...ng to figure out why my red/black trees would occasionally traverse out of order, the problem was what I described above. Hopefully somebody reads this and saves themselves hours of debugging in the future! share |...

... PerformSelector:WithObject always takes an object, so in order to pass arguments like int/double/float etc..... You can use something like this. //NSNumber is an object.. [self performSelector:@selector(setUserAlphaNumber:) withObject: [NSNumber numberWithFloat: 1.0f] aft...

...point of multiple practical algorithms which apply various enhancements in order to improve performance and avoid cycle duplication. I was surprised to find out some time ago that these algorithms are not readily available in textbooks and on the web. So I did some research and implemented 4 such al...

...alue is much easier (and better practice) to create a lookup table for, in order to enforce referential integrity, and can correlate 1-to-1 with an enum, so there is parity in storing the value in memory within the application or in the database. ...

...t/optional arguments without needing to keep track of any kind of argument order, since any order of those calls will work equally well. share | improve this answer | follow ...

...et very nervous when I see people using very large rule sets (e.g., on the order of thousands of rules in a single rule set). This often happens when the rules engine is a singleton sitting in the center of the enterprise in the hope that keeping rules DRY will make them accessible to many apps tha...

... So in order to use make in a huge Java project, it would be necessary to maintain a list of all changed .java files and then call javac at the end? That sounds less than ideal to me. That's the best answer that I've seen so far. ...

...e something in the input before the focus() call unfocuses it, and the log order is log in, change, blur, log out, except in Opera where it's log in, blur, log out, change and IE where it's (even less explicably) log in, change, log out, blur. Similarly calling click() on an element that provides i...

...ile time. This is, just by reading the code, even before it is run! :) In order to do so there is only one condition: We MUST follow the rules, otherwise the compiler would not be able to automate the process at compile time. So, to ensure that we never break the rules, we are not allowed to explic...

...ntered code. You should always look at alternatives first, such as higher order functions, to see if these can better meet your needs. share | improve this answer | follow ...