c0ldlimit

# check if there are tab issues in python

python -m tabnanny yourfile.py

# in vim

:%retab

c0ldlimit

#saves having to exit and install stuff
import pip
def install(package):
   pip.main(['install', package])

c0ldlimit

# copy an entire directory
cp -R dirtocopy/ newdir/

# view the last modified file in a directory
less $(ls -t *.out | head -1)

# redirection
# http://superuser.com/questions/480599/with-regards-to-piping-commands-what-are-the-greater-than-and-less-than
# http://en.wikipedia.org/wiki/Redirection_%28computing%29
> "output to"

c0ldlimit

http://stackoverflow.com/questions/1946551/excel-add-in-doesnt-get-the-hint


C:\Program Files\Microsoft Office\Office*Version*\Xlstart

C:\Documents and Settings\*User name*\Application Data\Microsoft\Excel\XLSTART

Also, check the registry for Excel OPEN entries. Start -> Run -> regedit -> HKEY_CURRENT_USER\Software\Microsoft\Office\*version*\Excel\Options. Look for any values named OPEN*x*.

c0ldlimit

import gevent
from gevent.queue import Queue

tasks = Queue()

def worker(n, work_time):
    while not tasks.empty():
        task = tasks.get()
        print("Worker %s got tasks %s" % (n, task))
        gevent.sleep(work_time) # releases the greenlet to go do something else

c0ldlimit

        <div id="main-container">
            <div id="main">
                <h1>
                    <img alt="scubabook logo" src="{{ static_url("img/logo.png") }}">
                </h1>
                <div id="login-form">
                    <form action="/auth/login/" method="post" id="login_form">
                        <fieldset>
                            <label for="username">Username</label>
                            <input autocapitalize="off" autocorrect="off" class="text-input" id="username" name="username" tabindex="1" type="text" value="">

c0ldlimit

#include<stdio.h>

int  main(int argc, char * argv[]) {

    float f = 19.86;

    int x, k;

    for (k=0; k < 32; ++k) {
        x = *(int*)&f >> (k);

c0ldlimit

http://stackoverflow.com/questions/6114115/windows-virtualenv-pip-numpy-problems-when-installing-numpy

c0ldlimit

When a matrix can be inverted:
 - matrix is a square matrix
 - linearly independent columns
 - the span of the basis is the basis R^n
 
 if C is invertible then the span of B = R^n
 span of B is R^n then C is invertible

c0ldlimit

#include <stdlib.h>
#include <stdio.h>
#include <time.h>

// my CPU has 32K of L1 cache
#define L1_CACHE_CAPACITY (32768 / sizeof(int))

int array[L1_CACHE_CAPACITY][L1_CACHE_CAPACITY];

struct timespec time_diff(struct timespec start, struct timespec end) {