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How to check iOS version?
...eck if UIPopoverController is available on the current device using NSClassFromString:
if (NSClassFromString(@"UIPopoverController")) {
// Do something
}
For weakly linked classes, it is safe to message the class, directly. Notably, this works for frameworks that aren't explicitly linked as "...
How to convert PascalCase to pascal_case?
...test123_string',
);
foreach ($tests as $test => $result) {
$output = from_camel_case($test);
if ($output === $result) {
echo "Pass: $test => $result\n";
} else {
echo "Fail: $test => $result [$output]\n";
}
}
function from_camel_case($input) {
preg_match_all('!([A-Z][A-Z...
JavaScript: Object Rename Key
... @Ivo - I agree that it is risky, but there is nothing that will stop me from extending the prototype if I felt it lead to more expressive code. Although I am coming from an ECMAScript 5 mindset where you can mark a property as non-enumerable via Object.defineProperty.
– Chao...
Should image size be defined in the img tag height/width attributes or in CSS? [duplicate]
... against the grain here and state that the principle of separating content from layout (which would justify the answers that suggest using CSS) does not always apply to image height and width.
Each image has an innate, original height and width that can be derived from the image data. In the frame...
String representation of an Enum
...one instance of each AuthenticationMethod the reference equality inherited from Object works fine.
– Jakub Šturc
Feb 26 '10 at 9:24
10
...
What is the purpose of the EBP frame pointer register?
...sitive offsets.)
The idea that it is preventing a perfectly good register from being used in optimization raises the question: when and where is optimization actually worthwhile?
Optimization is only worthwhile in tight loops that 1) do not call functions, 2) where the program counter spends a sig...
How to check that a string is a palindrome using regular expressions?
...chine is composed of nodes and edges. Each edge is annotated with a letter from a finite alphabet. One or more nodes are special "accepting" nodes and one node is the "start" node. As each letter is read from a given word we traverse the given edge in the machine. If we end up in an accepting state ...
No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '…' is therefor
... is raised:
JavaScript code is limited by the same-origin policy, meaning, from a page at www.example.com, you can only make (AJAX) requests to services located at exactly the same domain, in that case, exactly www.example.com (not example.com - without the www - or whatever.example.com).
In your ca...
Unit testing private methods in C#
...ehind black box programming and encapsulation is to hide technical details from the subscriber. So it is indeed necessary to have non-trivial private methods and properties in your code. And if it's non-trivial, it needs to be tested.
– AxD
Aug 25 '16 at 23:48
...
How to change node.js's console font color?
...
How should I prevent these characters from showing when printing to file rather than console?
– Sky
Mar 29 '18 at 20:45
1
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