Simon Willison’s Weblog

4 items tagged “neilfraser”


Last night I woke up at 2am and realized that there was a fundamental problem with cursor preservation in today’s real-time collaborative applications [...] MobWrite now has what I believe to be the most advanced cursor preservation algorithm available.

Neil Fraser # 14th August 2009, 10:38 am

JSONP Memory Leak. Neil Fraser advocates iterating over and deleting every property on a JSONP script DOM node after you removeChild it from the DOM, to protect against memory leaks of “in excess of 15 MB per hour”. # 28th July 2009, 12:46 pm


google-diff-match-patch (via) Robust algorithms to perform the operations required for synchronizing plain text, in Java, JavaScript and Python. # 9th June 2007, 6:15 pm

The JavaScript alert(), confirm() and prompt() functions in Firefox, Opera and MSIE (but not Safari) will truncate the message after any null character. So an unsuspecting programmer who inserts user-provided text into one of these dialog boxes opens up an opportunity for the user to rewrite the bottom of the dialog box.

Neil Fraser # 13th January 2007, 12:28 pm