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 Related technical and longer articles Pattern Matching - a primer on regular ExpressionsTips and short articles on this subject Regular expression for 6 digits OR 25 digitsSparse and Greedy matching - Tcl 8.4 Tcl / regsub - changing a string and using interesting bits Ignore case in Regular Expression Regular expressions made easy - building from components Regular Express Primer Matching within multiline strings, and ignoring case in regular expressions Well House Consultants
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Java ResourcesWell House Manor Resources Perl Resources Python Resources PHP Resources Object Orientation and General topics MySQL Resources Linux / LAMP / Tomcat Resources Well House Consultants Resources Extras Resources C and C++ Resources Ruby Resources Tcl/Tk Resources Web and Intranet Resources | Advanced Regular Expressions - Tcl/Tk module T247
Regular expressions are considerably enhanced in recent versions of Tcl, and this module, which assumes some prior knowledge of basic regular expressions, goes into advanced features such as groupings, sparse and greedy counts, and the Posix standard groups.
This topic is presented on public course Tcl Basics Examples from our training material
Background information
Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from http://www.training-notes.co.uk.
Topics covered in this module
Where are regular expressions used?
Anchors, literals, counts and literal groups. Advanced assertions \m \y \z and friends. Posix standard literal groups. Space and greedy counts, {} counts. Grouping and grouping options. Back references. Substitute and execute using subst. Example - analysing a URL string on a Web server. Complete learning
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