Difference between revisions of "While"

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{{command header|Flow Control}}
 
{{command header|Flow Control}}
{{body|while ( expression ) { }|While loops test the expression and if true, continuously executes the code provided until the expresion is no longer true. Unlike [[repeat..until]], while loops will not execute at all if the expression evaluates to false.}}
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{{body|while ( expression ) { }|While loops test the expression and if true, continuously executes the code provided until the expression is no longer true. Unlike [[repeat..until]], while loops will not execute at all if the expression evaluates to false.}}
  
 
==== Example ====
 
==== Example ====
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</pre>
 
</pre>
  
%Test holds the value of 10. Notice the condition "%Test < 10". If that becomes true, the script wont jump back to while loop start, but continues normally.
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%Test holds the value of 10. Notice the condition "%Test < 10". If that becomes true, the script won't jump back to the while loop start, but continues normally.
 
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{{1.5only}}
{{footer}}
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=See Also=
 +
{{Flow Control}}

Latest revision as of 17:59, 5 September 2007

Synopsis

while ( expression ) { }

Description

While loops test the expression and if true, continuously executes the code provided until the expression is no longer true. Unlike repeat..until, while loops will not execute at all if the expression evaluates to false.

Example

set %Test 1

while %Test < 10
{
;Code between these brackets, gets executed, while %Test is smaller than 10
;When its 10, it wont jump back to first bracket.
set %Test %Test + 1
}
display ok %Test $
halt

%Test holds the value of 10. Notice the condition "%Test < 10". If that becomes true, the script won't jump back to the while loop start, but continues normally.

Note: Only available in EasyUO 1.5+

See Also

Flow Control

  • Flow control commands allow scripts to make decisions based on the evaluation of boolean expressions.
break Jumps to first statement outside of loop
call Transfers execution to another script file
continue Jumps execution of a loop to next iteration
exit Exits a called script
for Creates a counting loop
gosub Transfers execution to the matching sub
goto Jumps to another part of the script given by a label
halt Stops the script
if Executes code based on the evaluation of an expression
pause Temporarily stops the execution of the current script
repeat..until Creates a loop that checks condition after execution
return Returns from a sub
stop Ends the script
while Creates a loop that checks condition before execution