if

1.85

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Description

Description:

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.

• 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}.

Groups:

Uncategorised

Syntax

Syntax:

• Anything = if (condition) then {Code} else {Code}
• Anything = if (condition) [ {ThenCode} , {ElseCode} ]
• ? (condition) : {Code}

Parameters:

condition: statement that returns a Boolean

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

Return Value:

Anything- Dependent on {Code} executed

Examples

Example 1:

if (a>b) then {c=0} else {c=1}

Additional Information

See also:

elseControl Structuresthen

Notes

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Notes

Posted on August 4, 2006 - 10:55

hardrock

Notes from before the conversion: Standard syntax: = if a then b Alternative syntax = ? a : 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.