Variables, Parameters, Arguments: Difference between revisions
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=Variable= | =Variable= | ||
Variables are names associated with memory locations that store values. In most programming languages, the values stored in memory have a formal [[Programming_Languages_Concepts#Type|type]] associated with them. Depending on the static or dynamic typing nature of the language, variables may or may not allow the modification their type throughout the execution of the program. Variables and [[#Identifier|identifiers]] are equivalent. | Variables are names associated with memory locations that store values. In most programming languages, the values stored in memory have a formal [[Programming_Languages_Concepts#Type|type]] associated with them. Depending on the static or dynamic typing nature of the language, variables may or may not allow the modification their type throughout the execution of the program. A useful mental representation of a variable is a sticky note that can be attached to an object, and then re-attached to a different object. Depending on the language, the second object may or may not be of the same type. Variables and [[#Identifier|identifiers]] are equivalent. | ||
Variables in various programming languages: | Variables in various programming languages: | ||
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* [[Go_Language#Variables|Go variables]] | * [[Go_Language#Variables|Go variables]] | ||
* [[Bash_Parameters_and_Variables#Parameters_and_Variables|Bash variables and parameters]] | * [[Bash_Parameters_and_Variables#Parameters_and_Variables|Bash variables and parameters]] | ||
=Identifier= | =Identifier= | ||
Revision as of 20:14, 17 August 2023
Internal
Variable
Variables are names associated with memory locations that store values. In most programming languages, the values stored in memory have a formal type associated with them. Depending on the static or dynamic typing nature of the language, variables may or may not allow the modification their type throughout the execution of the program. A useful mental representation of a variable is a sticky note that can be attached to an object, and then re-attached to a different object. Depending on the language, the second object may or may not be of the same type. Variables and identifiers are equivalent.
Variables in various programming languages:
Identifier
Parameter
Function parameters in various languages:
Argument
Function arguments in various languages:
Discussion
This terminology applies to Java method invocations, Python method invocations and even Java generics, where the ordinary parameters and variables are replaced with type parameters (type variables), and the arguments are replaced with type arguments.