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  2. Immutable object - Wikipedia

    en.wikipedia.org/wiki/Immutable_object

    Both Java and the .NET Framework have mutable versions of string. In Java [5]: 84 these are StringBuffer and StringBuilder (mutable versions of Java String) and in .NET this is StringBuilder (mutable version of .Net String). Python 3 has a mutable string (bytes) variant, named bytearray. [6]

  3. String (computer science) - Wikipedia

    en.wikipedia.org/wiki/String_(computer_science)

    Some of these languages with immutable strings also provide another type that is mutable, such as Java and .NET's StringBuilder, the thread-safe Java StringBuffer, and the Cocoa NSMutableString. There are both advantages and disadvantages to immutability: although immutable strings may require inefficiently creating many copies, they are ...

  4. StringBuffer - Wikipedia

    en.wikipedia.org/?title=StringBuffer&redirect=no

    Pages for logged out editors learn more. Contributions; Talk; StringBuffer

  5. Pointer (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Pointer_(computer_programming)

    Some built-in types, like maps and channels, are boxed (i.e. internally they are pointers to mutable structures), and are initialized using the make function. In an approach to unified syntax between pointers and non-pointers, the arrow ( -> ) operator has been dropped: the dot operator on a pointer refers to the field or method of the ...

  6. Pure function - Wikipedia

    en.wikipedia.org/wiki/Pure_function

    I/O is inherently impure: input operations undermine referential transparency, and output operations create side effects.Nevertheless, there is a sense in which a function can perform input or output and still be pure, if the sequence of operations on the relevant I/O devices is modeled explicitly as both an argument and a result, and I/O operations are taken to fail when the input sequence ...

  7. final (Java) - Wikipedia

    en.wikipedia.org/wiki/Final_(Java)

    Note: If the variable is a reference, this means that the variable cannot be re-bound to reference another object. But the object that it references is still mutable, if it was originally mutable.) Unlike the value of a constant, the value of a final variable is not necessarily known at compile time. It is considered good practice to represent ...

  8. Set (abstract data type) - Wikipedia

    en.wikipedia.org/wiki/Set_(abstract_data_type)

    Other variants, called dynamic or mutable sets, allow also the insertion and deletion of elements from the set. A multiset is a special kind of set in which an element can appear multiple times in the set.

  9. Functional programming - Wikipedia

    en.wikipedia.org/wiki/Functional_programming

    When a pure function is called with some given arguments, it will always return the same result, and cannot be affected by any mutable state or other side effects. This is in contrast with impure procedures, common in imperative programming, which can have side effects (such as modifying the program's state or taking input from a user).