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#!/usr/bin/env python

import base64
import os

# Get a number that is random enough for cryptographic purposes.
print base64.b64encode(os.urandom(50)).decode('ascii')

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import base64
import uuid
import hashlib

def hash_password(password, salt=None):
    if salt is None:
        salt = uuid.uuid4().hex

    hashed_password = hashlib.sha512(password + salt).hexdigest()

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# show the contents of the index
git ls-files --stage

# look at contents of a git object
git show [hash]

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#http://stackoverflow.com/questions/2440692/formatting-floats-in-python-without-superfluous-zeros
#https://docs.python.org/2/library/string.html#format-specification-mini-language

'{0:g}'.format(3.140)

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#http://stackoverflow.com/questions/2295765/generating-recurring-dates-using-python

import dateutil.rrule as dr
import dateutil.parser as dp
import dateutil.relativedelta as drel
rr = dr.rrule(dr.MONTHLY,byweekday=drel.FR(3),dtstart=start, count=10)
print map(str,rr)
print map(str,rr[::2])

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#include<iostream>

// primary template
template<int i>
struct Fib {
  static int const value = Fib<i-1>::value + Fib<i-2>::value;
};

// specializations to stop recursion
// specialization is indicated

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sudo apt-get update
sudo apt-get install build-essential cmake
sudo apt-get install python-dev

#install vundle https://github.com/gmarik/Vundle.vim#about
git clone https://github.com/gmarik/Vundle.vim.git ~/.vim/bundle/Vundle.vim
#modify .virmc to use Vundle per https://github.com/gmarik/Vundle.vim#about
#Add a line like 'Plugin "Valloric/YouCompleteMe"' in bet
# run :PluginInstall to install all the specified plugins from VIM

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sudo apt-get install nodejs
sudo apt-get install npm

sudo ln -s /usr/bin/nodejs /usr/bin/node
npm -g install phantomjs

pip install selenium

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cannot find vcvarsall.bat when trying to build Python libraries.  Python 2.7 is built with the Visual Studio 2008 compiler and so extension modules must be build with the same compiler.  So install VS C++ 2008 Express which will set the VS90COMNTOOLS environment variable.
  http://go.microsoft.com/?linkid=7729279 - by default this version will only give you a 32-bit compiler - so it will only work for installing into a 32-bit Python.
  http://stackoverflow.com/questions/2817869/error-unable-to-find-vcvarsall-bat
  
  http://stackoverflow.com/a/18045219
  Update for x64 Compilers: By default this will only give you a 32-bit compiler. I learned (from here and here) that you can download specifically the Windows SDK for Windows 7 and .NET Framework 3.5 SP1 which gives you a x64 compiler for VC++ 2008 (VC++ 9.0) if you need it. Just when you are installed it, you can uncheck everything except Developer Tools >> Visual C++ Compilers which will keep you from installing all the extra SDK tools that you may not need.

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void
Stack::push(int val)
{
  StackHead expected = head.load();
  StackItem *newItem = new StackItem(val);
  StackHead newHead;
  newHead.link = newItem;
  do {
    newItem->next = expected.link;
    newHead.count = expected.count + 1;