ReX-T allows you to easily develop complex Regular Expression patterns and test them. Developers will love our Sample Code Generator. Produce ready-to-use Swift or Objective-C code and use it for your own applications. Executing the pattern on any source text will give you a comprehensive overview of the matches, their positions and lengths. Save your completed pattern in the Pattern Library for later use - if you want to, even with usage examples. Use the pre-loaded library to get an overview of available pattern elements. Developing Regular Expression patterns has never been easier!