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How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?
... value of NO. self is cast to the BOOL value of YES.
This approach breaks down if it is anything other than a BOOL parameter.
Assuming self is a UIView.
//nil will be cast to NO when the selector is performed
[self performSelector:@selector(setHidden:) withObject:nil afterDelay:5.0];
//self will...
How would one write object-oriented code in C? [closed]
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+1 Nice example! Although if anyone really wants to go down this road, it would be more appropriate for "instance" structs to have a single field pointing to their "virtual table" instance, containing all the virtual functions for that type at one place. I.e. your tCommClass woul...
Recommendation for compressing JPG files with ImageMagick
...nput. I don't know why, but after adding some +profile options and setting down the quality I can get an smaller size but still similar to original.
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How to get index of object by its property in JavaScript?
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hands down the most direct and elegant solution, I'd make a small not that findIndex is greedy - in my case that was perfect - but users be aware that if you have objects with duplicate values (i.e. two objects with name: John) thi...
Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)
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Would like to understand why someone has down voted this answer?
– Buts
Sep 9 '16 at 1:06
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Search text in fields in every table of a MySQL database
...ssed it: SQL. This way you're searching everything and it's easy to narrow down where your data is. This method can be quite difficult to get working in certain environments though. Stack Overflow is very helpful here.
– Joel Mellon
Jan 14 '15 at 17:37
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To prevent a memory leak, the JDBC Driver has been forcibly unregistered
...n I run my web application. It runs fine but I get this message during shutdown.
14 Answers
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How do I implement onchange of with jQuery?
...ight for you, you could use some of the other jQuery events like keyup, keydown or keypress - depending on the exact effect you want.
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What is “2's Complement”?
...uldn't you say "for negative integers, do exactly the same thing but count down and switch the role of 0's and 1's"
– Koray Tugay
Jan 27 '15 at 11:41
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Markdown to create pages and table of contents?
I started to use markdown to take notes.
35 Answers
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