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Primitive Data Types TutorialExtraction FunctionsWafl contains the following string extraction functions: subStr : (String * Integer * Integer -> String) strLeft : (String * Integer -> String) strRight : (String * Integer -> String) strLTrim : (String -> String) strRTrim : (String -> String) strTrim : (String -> String) String extraction functions return a sub string of the specified string argument. Function subStr(s,p,n) returns sub string of the string s, beginning at position n and n characters long. Function strLeft(s,n) returns sub string of first n characters of the string s. Function strRight(s,n) returns sub string of last n characters of the string s. Function strLTrim(s) returns sub string of s not containing leading non-visible characters. Function strRTrim(s) returns sub string of s not containing ending non-visible characters. Function strTrim(s) returns sub string of s not containing both leading and ending non-visible characters. Source code:{# subStr( "abcdefgh", 2, 3 ), strLeft( "abcdefgh", 3 ), strRight( "abcdefgh", 3 ), strLTrim( " abcd " ), strRTrim( " abcd " ), strTrim( " abcd " ) #} Result:{# "cde", "abc", "fgh", "abcd ", " abcd", "abcd" #}
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© 2006 Saša Malkov | |||||||||||||||