Difference between revisions of "DO CASE"
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==Purpose== | ==Purpose== | ||
Multiple choice selection command | Multiple choice selection command | ||
| − | |||
==Syntax== | ==Syntax== | ||
| Line 19: | Line 18: | ||
ENDCASE | ENDCASE | ||
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==See Also== | ==See Also== | ||
| − | + | [[DO WHILE]], [[ICASE()]], [[IF]], [[IF()]], [[IIF()]] | |
| − | + | ||
==Description== | ==Description== | ||
| − | The DO CASE command selects one course of action out of many alternatives. | + | The DO CASE command selects one course of action out of many alternatives. Lianja evaluates each CASE <condition> in turn. As soon as one of the conditions evaluates to true (.T.) the <commands> for that CASE are executed and any further case statements are ignored. Following execution of the <commands>, the program continues after the ENDCASE statement. |
====OTHERWISE==== | ====OTHERWISE==== | ||
| Line 34: | Line 31: | ||
If no CASE <condition> is .T., and there is no OTHERWISE statement specified, then control skips to the next command following the ENDCASE. | If no CASE <condition> is .T., and there is no OTHERWISE statement specified, then control skips to the next command following the ENDCASE. | ||
| − | CASE statements, as with all of the other | + | CASE statements, as with all of the other Lianja statements can be nested. In other words, a CASE statement can contain further DO CASE commands. |
| − | + | ||
==Example== | ==Example== | ||
<code lang="recital"> | <code lang="recital"> | ||
| − | |||
do case | do case | ||
| − | case | + | case mColor = "red" |
| − | + | // do something | |
| − | case | + | case mColor = "blue" |
| − | + | // do something else | |
otherwise | otherwise | ||
| − | + | // any other mColor value | |
endcase | endcase | ||
</code> | </code> | ||
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| − | |||
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[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Commands]] | [[Category:Commands]] | ||
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[[Category:Looping Commands]] | [[Category:Looping Commands]] | ||
Latest revision as of 10:57, 4 February 2013
Purpose
Multiple choice selection command
Syntax
DO CASE
CASE <condition>
[<commands>]
[CASE <condition>
[<commands>]]
[OTHERWISE
[<commands>]]
ENDCASE
See Also
DO WHILE, ICASE(), IF, IF(), IIF()
Description
The DO CASE command selects one course of action out of many alternatives. Lianja evaluates each CASE <condition> in turn. As soon as one of the conditions evaluates to true (.T.) the <commands> for that CASE are executed and any further case statements are ignored. Following execution of the <commands>, the program continues after the ENDCASE statement.
OTHERWISE
If an OTHERWISE statement is present and no CASE <condition> evaluates to .T., the OTHERWISE <commands> are executed.
ENDCASE
If no CASE <condition> is .T., and there is no OTHERWISE statement specified, then control skips to the next command following the ENDCASE.
CASE statements, as with all of the other Lianja statements can be nested. In other words, a CASE statement can contain further DO CASE commands.
Example
do case case mColor = "red" // do something case mColor = "blue" // do something else otherwise // any other mColor value endcase
