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<HTML><TITLE>Strings, Files, and Glob Pattern Matching</TITLE><BODY BGCOLOR="#FFF0E0" VLINK="#0FBD0F" TEXT="#101000" LINK="#0F0FDD">
<A NAME="top"><H1>Strings, Files, and Glob Pattern Matching</H1>
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<P> Since all data in Tcl is either a string or an array which maps strings to
strings, it should not be surprising that there are lots of commands for
working with strings.
<P> The first section in this chapter covers the <TT>string</TT> action family.
This family views strings as sequences of characters. Other built-in commands
deal with strings from other points of view. To mention two: there are
commands in the previous chapter that view strings as lists and there are
commands in the next chapter that view strings as potential matches for
regular-expression patterns.
<P> This chapter describes several useful action families. All of these action
families make use of strings and all make use of <TT>glob</TT> pattern matching
which is a topic deserving of its own section.
<P> <UL>
<LI>
The <TT>string</TT> Action Family
<LI>
The <TT>file</TT> Action Family
<LI>
The <TT>info</TT> Action Family
<LI>
Glob Patterns
<LI>
Commands Accepting Glob Patterns
<LI>
Developing for Multiple Platforms
<LI>
<CITE>A Statistical Example</CITE>
<LI>
Solutions to Exercises
</UL>
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<I>Jun 17, 1998</I>
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