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What does “#define _GNU_SOURCE” imply?
...OSIX-specified functions, where the GNU folks disagreed with the standards committee on how the functions should behave and decided to do their own thing.
As long as you're aware of these things, it should not be a problem to define _GNU_SOURCE, but you should avoid defining it and instead define ...
Python constructors and __init__
... Wikipedia is a good starting point. For Python-specific stuff, I highly recommend the Python docs.
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mongoose vs mongodb (nodejs modules/extensions), which better? and why?
... with some missing features, give Mongolian DeadBeef a try: https://github.com/marcello3d/node-mongolian
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Stack vs heap allocation of structs in Go, and how they relate to garbage collection
...p and some things go on the stack and some on the heap. In some cases the compiler follows rigid rules (like "new always allocates on the heap") and in others the compiler does "escape analysis" to decide if an object can live on the stack or if it must be allocated on the heap.
In your example 2,...
Will HTML5 allow web apps to make peer-to-peer HTTP connections?
...nnections from javascript, but these connections WILL NOT BE RAW TCP.
The complete spec can be found at http://dev.w3.org/html5/websockets/
jrh
EDIT: with specific reference to peer to peer connections, check out these links:
Regarding peer to peer connections: http://www.w3.org/TR/2008/WD-html...
Using sed, how do you print the first 'N' characters of a line?
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When to use cla(), clf() or close() for clearing a plot in matplotlib?
...s import matplotlib.pyplot as plt.
In this case, there are three different commands that remove stuff:
plt.cla() clears an axes, i.e. the currently active axes in the current figure. It leaves the other axes untouched.
plt.clf() clears the entire current figure with all its axes, but leaves the wi...
What is the best way to use a HashMap in C++?
...r was introduced with the C++11 standard revision. Thus, depending on your compiler, you have to enable C++11 features (e.g. when using GCC 4.8 you have to add -std=c++11 to the CXXFLAGS).
Even before the C++11 release GCC supported unordered_map - in the namespace std::tr1. Thus, for old GCC compi...