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Understanding Immutability in Elixir Programming
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Source: zachdaniel.dev
The article explores the concept of immutability in Elixir, contrasting it with mutable programming languages like JavaScript. It explains how immutability means that once a value is set in Elixir, it cannot be changed. The author highlights the distinction between mutation and observation, where in JavaScript, a variable can be mutated, while in Elixir, reassignment is simply rebinding a variable to a new value, effectively creating a new variable. The article also discusses the advantages of immutability, such as clearer and more predictable code, especially in concurrent programming scenarios where state consistency is crucial. It touches on how Elixir manages state through processes, ensuring that state mutations occur within a controlled, serialized environment, thus preventing race conditions. In conclusion, while Elixir has mutable state in certain definitions, it implements immutability at a higher level, offering safety and predictability in code execution.
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