Marco Feng fengt

Pass arrays to shared libraries from python using C types

This example implements a simple shared library in C.

This library called libfifthy exposes a function called add_fifthy which takes an array of integers and modify it in place by adding 50 to all elements.

Then there's some code in python which builds an array and invokes the add_fifthy from the shared library and reads the altered array values.

Usage

Installing gcc 4.8 and Linuxbrew on CentOS 6

The GCC distributed with CentOS 6 is 4.4.7, which is pretty outdated. I'd like to use gcc 4.8+. Also, when trying to install Linuxbrew you run into a dependency loop where Homebrew's gcc depends on zlib, which depends on gcc. Here's how I solved the problem.

Note: Requires sudo privileges.

Resources:

http://superuser.com/a/676337/88393: Forum response on using CERN's open Scientific Linux distribution of RHEL's developer toolset.
http://linux.web.cern.ch/linux/devtoolset/: CERN's developer toolset installation instructions.

	How to Completely Remove Android Studio


	Execute these commands from the terminal

	rm -Rf /Applications/Android\ Studio.app
	rm -Rf ~/Library/Preferences/AndroidStudio*
	rm ~/Library/Preferences/com.google.android.studio.plist
	rm -Rf ~/Library/Application\ Support/AndroidStudio*
	rm -Rf ~/Library/Logs/AndroidStudio*

	#!/usr/bin/python
	import re
	import sys

	def removeComments(text):
	""" remove c-style comments.
	text: blob of text with comments (can include newlines)
	returns: text with comments removed
	"""
	pattern = r"""

	# Exporting entire database:
	mysqldump -u user -p database --opt \| gzip > database.sql.gz

	# Export table
	mysqldump -uroot --opt --databases DB_NAME --tables TABLE_NAME \| gzip > /tmp/TABLE_NAME.export.sql.gz

	# Importing:
	gunzip < database.sql.gz \| mysql -u user -p database

	# Credit http://failshell.io/mysql/using-gzip-and-gunzip-with-mysql-to-importexport-backups/

	#!/usr/bin/env python
	import sys
	import pandas as pd
	import pymongo
	import json



	def import_content(filepath):
	mng_client = pymongo.MongoClient('localhost', 27017)

	### INSTALLATION NOTES ###
	# 1. Install Homebrew (https://github.com/mxcl/homebrew)
	# 2. brew install zsh
	# 3. Install OhMyZsh (https://github.com/robbyrussell/oh-my-zsh)
	# 4. brew install reattach-to-user-namespace --wrap-pbcopy-pbpaste && brew link reattach-to-user-namespace
	# 5. Install iTerm2
	# 6. In iTerm2 preferences for your profile set:
	# Character Encoding: Unicode (UTF-8)
	# Report Terminal Type: xterm-256color
	# 7. Put itunesartist and itunestrack into PATH