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What does 'foo' really mean?
I hope this qualifies as a programming question, as in any programming tutorial, you eventually come across 'foo' in the code examples. (yeah, right?)
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iPhone UIButton - image position
...ny idea why we need to set both left and right edge inset? Theoretically, if I move the title to left and the image to right, that would be enough. Why do I need to set both left and right?
– PokerIncome.com
Jul 11 '13 at 18:23
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Difference between .tagName and .nodeName
What is the difference between $('this')[0].nodeName and $('this')[0].tagName ?
4 Answers
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Polymorphism in C++
...opriate code.
C++ mechanisms for polymorphism
Explicit programmer-specified polymorphism
You can write f() such that it can operate on multiple types in any of the following ways:
Preprocessing:
#define f(X) ((X) += 2)
// (note: in real code, use a longer uppercase name for a macro!)
Overl...
What's the difference between using INDEX vs KEY in MySQL?
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There's no difference. They are synonyms.
From the CREATE TABLE manual entry:
KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY can
also be specified as just KEY when given in a column definition. This was
imple...
How to vertically align an image inside a div
...ttp://jsfiddle.net/img/logo.png" height=3px />
</div>
Or, if you don't want to have an extra element in modern browsers and don't mind using Internet Explorer expressions, you can use a pseudo-element and add it to Internet Explorer using a convenient Expression, that runs only once...
List of all special characters that need to be escaped in a regex
...api/java/util/regex/Pattern.html
You need to escape any char listed there if you want the regular char and not the special meaning.
As a maybe simpler solution, you can put the template between \Q and \E - everything between them is considered as escaped.
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How to run a single test from a rails test suite?
...ns a single test named "name", defined in the MyModelTest class in the specified file. The test_name is formed by taking the test name, prepending it with the word "test", then separating the words with underscores. For example:
class MyModelTest < ActiveSupport::TestCase
test "valid with g...
Is it possible to use getters/setters in interface definition?
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You can specify the property on the interface, but you can't enforce whether getters and setters are used, like this:
interface IExample {
Name: string;
}
class Example implements IExample {
private _name: string = "Bob";
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What makes JNI calls slow?
...be inlined by the JVM. Nor will they be just-in-time compiled for this specific machine -- they're already compiled.
A Java array may be copied for access in native code, and later copied back. The cost can be linear in the size of the array. I measured JNI copying of a 100,000 array to average abou...