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Indexers are implemented through the get and set accessors for the operator [].They are similar to properties, but differ by not being static, and the fact that indexers' accessors take parameters.
let «rec» foo parameters = instructions... return_value: F# [<EntryPoint>] let main args = instructions: Standard ML: fun foo parameters = ( instructions) fun foo parameters = ( instructions... return_value) Haskell: foo parameters = do Tab ↹instructions: foo parameters = return_value or foo parameters = do Tab ↹instructions Tab ↹return ...
Comparison of programming languages; General comparison; Assignment; Basic syntax; Basic instructions; Comments; Control flow Foreach loops; While loops; For loops
String functions are used in computer programming languages to manipulate a string or query information about a string (some do both). Most programming languages that have a string datatype will have some string functions although there may be other low-level ways within each language to handle strings directly. In object-oriented languages ...
In C and C++, return exp; (where exp is an expression) is a statement that tells a function to return execution of the program to the calling function, and report the value of exp. If a function has the return type void, the return statement can be used without a value, in which case the program just breaks out of the current function and ...
In computer programming, the return type (or result type) defines and constrains the data type of the value returned from a subroutine or method. [1] In many programming languages (especially statically-typed programming languages such as C, C++, Java) the return type must be explicitly specified when declaring a function.
In Python, there is a type called NoneType which allows the single value of None. In Python's optional static type annotations, this type is represented as None. [1] In Swift, the unit type is called Void or and its only value is also (), reflecting the 0-tuple interpretation. In Java, the unit type is called Void and its only value is null.
The hash function in Java, used by HashMap and HashSet, is provided by the Object.hashCode() method. Since every class in Java inherits from Object, every object has a hash function. A class can override the default implementation of hashCode() to provide a custom hash function more in accordance with the properties of the object.