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CLOJURE - DESTRUCTURING IN CLOJURE Clojure destructuring is broken up into two categories, sequential destructuring and associative destructuring. Sequential destructuring represents a sequential data structure as a Clojure vector within a let binding. This type of destructuring can be used on any kind of data structure that can be traversed in linear time, including lists CLOJURE - CHEATSHEET Cheatsheet Clojure 1.10 Cheat Sheet (v49) Download PDF version / Source repo. Many thanks to Steve Tayon for creating it and Andy Fingerhut for ongoing maintenance. CLOJURE - STATE OF CLOJURE 2020 RESULTS State of Clojure 2020 Results. 20 February 2020. Alex Miller. Ten years ago, Chas Emerick ran the first State of Clojure survey. In 2010, most users had been using Clojure for just weeks or months, and few were using it as a language for serious work. This year, we see consistent and growing use for work, steady interest in the key value CLOJURE - THE REPL AND MAIN ENTRY POINTS The simplest way to launch a Clojure repl is to use the clj command tool, which invokes clojure.main: $ clj Clojure 1.10.0 user=>. The REPL prompt shows the name of the current namespace (*ns*), which defaults to user. Several special vars are available when using theREPL:
CLOJURE - SPEC GUIDE The spec library ( API docs) specifies the structure of data, validates or conforms it, and can generate data based on the spec. To use spec, declare a dependency on Clojure 1.9.0 or higher: To start working with spec, require the clojure.spec.alpha namespace at the REPL: Or include spec in your namespace:CLOJURE - METADATA
Symbols and collections support metadata, a map of data about the symbol or collection. The metadata system allows for arbitrary annotation of data. It is used to convey information to the compiler about types, but can also be used by application developers for CLOJUREOVERVIEWREFERENCEAPIRELEASESGUIDESCOMMUNITY Clojure is designed to be a hosted language, sharing the JVM type system, GC, threads etc. All functions are compiled to JVM bytecode. Clojure is a great Java library consumer, offering the dot-target-member notation for calls to Java. Clojure supports the dynamic implementation of Java interfaces and classes. CLOJURE - GETTING STARTED Installation on Mac via Homebrew. Install the command line tools with brew from the clojure/tools tap: brew install clojure/tools/clojure. If you’ve already installed this way in the past, you can upgrade to the latest release with: brew upgrade clojure/tools/clojure. CLOJURE - CLOJURE CLR Clojure CLR. This project is a native implementation of Clojure on the Common Language Runtime (CLR), the execution engine of Microsoft’s .Net Framework. ClojureCLR is programmed in C# (and Clojure itself) and makes use of Microsoft’s Dynamic Language Runtime (DLR). CLOJURE - STATE OF CLOJURE 2021 RESULTS State of Clojure 2021 Results. 06 April 2021. Fogus. While a challenging year overall, 2020 was another good year for Clojure and its ecosystem. One big newsworthy item was that Cognitect joined Nubank, the world’s largest independent digital bank, to reinvent financial services across Latin America. The news was well received,and the
CLOJURE - DESTRUCTURING IN CLOJURE Clojure destructuring is broken up into two categories, sequential destructuring and associative destructuring. Sequential destructuring represents a sequential data structure as a Clojure vector within a let binding. This type of destructuring can be used on any kind of data structure that can be traversed in linear time, including lists CLOJURE - CHEATSHEET Cheatsheet Clojure 1.10 Cheat Sheet (v49) Download PDF version / Source repo. Many thanks to Steve Tayon for creating it and Andy Fingerhut for ongoing maintenance. CLOJURE - STATE OF CLOJURE 2020 RESULTS State of Clojure 2020 Results. 20 February 2020. Alex Miller. Ten years ago, Chas Emerick ran the first State of Clojure survey. In 2010, most users had been using Clojure for just weeks or months, and few were using it as a language for serious work. This year, we see consistent and growing use for work, steady interest in the key value CLOJURE - THE REPL AND MAIN ENTRY POINTS The simplest way to launch a Clojure repl is to use the clj command tool, which invokes clojure.main: $ clj Clojure 1.10.0 user=>. The REPL prompt shows the name of the current namespace (*ns*), which defaults to user. Several special vars are available when using theREPL:
CLOJURE - SPEC GUIDE The spec library ( API docs) specifies the structure of data, validates or conforms it, and can generate data based on the spec. To use spec, declare a dependency on Clojure 1.9.0 or higher: To start working with spec, require the clojure.spec.alpha namespace at the REPL: Or include spec in your namespace:CLOJURE - METADATA
Symbols and collections support metadata, a map of data about the symbol or collection. The metadata system allows for arbitrary annotation of data. It is used to convey information to the compiler about types, but can also be used by application developers for CLOJURE - STATE OF CLOJURE 2020 RESULTS State of Clojure 2020 Results. 20 February 2020. Alex Miller. Ten years ago, Chas Emerick ran the first State of Clojure survey. In 2010, most users had been using Clojure for just weeks or months, and few were using it as a language for serious work. This year, we see consistent and growing use for work, steady interest in the key value CLOJURE - REFS AND TRANSACTIONS Clojure transactions should be easy to understand if you’ve ever used database transactions - they ensure that all actions on Refs are atomic, consistent, and isolated. Atomic means that every change to Refs made within a transaction occurs or none do. Consistent means that each new value can be checked with a validator function beforeCLOJURE - EQUALITY
Clojure’s = is true when comparing immutable values that represent the same value, or when comparing mutable objects that are the identical object. As a convenience, = also returns true when used to compare Java collections against each other, or against Clojure’s immutable collections, if their contents are equal. However, there are important caveats if you use non-Clojure collections. CLOJURE - DATATYPES: DEFTYPE, DEFRECORD AND REIFY The datatype features - deftype, defrecord and reify, provide the mechanism for defining implementations of abstractions, and in the case of reify, instances of those implementations.The abstractions themselves are defined by either protocols or interfaces. A datatype provides a host type, (named in the case of deftype and defrecord, anonymous in the case of reify), with some structure CLOJURE - VARS AND THE GLOBAL ENVIRONMENT Clojure is a practical language that recognizes the occasional need to maintain a persistent reference to a changing value and provides 4 distinct mechanisms for doing so in a controlled manner - Vars, Refs, Agents and Atoms.Vars provide a mechanism to refer to a mutable storage location that can be dynamically rebound (to a new storage location) on a per-thread basis. CLOJURE - AGENTS AND ASYNCHRONOUS ACTIONS Clojure’s Agents are reactive, not autonomous - there is no imperative message loop and no blocking receive.The state of an Agent should be itself immutable (preferably an instance of one of Clojure’s persistent collections), and the state of an Agent is always immediately available for reading by any thread (using the deref function or reader macro @) without any messages, i.e CLOJURE - AHEAD-OF-TIME COMPILATION AND CLASS GENERATION Clojure compiles all code you load on-the-fly into JVM bytecode, but sometimes it is advantageous to compile ahead-of-time (AOT). Some reasons to use AOT compilation are: To deliver your application without source. To speed up application startup. To generate named classes for use by Java. CLOJURE - CLOJURESCRIPT ClojureScript. ClojureScript is a compiler for Clojure that targets JavaScript. It is designed to emit JavaScript code which is compatible with the advanced compilation mode of the Google Closure optimizingcompiler.
CLOJURE - GO BLOCK BEST PRACTICES General advice. It’s very tempting to do the following to send a message without waiting for a reply: (go (>! c 42)) Although go blocks are cheap, they aren’t completely free. Thus it’s recommended to use. (async/put! c 42) go just ends up calling put! eventually anyway, so there really isn’t a downside. Also, if the code is beingCLOJURE - METADATA
Symbols and collections support metadata, a map of data about the symbol or collection. The metadata system allows for arbitrary annotation of data. It is used to convey information to the compiler about types, but can also be used by application developers for CLOJUREOVERVIEWREFERENCEAPIRELEASESGUIDESCOMMUNITY Clojure is designed to be a hosted language, sharing the JVM type system, GC, threads etc. All functions are compiled to JVM bytecode. Clojure is a great Java library consumer, offering the dot-target-member notation for calls to Java. Clojure supports the dynamic implementation of Java interfaces and classes. CLOJURE - GETTING STARTED Installation on Mac via Homebrew. Install the command line tools with brew from the clojure/tools tap: brew install clojure/tools/clojure. If you’ve already installed this way in the past, you can upgrade to the latest release with: brew upgrade clojure/tools/clojure. CLOJURE - CLOJURE CLR Clojure CLR. This project is a native implementation of Clojure on the Common Language Runtime (CLR), the execution engine of Microsoft’s .Net Framework. ClojureCLR is programmed in C# (and Clojure itself) and makes use of Microsoft’s Dynamic Language Runtime (DLR). CLOJURE - STATE OF CLOJURE 2021 RESULTS State of Clojure 2021 Results. 06 April 2021. Fogus. While a challenging year overall, 2020 was another good year for Clojure and its ecosystem. One big newsworthy item was that Cognitect joined Nubank, the world’s largest independent digital bank, to reinvent financial services across Latin America. The news was well received,and the
CLOJURE - DESTRUCTURING IN CLOJURE Clojure destructuring is broken up into two categories, sequential destructuring and associative destructuring. Sequential destructuring represents a sequential data structure as a Clojure vector within a let binding. This type of destructuring can be used on any kind of data structure that can be traversed in linear time, including lists CLOJURE - REFS AND TRANSACTIONS Clojure transactions should be easy to understand if you’ve ever used database transactions - they ensure that all actions on Refs are atomic, consistent, and isolated. Atomic means that every change to Refs made within a transaction occurs or none do. Consistent means that each new value can be checked with a validator function before CLOJURE - CHEATSHEET Cheatsheet Clojure 1.10 Cheat Sheet (v49) Download PDF version / Source repo. Many thanks to Steve Tayon for creating it and Andy Fingerhut for ongoing maintenance. CLOJURE - STATE OF CLOJURE 2020 RESULTS State of Clojure 2020 Results. 20 February 2020. Alex Miller. Ten years ago, Chas Emerick ran the first State of Clojure survey. In 2010, most users had been using Clojure for just weeks or months, and few were using it as a language for serious work. This year, we see consistent and growing use for work, steady interest in the key value CLOJURE - THE REPL AND MAIN ENTRY POINTS The simplest way to launch a Clojure repl is to use the clj command tool, which invokes clojure.main: $ clj Clojure 1.10.0 user=>. The REPL prompt shows the name of the current namespace (*ns*), which defaults to user. Several special vars are available when using theREPL:
CLOJURE - METADATA
Symbols and collections support metadata, a map of data about the symbol or collection. The metadata system allows for arbitrary annotation of data. It is used to convey information to the compiler about types, but can also be used by application developers for CLOJUREOVERVIEWREFERENCEAPIRELEASESGUIDESCOMMUNITY Clojure is designed to be a hosted language, sharing the JVM type system, GC, threads etc. All functions are compiled to JVM bytecode. Clojure is a great Java library consumer, offering the dot-target-member notation for calls to Java. Clojure supports the dynamic implementation of Java interfaces and classes. CLOJURE - GETTING STARTED Installation on Mac via Homebrew. Install the command line tools with brew from the clojure/tools tap: brew install clojure/tools/clojure. If you’ve already installed this way in the past, you can upgrade to the latest release with: brew upgrade clojure/tools/clojure. CLOJURE - CLOJURE CLR Clojure CLR. This project is a native implementation of Clojure on the Common Language Runtime (CLR), the execution engine of Microsoft’s .Net Framework. ClojureCLR is programmed in C# (and Clojure itself) and makes use of Microsoft’s Dynamic Language Runtime (DLR). CLOJURE - STATE OF CLOJURE 2021 RESULTS State of Clojure 2021 Results. 06 April 2021. Fogus. While a challenging year overall, 2020 was another good year for Clojure and its ecosystem. One big newsworthy item was that Cognitect joined Nubank, the world’s largest independent digital bank, to reinvent financial services across Latin America. The news was well received,and the
CLOJURE - DESTRUCTURING IN CLOJURE Clojure destructuring is broken up into two categories, sequential destructuring and associative destructuring. Sequential destructuring represents a sequential data structure as a Clojure vector within a let binding. This type of destructuring can be used on any kind of data structure that can be traversed in linear time, including lists CLOJURE - REFS AND TRANSACTIONS Clojure transactions should be easy to understand if you’ve ever used database transactions - they ensure that all actions on Refs are atomic, consistent, and isolated. Atomic means that every change to Refs made within a transaction occurs or none do. Consistent means that each new value can be checked with a validator function before CLOJURE - CHEATSHEET Cheatsheet Clojure 1.10 Cheat Sheet (v49) Download PDF version / Source repo. Many thanks to Steve Tayon for creating it and Andy Fingerhut for ongoing maintenance. CLOJURE - STATE OF CLOJURE 2020 RESULTS State of Clojure 2020 Results. 20 February 2020. Alex Miller. Ten years ago, Chas Emerick ran the first State of Clojure survey. In 2010, most users had been using Clojure for just weeks or months, and few were using it as a language for serious work. This year, we see consistent and growing use for work, steady interest in the key value CLOJURE - THE REPL AND MAIN ENTRY POINTS The simplest way to launch a Clojure repl is to use the clj command tool, which invokes clojure.main: $ clj Clojure 1.10.0 user=>. The REPL prompt shows the name of the current namespace (*ns*), which defaults to user. Several special vars are available when using theREPL:
CLOJURE - METADATA
Symbols and collections support metadata, a map of data about the symbol or collection. The metadata system allows for arbitrary annotation of data. It is used to convey information to the compiler about types, but can also be used by application developers for CLOJURE - STATE OF CLOJURE 2020 RESULTS State of Clojure 2020 Results. 20 February 2020. Alex Miller. Ten years ago, Chas Emerick ran the first State of Clojure survey. In 2010, most users had been using Clojure for just weeks or months, and few were using it as a language for serious work. This year, we see consistent and growing use for work, steady interest in the key value CLOJURE - REFS AND TRANSACTIONS Clojure transactions should be easy to understand if you’ve ever used database transactions - they ensure that all actions on Refs are atomic, consistent, and isolated. Atomic means that every change to Refs made within a transaction occurs or none do. Consistent means that each new value can be checked with a validator function before CLOJURE - DATATYPES: DEFTYPE, DEFRECORD AND REIFY The datatype features - deftype, defrecord and reify, provide the mechanism for defining implementations of abstractions, and in the case of reify, instances of those implementations.The abstractions themselves are defined by either protocols or interfaces. A datatype provides a host type, (named in the case of deftype and defrecord, anonymous in the case of reify), with some structureCLOJURE - EQUALITY
Clojure’s = is true when comparing immutable values that represent the same value, or when comparing mutable objects that are the identical object. As a convenience, = also returns true when used to compare Java collections against each other, or against Clojure’s immutable collections, if their contents are equal. However, there are important caveats if you use non-Clojure collections. CLOJURE - VARS AND THE GLOBAL ENVIRONMENT Clojure is a practical language that recognizes the occasional need to maintain a persistent reference to a changing value and provides 4 distinct mechanisms for doing so in a controlled manner - Vars, Refs, Agents and Atoms.Vars provide a mechanism to refer to a mutable storage location that can be dynamically rebound (to a new storage location) on a per-thread basis. CLOJURE - AGENTS AND ASYNCHRONOUS ACTIONS Clojure’s Agents are reactive, not autonomous - there is no imperative message loop and no blocking receive.The state of an Agent should be itself immutable (preferably an instance of one of Clojure’s persistent collections), and the state of an Agent is always immediately available for reading by any thread (using the deref function or reader macro @) without any messages, i.e CLOJURE - AHEAD-OF-TIME COMPILATION AND CLASS GENERATION Clojure compiles all code you load on-the-fly into JVM bytecode, but sometimes it is advantageous to compile ahead-of-time (AOT). Some reasons to use AOT compilation are: To deliver your application without source. To speed up application startup. To generate named classes for use by Java. CLOJURE - CLOJURESCRIPT ClojureScript. ClojureScript is a compiler for Clojure that targets JavaScript. It is designed to emit JavaScript code which is compatible with the advanced compilation mode of the Google Closure optimizingcompiler.
CLOJURE - GO BLOCK BEST PRACTICES General advice. It’s very tempting to do the following to send a message without waiting for a reply: (go (>! c 42)) Although go blocks are cheap, they aren’t completely free. Thus it’s recommended to use. (async/put! c 42) go just ends up calling put! eventually anyway, so there really isn’t a downside. Also, if the code is beingCLOJURE - METADATA
Symbols and collections support metadata, a map of data about the symbol or collection. The metadata system allows for arbitrary annotation of data. It is used to convey information to the compiler about types, but can also be used by application developers for CLOJUREOVERVIEWREFERENCEAPIRELEASESGUIDESCOMMUNITY Clojure is designed to be a hosted language, sharing the JVM type system, GC, threads etc. All functions are compiled to JVM bytecode. Clojure is a great Java library consumer, offering the dot-target-member notation for calls to Java. Clojure supports the dynamic implementation of Java interfaces and classes. CLOJURE - GETTING STARTED Installation on Mac via Homebrew. Install the command line tools with brew from the clojure/tools tap: brew install clojure/tools/clojure. If you’ve already installed this way in the past, you can upgrade to the latest release with: brew upgrade clojure/tools/clojure. CLOJURE - CLOJURE CLR Clojure CLR. This project is a native implementation of Clojure on the Common Language Runtime (CLR), the execution engine of Microsoft’s .Net Framework. ClojureCLR is programmed in C# (and Clojure itself) and makes use of Microsoft’s Dynamic Language Runtime (DLR). CLOJURE - REFS AND TRANSACTIONS Clojure transactions should be easy to understand if you’ve ever used database transactions - they ensure that all actions on Refs are atomic, consistent, and isolated. Atomic means that every change to Refs made within a transaction occurs or none do. Consistent means that each new value can be checked with a validator function before CLOJURE - STATE OF CLOJURE 2021 RESULTS State of Clojure 2021 Results. 06 April 2021. Fogus. While a challenging year overall, 2020 was another good year for Clojure and its ecosystem. One big newsworthy item was that Cognitect joined Nubank, the world’s largest independent digital bank, to reinvent financial services across Latin America. The news was well received,and the
CLOJURE - DESTRUCTURING IN CLOJURE Clojure destructuring is broken up into two categories, sequential destructuring and associative destructuring. Sequential destructuring represents a sequential data structure as a Clojure vector within a let binding. This type of destructuring can be used on any kind of data structure that can be traversed in linear time, including lists CLOJURE - STATE OF CLOJURE 2020 RESULTS State of Clojure 2020 Results. 20 February 2020. Alex Miller. Ten years ago, Chas Emerick ran the first State of Clojure survey. In 2010, most users had been using Clojure for just weeks or months, and few were using it as a language for serious work. This year, we see consistent and growing use for work, steady interest in the key value CLOJURE - AGENTS AND ASYNCHRONOUS ACTIONS Clojure’s Agents are reactive, not autonomous - there is no imperative message loop and no blocking receive.The state of an Agent should be itself immutable (preferably an instance of one of Clojure’s persistent collections), and the state of an Agent is always immediately available for reading by any thread (using the deref function or reader macro @) without any messages, i.e CLOJURE - THE REPL AND MAIN ENTRY POINTS The simplest way to launch a Clojure repl is to use the clj command tool, which invokes clojure.main: $ clj Clojure 1.10.0 user=>. The REPL prompt shows the name of the current namespace (*ns*), which defaults to user. Several special vars are available when using theREPL:
CLOJURE - CHEATSHEET Cheatsheet Clojure 1.10 Cheat Sheet (v49) Download PDF version / Source repo. Many thanks to Steve Tayon for creating it and Andy Fingerhut for ongoing maintenance. CLOJUREOVERVIEWREFERENCEAPIRELEASESGUIDESCOMMUNITY Clojure is designed to be a hosted language, sharing the JVM type system, GC, threads etc. All functions are compiled to JVM bytecode. Clojure is a great Java library consumer, offering the dot-target-member notation for calls to Java. Clojure supports the dynamic implementation of Java interfaces and classes. CLOJURE - GETTING STARTED Installation on Mac via Homebrew. Install the command line tools with brew from the clojure/tools tap: brew install clojure/tools/clojure. If you’ve already installed this way in the past, you can upgrade to the latest release with: brew upgrade clojure/tools/clojure. CLOJURE - CLOJURE CLR Clojure CLR. This project is a native implementation of Clojure on the Common Language Runtime (CLR), the execution engine of Microsoft’s .Net Framework. ClojureCLR is programmed in C# (and Clojure itself) and makes use of Microsoft’s Dynamic Language Runtime (DLR). CLOJURE - REFS AND TRANSACTIONS Clojure transactions should be easy to understand if you’ve ever used database transactions - they ensure that all actions on Refs are atomic, consistent, and isolated. Atomic means that every change to Refs made within a transaction occurs or none do. Consistent means that each new value can be checked with a validator function before CLOJURE - STATE OF CLOJURE 2021 RESULTS State of Clojure 2021 Results. 06 April 2021. Fogus. While a challenging year overall, 2020 was another good year for Clojure and its ecosystem. One big newsworthy item was that Cognitect joined Nubank, the world’s largest independent digital bank, to reinvent financial services across Latin America. The news was well received,and the
CLOJURE - DESTRUCTURING IN CLOJURE Clojure destructuring is broken up into two categories, sequential destructuring and associative destructuring. Sequential destructuring represents a sequential data structure as a Clojure vector within a let binding. This type of destructuring can be used on any kind of data structure that can be traversed in linear time, including lists CLOJURE - STATE OF CLOJURE 2020 RESULTS State of Clojure 2020 Results. 20 February 2020. Alex Miller. Ten years ago, Chas Emerick ran the first State of Clojure survey. In 2010, most users had been using Clojure for just weeks or months, and few were using it as a language for serious work. This year, we see consistent and growing use for work, steady interest in the key value CLOJURE - AGENTS AND ASYNCHRONOUS ACTIONS Clojure’s Agents are reactive, not autonomous - there is no imperative message loop and no blocking receive.The state of an Agent should be itself immutable (preferably an instance of one of Clojure’s persistent collections), and the state of an Agent is always immediately available for reading by any thread (using the deref function or reader macro @) without any messages, i.e CLOJURE - THE REPL AND MAIN ENTRY POINTS The simplest way to launch a Clojure repl is to use the clj command tool, which invokes clojure.main: $ clj Clojure 1.10.0 user=>. The REPL prompt shows the name of the current namespace (*ns*), which defaults to user. Several special vars are available when using theREPL:
CLOJURE - CHEATSHEET Cheatsheet Clojure 1.10 Cheat Sheet (v49) Download PDF version / Source repo. Many thanks to Steve Tayon for creating it and Andy Fingerhut for ongoing maintenance. CLOJURE - CLOJURE DOWNLOADS Clojure Downloads. New to Clojure? Head to the Getting Started guide instead for information on how to install the Clojure tools! These tools allow you to start a REPL for interactive use, download Clojure libraries (including Clojure itself), and run Clojure programs. CLOJURE - STATE OF CLOJURE 2021 RESULTS State of Clojure 2021 Results. 06 April 2021. Fogus. While a challenging year overall, 2020 was another good year for Clojure and its ecosystem. One big newsworthy item was that Cognitect joined Nubank, the world’s largest independent digital bank, to reinvent financial services across Latin America. The news was well received,and the
CLOJURE - LEARN CLOJURE - FUNCTIONS Clojure is a functional language. Functions are first-class and can be passed-to or returned-from other functions. Most Clojure code consists primarily of pure functions (no side effects), so invoking with the same inputs yields the same output.CLOJURE - EQUALITY
Clojure’s = is true when comparing immutable values that represent the same value, or when comparing mutable objects that are the identical object. As a convenience, = also returns true when used to compare Java collections against each other, or against Clojure’s immutable collections, if their contents are equal. However, there are important caveats if you use non-Clojure collections. CLOJURE - CHEATSHEET Cheatsheet Clojure 1.10 Cheat Sheet (v49) Download PDF version / Source repo. Many thanks to Steve Tayon for creating it and Andy Fingerhut for ongoing maintenance. CLOJURE - CLOJURE DEREF (JUNE 4, 2021) Welcome to the Clojure Deref! This is a new periodic (thinking bi-weekly) link/news roundup for the Clojure ecosystem. We’ll be including links to Clojure articles, Clojure libraries, and when relevant, what’s happening in the Clojure core team. CLOJURE - AGENTS AND ASYNCHRONOUS ACTIONS Clojure’s Agents are reactive, not autonomous - there is no imperative message loop and no blocking receive.The state of an Agent should be itself immutable (preferably an instance of one of Clojure’s persistent collections), and the state of an Agent is always immediately available for reading by any thread (using the deref function or reader macro @) without any messages, i.eCLOJURE - WORKFLOW
JIRA status- these govern the default JIRA workflow and consist of Open, In progress, Reopened, Resolved, Closed. The Clojure workflow does not really distinguish between these much other than general open/closed differentiation. Approval- a custom field that is (mostly) how Screeners change the state of a ticket. None - new ticket. CLOJURE - COMPARATORS GUIDE In Clojure, you may also use boolean comparators that return true if the first argument should come before the second argument, or false otherwise (i.e. should come after, or it is equal). The function < is a perfect example, as long as you only need to compare numbers. > works for sorting numbers in decreasing order. CLOJURE - SPEC GUIDE The spec library ( API docs) specifies the structure of data, validates or conforms it, and can generate data based on the spec. To use spec, declare a dependency on Clojure 1.9.0 or higher: To start working with spec, require the clojure.spec.alpha namespace at the REPL: Or include spec in your namespace: Clojure Overview ReferenceAPI Releases
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Clojure is a robust, practical, and fast programming language with a set of useful features that together form a simple, coherent, andpowerful tool.
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THE CLOJURE PROGRAMMING LANGUAGE Clojure is a dynamic, general-purpose programming language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming. Clojure is a compiled language, yet remains completely dynamic – every feature supported by Clojure is supported at runtime. Clojure provides easy access to the Java frameworks, with optional type hints and type inference, to ensure that calls to Java can avoid reflection. Clojure is a dialect of Lisp, and shares with Lisp the code-as-data philosophy and a powerful macro system. Clojure is predominantly a functional programming language, and features a rich set of immutable, persistent data structures. When mutable state is needed, Clojure offers a software transactional memory system and reactive Agent system that ensure clean, correct, multithreaded designs. I hope you find Clojure's combination of facilities elegant, powerful, practical and fun to use.Rich Hickey
author of Clojure and CTO CognitectLEARN MORE
RATIONALE
A brief overview of Clojure and the features it includesGETTING STARTED
Resources for getting Clojure up and runningREFERENCE
Grand tour of all that Clojure has to offerGUIDES
Walkthroughs to help you learn along the wayCOMMUNITY
We have a vibrant, flourishing community. Join us! COMPANIES SUCCEEDING WITH CLOJURE > “Our Clojure system just handled its first Walmart black Friday > and came out without a scratch.” Anthony Marcar, Senior ArchitectWalmart Labs
> “Clojure is a functional programming language from top to bottom. > This means that code written in Clojure is very modular, composable, > reusable and easy to reason about.” Chris Price, Software EngineerPuppet Labs
> “We discussed the existing Clojure community, the maturity of the > language itself and the momentum we saw in the industry. Companies > are seeing speed to market deliveries ... based on Clojure.” Dave Elliman, Head of TechnologyThoughtWorks
Read more about Clojure success stories , how the community uses Clojure, and find companies using Clojure .FEATURES
Clojure has a set of useful features that together form a simple, coherent, and powerful tool.DYNAMIC DEVELOPMENT
Clojure is a dynamic environment you can interact with. Almost all of the language constructs are reified, and thus can be examined and changed. You can grow your program, with data loaded, adding features, fixing bugs, testing, in an unbroken stream. FUNCTIONAL PROGRAMMING Clojure provides the tools to avoid mutable state, provides functions as first-class objects, and emphasizes recursive iteration instead of side-effect based looping. Clojure is impure, yet stands behind the philosophy that programs that are more functional are more robust.LISP
Clojure is a member of the Lisp family of languages. Many of the features of Lisp have made it into other languages, but Lisp's approach to code-as-data and its macro system still set it apart. Additionally, Clojure’s maps, sets, and vectors are as first class in Clojure as lists are in Lisp. RUNTIME POLYMORPHISM Systems that utilize runtime polymorphism are easier to change and extend. Clojure offers simple, powerful and flexible mechanisms for runtime polymorphism. Clojure’s protocols and datatypes features add mechanisms for abstraction and data structure definition with no compromises vs the facilities of the host platform. CONCURRENT PROGRAMMING Clojure simplifies multi-threaded programming in several ways. Because the core data structures are immutable, they can be shared readily between threads. Clojure, being a practical language, allows state to change but provides mechanism to ensure that, when it does so, it remains consistent, while alleviating developers from having to avoid conflicts manually using locks etc.HOSTED ON THE JVM
Clojure is designed to be a hosted language, sharing the JVM type system, GC, threads etc. All functions are compiled to JVM bytecode. Clojure is a great Java library consumer, offering the dot-target-member notation for calls to Java. Clojure supports the dynamic implementation of Java interfaces and classes.NEWS
* 2020-02-28 Clojure Homebrew Tap * 2020-02-20 State of Clojure 2020 Results * 2020-01-07 State of Clojure 2020 Survey * 2019-07-25 Clojure Forum * 2019-06-06 Clojure 1.10.1 releaseUPCOMING EVENTS
* 2020-05-16 Dutch Clojure Day 2020 * 2020-06-25 Clojure/north 2020 * 2020-10-08 ClojuTRE 2020COGNITECT
Cognitect is a collection of experienced, thoughtful technologists, passionate about helping organizations deploy technology effectively and humanely to build better futures. In addition to working directly with companies to deliver innovative solutions, Cognitect offers architectural review, training and talent development services for companies and teams deploying Clojure andClojureScript.
Cognitect are also the makers of Datomic , a transactional database with a flexible data model, elastic scaling, and rich queries. Datomic Ionslet you develop
Clojure applications for AWS by deploying your code to a runningDatomic cluster.
> “We have created some of the sharpest tools in the business. We > believe this platform is a better way to develop software, and we > want you to have confidence using and deploying these tools. Open > source doesn't mean you're on your own any more.” –> cognitect.com
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