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How do I create a category in Xcode 6 or higher?
...hanged and it's possible to add a Category directly from the New > File window.
See unmircea's answer.
I was surprised myself, and I guess because of Swift they forgot about good old Objective-C.
You have two options:
Create an Objective-C class with the category name, example UIView+Pow...
How to tell if a JavaScript function is defined
... It's trivial to avoid undefined references - simply refer to typeof window.doesthisexist instead of doesthisexist. However, using eval (which: is evil) as shown will only work with named functions - this wouldn't work with the use case in the question.
– AD7six
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Could not load type from assembly error
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If you have one project referencing another project (such as a 'Windows Application' type referencing a 'Class Library') and both have the same Assembly name, you'll get this error. You can either strongly name the referenced project or (even better) rename the assembly of the referencing...
jQuery Popup Bubble/Tooltip [closed]
...eExists = false;
//--this is the ID of the timeout that will close the window if the user mouseouts the link
var timeoutID;
function addBubbleMouseovers(mouseoverClass) {
$("."+mouseoverClass).mouseover(function(event) {
if (onDiv || onLink) {
return ...
What is correct HTTP status code when redirecting to a login page?
...pt won't have any change to get called, and the browser will popup a login window instead of redirecting the user towards the login page - so the only way is to use a 30x code.
– Claude Brisson
May 30 '16 at 11:10
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try/catch + using, right syntax
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It depends. If you are using Windows Communication Foundation (WCF), using(...) { try... } will not work correctly if the proxy in using statement is in exception state, i.e. Disposing this proxy will cause another exception.
Personally, I believe in m...
PHP Composer update “cannot allocate memory” error (using Laravel 4)
...as virtual memory when it runs out of physical memory. It's similar to the windows swap file only instead of using an actual file, linux uses a partition on the hard drive instead.
Hope this helps
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docker error: /var/run/docker.sock: no such file or directory
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For boot2docker on Windows, after seeing:
FATA[0000] Get http:///var/run/docker.sock/v1.18/version:
dial unix /var/run/docker.sock: no such file or directory.
Are you trying to connect to a TLS-enabled daemon without TLS?
All I did was:
...
Why does appending “” to a String save memory?
...tion of this.
The important thing to realise is that substring() gives a window onto an existing String - or rather, the character array underlying the original String. Hence it will consume the same memory as the original String. This can be advantageous in some circumstances, but problematic if ...
How do I get the file extension of a file in Java?
...on = fileName.substring(i+1);
}
Assuming that you're dealing with simple Windows-like file names, not something like archive.tar.gz.
Btw, for the case that a directory may have a '.', but the filename itself doesn't (like /path/to.a/file), you can do
String extension = "";
int i = fileName.last...