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immutability    
n. 不变,不变性

不变,不变性

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  • What is immutability and why should I worry about it?
    What is Immutability? Immutability is applied primarily to objects (strings, arrays, a custom Animal class) Typically, if there is an immutable version of a class, a mutable version is also available For instance, Objective-C and Cocoa define both an NSString class (immutable) and an NSMutableString class If an object is immutable, it can't be changed after it is created (basically read-only
  • java - What is meant by immutable? - Stack Overflow
    What exactly does immutable mean - that is, what are the consequences of an object being mutable or immutable? In particular, why are Java's Strings immutable? My understanding is that the StringBu
  • Pros. Cons. of Immutability vs. Mutability - Stack Overflow
    6 Immutability has, for example, benefits in muti-threaded programs As immutable objects cannot change their state after construction, you can safe share them across any number of concurrently running threads, without the risk of one interfering (by altering the state of an object visible to other threads) with another
  • Unable to delete Azure Storage Account With Versioning Enabled
    In all likelihood, a blob container in your storage account has version-level immutability enabled which is preventing that storage account from being deleted To delete the storage account, you would first need to find that container and disable the version level immutability (or simply delete the container)
  • How to make an immutable object in Python? - Stack Overflow
    Although I have never needed this, it just struck me that making an immutable object in Python could be slightly tricky You can't just override __setattr__, because then you can't even set attribu
  • Why are integers immutable in Python? - Stack Overflow
    I understand the differences between mutable and immutable objects in Python I have read many posts discussing the differences However, I have not read anything regarding WHY integers are immutable
  • oop - Mutable vs immutable objects - Stack Overflow
    Immutable Objects vs Immutable Collections One of the finer points in the debate over mutable vs immutable objects is the possibility of extending the concept of immutability to collections An immutable object is an object that often represents a single logical structure of data (for example an immutable string) When you have a reference to an immutable object, the contents of the object
  • Why is immutability so important (or needed) in JavaScript?
    281 I am currently working on React JS and React Native frameworks On the half way road I came across Immutability or the Immutable-JS library, when I was reading about Facebook's Flux and Redux implementation The question is, why is immutability so important? What is wrong in mutating objects? Doesn't it make things simple?
  • immutability - What does immutable and readonly mean in C#? - Stack . . .
    The first part is Immutability in C# Part One: Kinds of Immutability Very informative and helpful, as always The series describes what does it mean for a variable to be readonly, immutable etc in details Generally, readonly means only that you can't re-assign a field outside the constructor





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