...y general that it never gets in your way, and somewhat surprisingly it actually "aids in achieving agility" (as you said) because when your program compiles you can be almost certain that is correct, so this certainty lets you try out things you might be otherwise afraid to try -- there is a "dynami...

...sted in. If the string can contain new lines you may have to use the "dot all" modifier to allow the dot to match the new line character. Whether or not you have to do this, and how to do this, depends on the language you are using. It appears that you forgot to mention the programming language you...

... were based upon mutable values. Those values changed outside the map and all of the hashing became obsolete. Theorists like to harp on this point, but in practice I haven't found it to be too much of an issue. Another aspect is the logical "reasonability" of your code. This is a hard term to def...

... instance, if a hash function has a range R(h) = 0...100, then you need to allocate an array of 100 (pointers-to) elements, even if you are just hashing 20 elements. If you were to use a binary search tree to store the same information, you would only allocate as much space as you needed, as well as...

...refman/5.0/en/mysql-indexes.html An index can be used to efficiently find all rows matching some column in your query and then walk through only that subset of the table to find exact matches. If you don't have indexes on any column in the WHERE clause, the SQL server has to walk through the whole ...

...int of learning a language, recursion isn't a feature. If your professor really docked you marks for using a "feature" he hadn't taught yet, that was wrong. Reading between the lines, one possibility is that by using recursion, you avoided ever using a feature that was supposed to be a learning ou...

I need to recursively search for a specified string within all files and subdirectories within a directory and replace this string with another string. ...

..., I undid your -1's. The question is "How do I get the time of day", which all answers answer. Your downvoting is because you read the question as "How to format hours like 5:00 PM", while OP only (and explicitly) mentioned that specific date format as an example. You even downvoted @Musikero31's an...

... Assuming you're using MySQL, Model.all(:order => 'DATE(updated_at), price') Note the distinction from the other answers. The updated_at column will be a full timestamp, so if you want to sort based on the day it was updated, you need to use a function to ...

... (whose decimal equivalent is 0). When you create an array of something, all entries are also zeroed. So your array contains five zeros right after it is created by new. Note (based on comments): The Java Virtual Machine is not required to zero out the underlying memory when allocating local va...