if: Difference between revisions

Revision as of 21:48, 29 September 2007

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Description:

The standard if, then, else constuct available in many languages. This syntax however has alternate forms in the manner of an Array.

Result of the Code executed is returned as the result to this command (which may be Nothing}.

Groups:

Uncategorised

Syntax:

Parameters:

condition: statement that returns a Boolean

Code: statement(s) executed when condition true, or false

Return Value:

Anything- Dependent on Code executed

Example 1:: _retVal = if (1 > 0) then {"It's true"} else {"It's false"}; hint str _retVal

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Only post proven facts here! Add Note

Posted on August 4, 2006 - 10:55
hardrock: Notes from before the conversion: Standard syntax: = if a then b Compound clause syntax (multiple actions) "if a then x, y, z" or "if a then x; y; z"
Ceeeb: Any variables you declare within the body of an if/then statement (ie between the curly braces) are local to that 'if' statement, and are destroyed at the end of the statement. If you know you want to use the variable outside the 'if' statement, make sure your declare it before the 'if' statement.

@@ Line 7: / Line 7: @@
 ____________________________________________________________________________________________
-| The standard if, then, else constuct available in many languages. This syntax however has alternate forms in the manner of an [[Array]], or, as a which (?) operator.
+| The standard if, then, else constuct available in many languages. This syntax however has alternate forms in the manner of an [[Array]].
 *if (condition) then {code} else {code}
 *if (condition) then [ {code},{code} ]
-*? (condition) : code (no else alternative for the which syntax)
 Result of the [[Code]] executed is returned as the result to this command (which may be [[Nothing]]}.|= Description
@@ Line 18: / Line 17: @@
 *[[Anything]] <nowiki>=</nowiki> '''if''' (condition) '''then''' {[[Code]]} '''else''' {[[Code]]}
 *[[Anything]] <nowiki>=</nowiki> '''if''' (condition)  [ {ThenCode} , {ElseCode} ]
-*'''?''' (condition) : [[Code]]|= Syntax
+|= Syntax
 |p1= condition: statement that returns a [[Boolean]] |= Parameter 1
@@ Line 44: / Line 43: @@
   <nowiki>=</nowiki> if a [[then]] b
-Alternative syntax
- <nowiki>= ? a : b </nowiki>
 Compound clause syntax (multiple actions)