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Gesture recognizer and button actions
... 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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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...
What is the difference between string primitives and String objects in JavaScript?
...ype, you can use Object.prototype.valueOf, but the behaviour is different. Based on a wide variety of test scenarios auto-boxing only applies the 'required' methods, without altering the primitive nature of the variable. Which is why you get better speed.
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Prevent users from submitting a form by hitting Enter
...nswered with variations of keypress, keydown etc but missed this standards based answer?
– John Rees
Jul 27 '18 at 10:27
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Backwards migration with Django South
...te your_app, South runs all new migrations, in order. (It looks at the database tables to decide which ones are 'new').
However, you can also specify any migration by number, and South will migrate your database, either forward or backward, to take it to that point. So, with the example files above...
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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SQL Server - When to use Clustered vs non-Clustered Index?
...red index.
It's the most replicated data structure in your SQL Server database. The clustering key will be part of each and every non-clustered index on your table, too.
You should use extreme care when picking a clustering key - it should be:
narrow (4 bytes ideal)
unique (it's the "row pointer...
Remove file from SVN repository without deleting local copy
... 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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How can I reverse a NSArray in Objective-C?
...nts that immutability should not be tested for at run time, but be assumed based on the returned type, so returning an NSMutableArray in this case is perfectly correct code.
– Peter N Lewis
Feb 26 '15 at 0:06
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Convert varchar to uniqueidentifier in SQL Server
... 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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