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@esperlu
esperlu / mysql2sqlite.sh
Created April 27, 2011 05:46
MySQL to Sqlite converter
#!/bin/sh
# Converts a mysqldump file into a Sqlite 3 compatible file. It also extracts the MySQL `KEY xxxxx` from the
# CREATE block and create them in separate commands _after_ all the INSERTs.
# Awk is choosen because it's fast and portable. You can use gawk, original awk or even the lightning fast mawk.
# The mysqldump file is traversed only once.
# Usage: $ ./mysql2sqlite mysqldump-opts db-name | sqlite3 database.sqlite
# Example: $ ./mysql2sqlite --no-data -u root -pMySecretPassWord myDbase | sqlite3 database.sqlite
@Dither
Dither / cssify.js
Created February 25, 2012 17:38
Convert XPath to CSS selector
// JavaScript function for converting simple XPath to CSS selector.
// Ported by Dither from [cssify](https://github.com/santiycr/cssify)
// Example: `cssify('//div[@id="girl"][2]/span[@class="body"]//a[contains(@class, "sexy")]//img[1]')`
var sub_regexes = {
"tag": "([a-zA-Z][a-zA-Z0-9]{0,10}|\\*)",
"attribute": "[.a-zA-Z_:][-\\w:.]*(\\(\\))?)",
"value": "\\s*[\\w/:][-/\\w\\s,:;.]*"
};
@indapa
indapa / student_reasoning.py
Created March 17, 2012 17:51
CPD computations for Bayesian network
#I'm taking the STanford on line course Probabilistic Graphical Models <pgm-class.org>
# They have a simple example of a Bayesian network for a Student letter of reference
# the code below was originally posted by a fellow classmate taking the class
# it really helped me in understanding how to do computations on conditional probability tables (CPDs) that
# form the heart of Bayesian networks
from numpy import *
P_I = array([
[0.7,0.3]
])
@benhedrington
benhedrington / dropbox
Created April 10, 2012 01:06
Dropbox init.d
#!/bin/sh
# dropbox service
# Replace with linux users you want to run Dropbox clients for
DROPBOX_USERS="user1 user2"
DAEMON=.dropbox-dist/dropbox
start() {
echo "Starting dropbox..."
for dbuser in $DROPBOX_USERS; do
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

@d0k
d0k / gist:3608547
Last active February 21, 2022 23:34
clang warning flags
-W
-Wextra
-Wmissing-field-initializers
-Wignored-qualifiers
-Winitializer-overrides
-Wsemicolon-before-method-body
-Wmissing-method-return-type
-Wsign-compare
-Wunused-parameter
-W#pragma-messages
@krzysztofzablocki
krzysztofzablocki / gist:4396302
Last active November 24, 2021 19:17
Set symbol breakpoint on objc_msgSend then setup this debug command to log all methods called in iOS Simulator. If you want to do device debugging change esp+4 register to r0, esp+8 to r1 Found long ago somewhere on stackoverflow.
expr -- (void)printf("[%s, %s]\n",(char *) object_getClassName(*(long*)($esp+4)), (char *) *(long *)($esp+8) )
import os
# go through the whole folder, and add all directories, that contain sourcecode
# Which directories to scan
directories = ("MyFantasticProject", "External", "libs")
def find_all_source_directories(parentDir):
def directories_contains_source(files):
for f in files:
@welldan97
welldan97 / system-wide-clipboard.zsh
Created March 10, 2013 09:51
Zsh copy & paste system wide for OS X, like in emacs
pb-kill-line () {
zle kill-line
echo -n $CUTBUFFER | pbcopy
}
pb-kill-whole-line () {
zle kill-whole-line
echo -n $CUTBUFFER | pbcopy
}
@Orangenhain
Orangenhain / import_minimizer.rb
Created November 28, 2013 12:45
Script that takes a ObjC .m file and tries to find unused (or duplicate) import statements by commenting out each #import line in turn and seeing if the project still compiles. You will have to change BUILD_DIR & BUILD_CMD.
#!/usr/bin/env ruby -w
class String
def starts_with?(prefix)
prefix.respond_to?(:to_str) && self[0, prefix.length] == prefix
end
end
HEADER_REGEX = /^#import\s+["<](.*)[">]/