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NodeJS: How to get the server's port?
You often see example hello world code for Node that creates an Http Server, starts listening on a port, then followed by something along the lines of:
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How do I correctly clone a JavaScript object?
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To do this for any object in JavaScript will not be simple or straightforward. You will run into the problem of erroneously picking up attributes from the object's prototype that should be left in the prototype and not copied to the new...
Is it possible to create static classes in PHP (like in C#)?
...cally (if you try and call self::__construct() you'll get an error).
Therefore you'd have to create an initialize() function and call it in each method:
<?php
class Hello
{
private static $greeting = 'Hello';
private static $initialized = false;
private static function initialize(...
How to replace spaces in file names using a bash script
...erscores in file and directory names starting from a given root directory? For example:
18 Answers
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Does Dart support enumerations?
Does Dart support enumerations? For instance:
7 Answers
7
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Deadly CORS when http://localhost is the origin
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Chrome does not support localhost for CORS requests (a bug opened in 2010, marked WontFix in 2014).
To get around this you can use a domain like lvh.me (which points at 127.0.0.1 just like localhost) or start chrome with the --disable-web-security flag (assu...
How to initialize private static members in C++?
...tion, is not a definition. The templated const idiom provides a workaround for the cases where you need the definition in a header file. Another and simpler workaround is a function that produces the value of a local static constant. Cheers & hth.,
– Cheers and hth. - Alf
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Why can I not push_back a unique_ptr into a vector?
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make_shared() returns a shared_ptr, not a unique_ptr. Unfortunately, there is no make_unique() in C++11; an unfortunate omission that hopefully will be fixed in C++14
– cdmh
Apr 14 '13 at 19:59
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Create a pointer to two-dimensional array
...ay are contiguously stored
uint8_t *matrix_ptr = l_matrix[0];
Now, that formally only allows you to access the elements of the first element of the two dimensional array. That is, the following condition hold
matrix_ptr[0] = ...; // valid
matrix_ptr[19] = ...; // valid
matrix_ptr[20] = ...; // ...
Best way to test if a row exists in a MySQL table
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Test with ...EXISTS( SELECT 1/0 FROM someothertable). For SQL Server & Oracle - it makes no difference to use *, 1 or NULL because EXISTS only tests for a boolean based on 1+ of the WHERE criteria matching.
– OMG Ponies
Nov 4 '09 at 23:...