The sample results have various attributes (success/fail, elapsed time, data size etc.) and can be viewed in the various listeners.
This controller lets you send an FTP "retrieve file" or "upload file" request to an FTP server.
The mechanics of this particular pattern aside, a regex engine can test a pattern against an input string to see if it matches. If a particular problem seems to be very challenging however, it may help to revert to the abstract view that is used for reasoning about regular expressions.
These functions and operators are defined for use in [XML Path Language (XPath) 2.0], [XQuery 1.0: An XML Query Language] and [XSL Transformations (XSLT) Version 2.0] and other related XML standards.
🙂 If you haven’t used XReg Exp before, it’s an MIT licensed Java Script library that provides augmented (and extensible! You get new modern syntax and flags beyond what browsers support natively.
XReg Exp is also a regex utility belt with tools to make your client-side grepping and parsing easier, while freeing you from worrying about pesky cross-browser inconsistencies and things like manually manipulating or slicing strings when tokenizing. There are a few minor breaking changes that shouldn’t affect most people and have easy workarounds.
On an abstract level a regular expression, regex for short, is a representation of a set of strings. Instead of having a list and thus the complete set of strings that are valid zip codes, it’s often more practical to have a short and precise regex that completely describes the set. As an example consider the set of strings that end in “.csv”.
The following is a regular expression pattern that represents this set.