Difference between revisions of "IS LOGICAL()"
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==Purpose== | ==Purpose== | ||
Function to check whether an expression is a logical | Function to check whether an expression is a logical | ||
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==Syntax== | ==Syntax== | ||
IS_LOGICAL(<exp>) | IS_LOGICAL(<exp>) | ||
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==See Also== | ==See Also== | ||
[[IS_ARRAY()]], [[IS_DATE()]], [[IS_FLOAT()]], [[IS_INT()]], [[IS_NUMERIC()]], [[IS_OBJECT()]], [[IS_STRING()]], [[ISALPHA()]], [[ISDIGIT()]], [[ISLOWER()]], [[ISUPPER()]], [[LOCAL]], [[PRIVATE]], [[PUBLIC]], [[RELEASE]], [[RESTORE]], [[SAVE]], [[TYPE()]] | [[IS_ARRAY()]], [[IS_DATE()]], [[IS_FLOAT()]], [[IS_INT()]], [[IS_NUMERIC()]], [[IS_OBJECT()]], [[IS_STRING()]], [[ISALPHA()]], [[ISDIGIT()]], [[ISLOWER()]], [[ISUPPER()]], [[LOCAL]], [[PRIVATE]], [[PUBLIC]], [[RELEASE]], [[RESTORE]], [[SAVE]], [[TYPE()]] | ||
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==Description== | ==Description== | ||
The IS_LOGICAL() function returns .T. (true) if the specified expression is a logical value, otherwise .F. (false). | The IS_LOGICAL() function returns .T. (true) if the specified expression is a logical value, otherwise .F. (false). | ||
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==Example== | ==Example== | ||
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.T. | .T. | ||
</code> | </code> | ||
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==Products== | ==Products== | ||
| − | + | Lianja, Lianja Server | |
[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
| − | [[Category: | + | [[Category:Formatting Functions]] |
| − | [[Category: | + | [[Category:Lianja VFP Extensions]] |
| + | [[Category:VFP Function Extensions]] | ||
Latest revision as of 08:12, 4 February 2013
Purpose
Function to check whether an expression is a logical
Syntax
IS_LOGICAL(<exp>)
See Also
IS_ARRAY(), IS_DATE(), IS_FLOAT(), IS_INT(), IS_NUMERIC(), IS_OBJECT(), IS_STRING(), ISALPHA(), ISDIGIT(), ISLOWER(), ISUPPER(), LOCAL, PRIVATE, PUBLIC, RELEASE, RESTORE, SAVE, TYPE()
Description
The IS_LOGICAL() function returns .T. (true) if the specified expression is a logical value, otherwise .F. (false).
Example
> ? is_logical(.T.) .T. > ? is_logical(True) .T. > ? is_logical(False) .T. > ? is_logical(2 = 1 + 1) .T.
Products
Lianja, Lianja Server
