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Understanding Python's “is” operator
...ultiple names point to the same object. is tells you if two names point to one and the same object. == tells you if two names refer to objects that have the same value.
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Use dynamic (variable) string as regex pattern in JavaScript
...se JavaScript's RegExp object.
If you also want to match/replace more than one time, then you must add the g (global match) flag. Here's an example:
var stringToGoIntoTheRegex = "abc";
var regex = new RegExp("#" + stringToGoIntoTheRegex + "#", "g");
// at this point, the line above is the same as: v...
Will the Garbage Collector call IDisposable.Dispose for me?
...eeds to explicitly call Dispose.
This is logical, and is what I've always done in the rare situations where a finalizer is warranted.
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How can I hash a password in Java?
...ate a password manager with a specified cost
*
* @param cost the exponential computational cost of hashing a password, 0 to 30
*/
public PasswordAuthentication(int cost)
{
iterations(cost); /* Validate cost */
this.cost = cost;
this.random = new SecureRandom();
}
priva...
How do I “decompile” Java class files? [closed]
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In case one installed the Eclipse java decompiler plugin on Eclipse Juno, and Eclipse started hanging on Marketplace DND Initialization forcing to kill the whole process: removing the jd.*.jar from Eclipse plugins directory just fixe...
How can I select an element with multiple classes in jQuery?
... What is the difference between this answer and the accepted one?
– Vivian River
Aug 9 '11 at 14:32
49
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Is there a better way to find out if a local git branch exists?
... I'm not sure there's much more to add to that, but there might as well be one answer that just says "That command does everything you want" :)
The only thing you might want to be careful of is that branch names can have surprising characters in them, so you may want to quote <branch-name>.
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How to obtain Signing certificate fingerprint (SHA1) for OAuth 2.0 on Android?
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Is there a way to create a new one using this method? I tried to do this, but my old keystore file is there, but I think it's the wrong one (I need a debug certificate, not a release one), plus I forgot the password. >_< Thanks if you have a tip.
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How to use ScrollView in Android?
...ut simply needs to be arranged so they all have room on the screen. As for one ScrollView inside another, that's difficult. Instead, the Android compatibility library has NestedScrollView. There are lots of tutorials on the web for how to use NestedScrollView for that application.
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What's the simplest way to print a Java array?
In Java, arrays don't override toString() , so if you try to print one directly, you get the className + '@' + the hex of the hashCode of the array, as defined by Object.toString() :
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