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What is an existential type?
... because of the existential operator (∃). I'm not sure what the point of it is, though. What's the difference between
11...
How do I check if an object has a specific property in JavaScript?
...perty] or, even worse, x.key will give you completely misleading results.
It depends on what you're looking for. If you want to know if an object physically contains a property (and it is not coming from somewhere up on the prototype chain) then object.hasOwnProperty is the way to go. All modern br...
How to hash some string with sha256 in Java?
How can I hash some string with sha256 in Java? Does anybody know of any free library for this?
15 Answers
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How to initialize static variables
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PHP can't parse non-trivial expressions in initializers.
I prefer to work around this by adding code right after definition of the class:
class Foo {
static $bar;
}
Foo::$bar = array(…);
or
class Foo {
private static $bar;
static function init()
{
sel...
In MySQL what does “Overhead” mean, what is bad about it, and how to fix it?
simple question, but its been nagging me for a while now....
4 Answers
4
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serve current directory from command line
...meone give me a hint, howto serve the current directory from command line with ruby? it would be great, if i can have some system wide configuration (e.g. mime-types) and simply launch it from every directory.
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What is 'Currying'?
...The second statement defines a new function called add3 that will add 3 to its argument. This is what some people may call a closure. The third statement uses the add3 operation to add 3 to 4, again producing 7 as a result.
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Replacing .NET WebBrowser control with a better browser, like Chrome?
... project I started a while back that thankfully got picked up by the community and turned into something wonderful.
The project wraps the Chromium Embedded Framework and has been used in a number of major projects including Rdio's Windows client, Facebook Messenger for Windows and Github for Window...
Disabling Chrome Autofill
I have been running into issues with the chrome autofill behavior on several forms.
68 Answers
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Where should I put the log4j.properties file?
I wrote a web service project using netbeans 6.7.1 with glassfish v2.1, put log4j.properties to the root dir of project and use:
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