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Waiting until two async blocks are executed before starting another block
When using GCD, we want to wait until two async blocks are executed and done before moving on to the next steps of execution. What is the best way to do that?
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How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?
Is there a way to call a block with a primitive parameter after a delay, like using performSelector:withObject:afterDelay: but with an argument like int / double / float ?
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Using do block vs braces {}
.... So because of the precedence order, when you use do, you're passing the block as an additional parameter, but when you use the brackets you're passing the block as the first parameter of the results of the method invocation(s) to the left.
– Alan Storm
Jan 2...
https connection using CURL from command line
...e call to allow insecure connections.
curl -k https://whatever.com/script.php
Edit: I discovered the root of the problem. I was using an SSL certificate (from StartSSL, but I don't think that matters much) and hadn't set up the intermediate certificate properly. If you're having the same problem ...
Can I use Objective-C blocks as properties?
Is it possible to have blocks as properties using the standard property syntax?
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display:inline vs display:block [duplicate]
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display: block means that the element is displayed as a block, as paragraphs and headers have always been. A block has some whitespace above and below it and tolerates no HTML elements next to it, except when ordered otherwise (by add...
Floating elements within a div, floats outside of div. Why?
...r"></span>
</div>
CSS
span.clear { clear: left; display: block; }
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Using 'return' in a Ruby block
...mbedded scripting language, so that "end-user" code gets written in a Ruby block. One issue with this is that I'd like the users to be able to use the 'return' keyword in the blocks, so they don't need to worry about implicit return values. With this in mind, this is the kind of thing I'd like to ...
How do I match any character across multiple lines in a regular expression?
..., but there should be a modifier that you can add to the regex pattern. In PHP it is:
/(.*)<FooBar>/s
The s at the end causes the dot to match all characters including newlines.
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How do I hide javascript code in a webpage?
...s say you are worried about exposing a secret. Let's say you put it into a PHP file and call it via Ajax. Then anyone can call that PHP file and find the secret. There is probably a way to protect secrets using PHP, and I've been struggling to find it. Generate a random number and require that all a...