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Immutability does not imply that the object as stored in the computer's memory is unwriteable. Rather, immutability is a compile-time construct that indicates what a programmer can do through the normal interface of the object, not necessarily what they can absolutely do (for instance, by circumventing the type system or violating const ...
The object is not really immutable and hence not suitable for use in data structures relying on immutability like hash maps. And the object could be modified concurrently from the "mutable side". Some compiler optimizations available for immutable objects might not be available for mutable objects.
Clojure advocates immutability and immutable data structures and encourages programmers to be explicit about managing identity and its states. [23] This focus on programming with immutable values and explicit progression-of-time constructs is intended to facilitate developing more robust, especially concurrent, programs that are simple and fast.
It is mentioned by the documentation of Redux as being one of the possible libraries that can provide enforced immutability. [30] Mori.js brings data structures similar to those in Clojure to JavaScript. [32] Immer.js brings an interesting approach where one "creates the next immutable state by mutating the current one".
Clojure is a dialect of Lisp that targets mainly the Java virtual machine, and the Common Language Runtime (CLR), the Python VM, the Ruby VM YARV, and compiling to JavaScript. It is designed to be a pragmatic general-purpose language. Clojure draws considerable influences from Haskell and places a very strong emphasis on immutability. [54]
Here's a simple way to prepare your turkey like a pro before roasting: Tuck the wings to enhance the presentation while ensuring even cooking. Securing the wings behind and close to the body ...
"The market’s expectation seems to be that a rate hike at the January meeting is unlikely," said Shoki Omori, chief Japan desk strategist, Mizuho Securities, pointing to Ueda's remarks about the ...
Similarly, the idea of immutable data from functional programming is often included in imperative programming languages, [108] for example the tuple in Python, which is an immutable array, and Object.freeze() in JavaScript. [109]