Using version control during software development allows experimentation without worrying about removing the experimental work when it does not pan out. Apple has gone a long way to integrating Subversion into Xcode but their instructions are oriented more towards groups of developers rather than a stand-alone version control for a single developer. There is a [...]

Drupal has functionality using AHAH and AJAX and Javascript and jQuery with the level of sophistication generally increasing in that order. AHAH is a simple AJAX approach where the data retrieved does not have to be parsed on the client side before being placed in a form. jQuery is a Javascript library built around a [...]

This serial routine computes the QR decomposition of a matrix A in Remxn, m > = n, such that P_r*QT*A*P_cT = | R | | 0 |