= SAS String Functions =

<<TableOfContents>>

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== Find ==

The '''`FIND`''' function returns the character position of a pattern in a string expression, or else returns 0. The final argument is a modifier.

For example, to scan for a pattern case insensitively (`I`), try:

{{{
foo = substr(foobar, find(foobar, 'FOO', 'i'), 3);
}}}

And to trim trailing whitespace from the string expression and/or the pattern (`T`), try:

{{{
foo = substr(foobar, find(foobar, 'foo       ', 't'), 3);
}}}

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== Index ==

The '''`INDEX`''' function returns the character position of a pattern in a string expression, or else returns 0.

{{{
foo = substr(foobar, index(foobar, 'foo'), 3);
}}}

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== LowCase ==

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== PropCase ==

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== PrxMatch ==

The '''`PRXMATCH`''' function returns the character position of a regular expression in a string expression, or else returns 0.

{{{
foo = substr(foobar, prxmatch("/[Ff][Oo]{2}/", foobar);, 3);
}}}

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== PrxParse ==

Compile a regular expression. This can beb used like:

{{{
if _N_ = 1 then PATTERN = prxparse("/[Ff][Oo]{2}/");
retain PATTERN;

mystart = prxmatch(PATTERN, foobar);
}}}



== SubStr ==

The '''`SUBSTR`''' function returns the substring of a string expression from a character position to a character length.

{{{
foo = substr('foobar', index(foobar, 'foo'), 3);
}}}

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== UpCase ==



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