Recent questions tagged immutability

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immutability - Circular references with vals in Kotlin

In Kotlin, say I have data class A (val f: B) and data class B (val f: A). I want to initialize local var a: A and ... f == b and b.f == a ?? } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - Complete List of immutable JDK classes?

is there a list of de-facto immutable classes in the jdk? technically Immutable classes include the obvious ... immutability in its javadoc.. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - Is there any way to prevent replacement of JavaScript object properties?

I would like to make an object's structure immutable, preventing its properties from being subsequently replaced. The ... return "c"; }; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - Is using a StringBuilder a right thing to do in F#?

StringBuiler is a mutable object, F# encourages employing immutability as much as possible. So one should use ... as efficient? A snippet See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - R: selecting subset without copying

Is there a way to select a subset from objects (data frames, matrices, vectors) without making a copy of ... that do not create subsets. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - How to initialize and "modify" a cyclic persistent data structure in Scala?

I have searched and found some info on this topic but the answers are either confusing or not applicable ... multimap persistent data structure? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - How do I create and initialize an immutable array?

I want to create an array. I don't need the array to be mutable, and at the time of creation, I have all ... ; How can I achieve that in Rust? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - How can I force a struct's field to always be immutable in Rust?

In Rust, you don't specify mutability inside a struct, but it is inherited from the variable binding. That ... advantage of this immutability... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - JavaScript const Keyword

Does the const keyword in JavaScript create an immutable reference to immutable data structures? [I'm assuming that ... ://jsfiddle.net/hVJ2a/ See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - Java, Making a class Immutable

I came across this exercise online where I have two classes and I'm supposed to make the Tutor class immutable. However ... ) { return name; } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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315 views

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immutability - Why it's impossible to override `var` with `def` in Scala?

While I understand why a var cannot override a val in subclass and vice versa, I am unable to understand why ... help me in understanding this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - PHP: immutable public member fields

I need to create an immutable class which is simply a member field container. I want its fields to be instantiated ... How is it done in PHP? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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immutability - Why are integers immutable in Python?

I understand the differences between mutable and immutable objects in Python. I have read many posts discussing the ... ? Primitive vs derived? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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341 views

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immutability - Are Elixir variables really immutable?

In Dave Thomas's book Programming Elixir he states "Elixir enforces immutable data" and goes on to say: ... would be really helpful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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