Difference between revisions of "IS STRING()"
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==Purpose== | ==Purpose== | ||
Function to check whether an expression is a character string | Function to check whether an expression is a character string | ||
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==Syntax== | ==Syntax== | ||
IS_STRING(<exp>) | IS_STRING(<exp>) | ||
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==See Also== | ==See Also== | ||
[[IS_ARRAY()]], [[IS_FLOAT()]], [[IS_INT()]], [[IS_OBJECT()]], [[ISALPHA()]], [[ISDIGIT()]], [[ISLOWER()]], [[ISUPPER()]], [[LOCAL]], [[PRIVATE]], [[PUBLIC]], [[RELEASE]], [[RESTORE]], [[SAVE]], [[TYPE()]] | [[IS_ARRAY()]], [[IS_FLOAT()]], [[IS_INT()]], [[IS_OBJECT()]], [[ISALPHA()]], [[ISDIGIT()]], [[ISLOWER()]], [[ISUPPER()]], [[LOCAL]], [[PRIVATE]], [[PUBLIC]], [[RELEASE]], [[RESTORE]], [[SAVE]], [[TYPE()]] | ||
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==Description== | ==Description== | ||
The IS_STRING() function returns .T. (true) if the specified expression is a character string value, otherwise .F. (false). | The IS_STRING() function returns .T. (true) if the specified expression is a character string value, otherwise .F. (false). | ||
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==Example== | ==Example== | ||
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.T. | .T. | ||
</code> | </code> | ||
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==Products== | ==Products== | ||
Revision as of 12:51, 11 December 2012
Purpose
Function to check whether an expression is a character string
Syntax
IS_STRING(<exp>)
See Also
IS_ARRAY(), IS_FLOAT(), IS_INT(), IS_OBJECT(), ISALPHA(), ISDIGIT(), ISLOWER(), ISUPPER(), LOCAL, PRIVATE, PUBLIC, RELEASE, RESTORE, SAVE, TYPE()
Description
The IS_STRING() function returns .T. (true) if the specified expression is a character string value, otherwise .F. (false).
Example
cVAR = "Hello" ? is_string(cVAR) .T. ? is_string("World") .T. ? is_string(tostring(date())) .T.
Products
Lianja, Lianja Server
