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What’s the difference between “Array()” and “[]” while declaring a JavaScript array?
...
var a = [], // these are the same
b = new Array(), // a and b are arrays with length 0
c = ['foo', 'bar'], // these are the same
d = new Array('foo', 'bar'), // c and d are arrays with 2 strings
// these are different:
e = [3] // e.length =...
Visually managing MongoDB documents and collections [closed]
I'm using MongoDB in a reporting system and have to delete a whole bunch of test documents. While I don't have too much trouble using the JSON-based command-line tools, it gets extremely tedious to have to keep searching for documents, copy-and-pasting OIDs, etc., especially from a command prompt...
How to make a programme continue to run after log out from ssh? [duplicate]
...t over ssh.
I want it to continue to run after I logout,is this possible and how would I achieve this?
6 Answers
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How to get a list of installed Jenkins plugins with name and version pair
... visiting http://<jenkins-url>/script. (Given that you are logged in and have the required permissions).
Enter the following Groovy script to iterate over the installed plugins and print out the relevant information:
Jenkins.instance.pluginManager.plugins.each{
plugin ->
println ...
Installing specific package versions with pip
...re: http://pypi.python.org/pypi/MySQL-python/1.2.2
The download link 404s and the fallback URL links are re-directing infinitely due to sourceforge.net's recent upgrade and PyPI's stale URL.
So to properly install the driver, you can follow these steps:
pip uninstall MySQL_python
pip install -Iv ...
C/C++ macro string concatenation
... It's more than a technicality - you can't concatenate L"a" and "b" to get L"ab", but you can concatenate L"a" and L"b" to get L"ab".
– MSalters
Mar 10 '11 at 8:59
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what is difference between success and .done() method of $.ajax
Can anyone help me?
I am not able to understand the difference between success and .done() of $.ajax .
4 Answers
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How to get unique values in an array
...hat uses no libraries. This requires two new prototype functions, contains and unique
Array.prototype.contains = function(v) {
for (var i = 0; i < this.length; i++) {
if (this[i] === v) return true;
}
return false;
};
Array.prototype.unique = function() {
var arr = [];
...
Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
What is the best practice if I want to require a relative file in Ruby and I want it to work in both 1.8.x and >=1.9.2?
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In what order do static/instance initializer blocks in Java run?
...
See section 12.4 and 12.5 of the JLS version 8, they go into gory detail about all of this (12.4 for static and 12.5 for instance variables).
For static initialization (section 12.4):
A class or interface type T will be initialized immediat...