while

Type

keyword

Summary

Used with the repeat control structure to specify that the loop is to repeat as long as the specified condition remains true.

Syntax

while

Description

Use the while keyword to repeat a sequence of instructions as long as a condition continues to be true.

LiveCode evaluates the condition each time the loop repeats, at the top of the loop (before the statements in the repeat structure are executed). If the condition is false, the loop is skipped and execution resumes with the statement after the end repeat statement.

If the condition is already false when LiveCode reaches the repeat statement, the loop is not executed at all.

Examples

repeat while the mouse is down

repeat while myVariable is empty

Related

control structure: repeat

glossary: keyword, resume, statement, loop, control structure, execute

keyword: forever, for, end repeat

Compatibility and Support

Introduced

LiveCode 1.0

OS

mac

windows

linux

ios

android

Platforms

desktop

server

mobile