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How to find where a method is defined at runtime?
...
This is really late, but here's how you can find where a method is defined:
http://gist.github.com/76951
# How to find out where a method comes from.
# Learned this from Dave Thomas while teaching Advanced Ruby Studio
# Makes the cas...
What does the Reflect object do in JavaScript?
...ble:
ES6 spec, Reflection
MDN Reflect (including details and examples to all of its methods)
Original answer (for (historic) understanding and extra examples):
The Reflection proposal seems to have progressed to the Draft ECMAScript 6 Specification. This document currently outlines the Reflect...
Ways to implement data versioning in MongoDB
... approach would be to store diffs. Because the display of these diffs is really a special action, I would put the diffs in a different "history" collection.
I would use the different collection to save memory space. You generally don't want a full history for a simple query. So by keeping the histo...
AWS S3 copy files and folders between two buckets
...rows the following error A client error (PermanentRedirect) occurred when calling the ListObjects operation: The bucket you are attempting to access must be addressed using the specified endpoint. Please send all future requests to this endpoint.
– Giovanni Bitliner
...
Test if a variable is a list or tuple
... excludes custom sequences, iterators, and other things that you might actually need. However, sometimes you need to behave differently if someone, for instance, passes a string. My preference there would be to explicitly check for str or unicode like so:
import types
isinstance(var, types.String...
Test PHP headers with PHPUnit
...78
Error: Class 'PHPUnit_Util_Configuration' not found in - on line 378
Call Stack:
0.0013 582512 1. {main}() -:0
Try add this to your bootstrap file to fix it:
<?php
if (!defined('PHPUNIT_COMPOSER_INSTALL')) {
define('PHPUNIT_COMPOSER_INSTALL', __DIR__ . '/path/to/composer/ven...
Why can I throw null in Java? [duplicate]
...way makes it a bit more obvious as to why this works:
try {
Exception foo = null;
if(false) {
foo = new FileNotFoundException();
} // Oops, forgot to set foo for the true case..
throw foo;
} catch (Exception e){
System.out.println(e instanceof NullPointerException);
...
If Python is interpreted, what are .pyc files?
...'translated'. Python is then compiled to a bytecode. AFAIK, only Bash is really interpreted , all other popular "interpreted" languages are all compiled to a bytecode.
– bfontaine
Aug 6 '14 at 13:42
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Hidden Features of Java
...en I first discovered it, never heard of it before.
ThreadLocals are typically not so widely known as a way to store per-thread state.
Since JDK 1.5 Java has had extremely well implemented and robust concurrency tools beyond just locks, they live in java.util.concurrent and a specifically interest...
How do I get a PHP class constructor to call its parent's parent's constructor?
I need to have a class constructor in PHP call its parent's parent's (grandparent?) constructor without calling the parent constructor.
...