By Letter: Non-alphabet | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
  Email this page to a friend


Argument




<programming> (Or "arg") A value or reference passed to a function, procedure, subroutine, command or program, by the caller.

For example, in the function

square(x) = x * x

x is the formal argument or "parameter" and in the call

y = square(3+3)

3+3 is the actual argument.

This will, in most cases, execute the function square with x having the value 6.

There are many different conventions for passing arguments to functions and procedures including call-by-value, call-by-name, call-by-need.

These affect whether the value of the argument is computed by the caller or the callee (the function) and whether the callee can modify the value of the argument as seen by the caller (if it is a variable).

Arguments to functions are usually, following mathematical notation, written in parentheses after the function name, separated by commas.

Arguments to a program are usually given after the command name, separated by spaces, e.g.:

cat myfile yourfile hisfile

Here "cat" is the command and "myfile", "yourfile", and "hisfile" are the arguments.

See also: curried function.



< Previous Terms Terms Containing argument Next Terms >
arena
ARES
AREV
AREXX
arg
ABC
abduction
actual argument
algebraic data type
alpha conversion
Argus
Ariel
ARI Service
ARITH-MATIC
Arithmetic and Logic Unit


Web Standards & Support:

Link to and support eLook.org Powered by LoadedWeb Web Hosting
Valid XHTML 1.0!Valid CSS!eLook.org FireFox Extensions