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Best way to test if a row exists in a MySQL table
... no difference to use *, 1 or NULL because EXISTS only tests for a boolean based on 1+ of the WHERE criteria matching.
– OMG Ponies
Nov 4 '09 at 23:28
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How do I find a stored procedure containing ?
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64
Be aware routine_definition is cropped at 4000 chars just in case you have a long procedure. Use OBJECTPROPERTY method instead.
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Handling an empty UITableView. Print a friendly message
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Based on the answers here, here is a quick class I made that you can use on in your UITableViewController.
import Foundation
import UIKit
class TableViewHelper {
class func EmptyMessage(message:String, viewController:U...
Installing PDO driver on MySQL Linux server
...se PDO in order to parameterize my queries and safely save HTML in the database.
6 Answers
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How is malloc() implemented internally? [duplicate]
...e sizes. For example, a malloc implementation could create buckets for 16, 64, 256 and 1024 byte structures. If you ask malloc to give you memory of a given size it rounds that number up to the next bucket size and then gives you an element from that bucket. If you need a bigger area malloc could us...
instantiate a class from a variable in PHP?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Thread Safety in Python's dictionary
...ble. Much more costly will be the hours spent bug hunting in a complex codebase when those CPython implementation details change one day.
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Rails - Could not find a JavaScript runtime?
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Ubuntu 64 is giving a huge trouble to get therubyracer installed, not even the last version, 0.11.1, solved that. This answer helped me on that.
– Eduardo
Jan 9 '13 at 20:59
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Iterating over each line of ls -l output
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Why does Maven have such a bad rep? [closed]
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It imposes rigid structure on you from the start.
It's XML-based so it's as hard to read as ANT was.
Its error reporting is obscure and leaves you stranded when things go wrong.
The documentation is poor.
It makes hard things easy, and simple things hard.
It takes too much time to ma...