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  2. Command-line argument parsing - Wikipedia

    en.wikipedia.org/wiki/Command-line_argument_parsing

    PHP uses argc as a count of arguments and argv as an array containing the values of the arguments. [ 4 ] [ 5 ] To create an array from command-line arguments in the -foo:bar format, the following might be used:

  3. Named parameter - Wikipedia

    en.wikipedia.org/wiki/Named_parameter

    OCaml resolves this ambiguity by requiring a positional argument after all optional named-parameter arguments: its presence or absence is used to decide if the function has been fully or partly applied. If all parameters are optional, the implementor may solve the issue by adding a dummy positional parameter of type unit.

  4. Parameter (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Parameter_(computer...

    When discussing code that is calling into a subroutine, any values or references passed into the subroutine are the arguments, and the place in the code where these values or references are given is the parameter list. When discussing the code inside the subroutine definition, the variables in the subroutine's parameter list are the parameters ...

  5. First-class function - Wikipedia

    en.wikipedia.org/wiki/First-class_function

    In computer science, a programming language is said to have first-class functions if it treats functions as first-class citizens.This means the language supports passing functions as arguments to other functions, returning them as the values from other functions, and assigning them to variables or storing them in data structures. [1]

  6. libffi - Wikipedia

    en.wikipedia.org/wiki/Libffi

    The JNI-free way to call native code from Java. gcj The runtime library for the GNU Compiler for the Java Programming Language uses libffi to handle calls back and forth between interpreted and natively compiled code. gcj was a part of the GCC, the GNU Compiler Collection.

  7. Augmented assignment - Wikipedia

    en.wikipedia.org/wiki/Augmented_assignment

    Augmented assignment (or compound assignment) is the name given to certain assignment operators in certain programming languages (especially those derived from C).An augmented assignment is generally used to replace a statement where an operator takes a variable as one of its arguments and then assigns the result back to the same variable.

  8. Command pattern - Wikipedia

    en.wikipedia.org/wiki/Command_pattern

    On the other hand, if the code is defined by the command object itself, the target object will be a different object entirely. Command Object, routed event arguments, event object: the object that is passed from the source to the Command/Action object, to the Target object to the code that does the work. Each button click or shortcut key ...

  9. Default argument - Wikipedia

    en.wikipedia.org/wiki/Default_Argument

    Python is a notable language that evaluates expressions in default arguments once, at the time the function declaration is evaluated. If evaluation per function call is desired, it can be replicated by having the default argument be a sentinel value , such as None , and then having the body of the function evaluate the default value's side ...