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@endolith
endolith / frequency_estimator.py
Last active May 8, 2024 17:59
Frequency estimation methods in Python
from __future__ import division
from numpy.fft import rfft
from numpy import argmax, mean, diff, log, nonzero
from scipy.signal import blackmanharris, correlate
from time import time
import sys
try:
import soundfile as sf
except ImportError:
from scikits.audiolab import flacread
@isaacs
isaacs / node-and-npm-in-30-seconds.sh
Last active June 18, 2024 18:27
Use one of these techniques to install node and npm without having to sudo. Discussed in more detail at http://joyeur.com/2010/12/10/installing-node-and-npm/ Note: npm >=0.3 is *safer* when using sudo.
echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl https://www.npmjs.org/install.sh | sh
@GaelVaroquaux
GaelVaroquaux / 00README.rst
Last active September 15, 2023 03:58
Copy-less bindings of C-generated arrays with Cython

Cython example of exposing C-computed arrays in Python without data copies

The goal of this example is to show how an existing C codebase for numerical computing (here c_code.c) can be wrapped in Cython to be exposed in Python.

The meat of the example is that the data is allocated in C, but exposed in Python without a copy using the PyArray_SimpleNewFromData numpy

@jexchan
jexchan / multiple_ssh_setting.md
Created April 10, 2012 15:00
Multiple SSH keys for different github accounts

Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "your_email@youremail.com"
@jjlin18
jjlin18 / numpy_Capi
Created June 1, 2012 06:50
sample code for get and return numpy in C++
// From http://stackoverflow.com/questions/9128519/reading-many-values-from-numpy-c-api
/*
Make
g++ -o matrix_multiply.o -c matrix_multiply.cpp -I{python include file for numpy/noprefix.h} -I{python include} -fPIC -O2 -Wno-deprecated -Wno-write-strings
g++ -o matrix_multiply.so -shared matrix_multiply.o -L{boost lib path} -lz -lm -ldl -lpthread -boost_python
Python code:
import numpy
import matrix_multiply
@earthgecko
earthgecko / bash.generate.random.alphanumeric.string.sh
Last active July 4, 2024 17:31
shell/bash generate random alphanumeric string
#!/bin/bash
# bash generate random alphanumeric string
#
# bash generate random 32 character alphanumeric string (upper and lowercase) and
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)
# bash generate random 32 character alphanumeric string (lowercase only)
cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 32 | head -n 1
@james2doyle
james2doyle / scrollTo.js
Last active November 29, 2023 11:41
a native scrollTo function in javascript that uses requestAnimationFrame and easing for animation
// easing functions http://goo.gl/5HLl8
Math.easeInOutQuad = function (t, b, c, d) {
t /= d/2;
if (t < 1) {
return c/2*t*t + b
}
t--;
return -c/2 * (t*(t-2) - 1) + b;
};
@astrojuanlu
astrojuanlu / bezier_curves.py
Last active September 25, 2023 13:09
Interactive Bézier curves with Python using just matplotlib.
import matplotlib
matplotlib.use('webagg')
import numpy as np
from scipy.special import binom
import matplotlib.pyplot as plt
from matplotlib.lines import Line2D
@magicznyleszek
magicznyleszek / css-selectors.md
Last active March 29, 2024 01:12
CSS Selectors Cheatsheet

CSS Selectors Cheatsheet

Hi! If you see an error or something is missing (like :focus-within for few years :P) please let me know ❤️

Element selectors

Element -- selects all h2 elements on the page

h2 {
@myusuf3
myusuf3 / delete_git_submodule.md
Created November 3, 2014 17:36
How effectively delete a git submodule.

To remove a submodule you need to:

  • Delete the relevant section from the .gitmodules file.
  • Stage the .gitmodules changes git add .gitmodules
  • Delete the relevant section from .git/config.
  • Run git rm --cached path_to_submodule (no trailing slash).
  • Run rm -rf .git/modules/path_to_submodule (no trailing slash).
  • Commit git commit -m "Removed submodule "
  • Delete the now untracked submodule files rm -rf path_to_submodule