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string-length Function
Returns the number of characters in the string.
number string-length(string)
Remarks
If the argument is omitted, it returns the number of characters in the string-value of the context node.
The following function call returns 4:
string-length("abcd")
The following function call returns 5:
string-length("ab cd")
If an argument is not of type string, it is first converted to a string and then evaluated.
See Also
Data Types in Schemas | XDR Schema Data Types Reference | XML Data Types Reference