This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# Mathieu Blondel, September 2010 | |
# License: BSD 3 clause | |
import numpy as np | |
from numpy import linalg | |
import cvxopt | |
import cvxopt.solvers | |
def linear_kernel(x1, x2): | |
return np.dot(x1, x2) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import argparse | |
from mock import Mock | |
m = Mock() | |
parser = argparse.ArgumentParser() | |
subparsers = parser.add_subparsers() | |
query_group = subparsers.add_parser('query') | |
add_group = subparsers.add_parser('add') |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
############################################################################ | |
# _ | |
# | |_ _ __ ___ _ ___ __ | |
# | __| '_ ` _ \| | | \ \/ / | |
# | |_| | | | | | |_| |> < | |
# \__|_| |_| |_|\__,_/_/\_\ | |
# | |
# Cheatsheets: | |
# https://devhints.io/tmux | |
# `property not found` issue: |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
########## SETTINGS | |
# On startup, lftp executes ~/.lftprc and ~/.lftp/rc. You can place aliases and 'set' commands | |
# there. Some people prefer to see full protocol debug, use 'debug' to turn the debug on. | |
# Certain commands and settings take a time interval parameter. It has the format Nx[Nx...], where N is time amount | |
# (floating point) and x is time unit: d - days, h - hours, m - minutes, s - seconds. Default unit is second. E.g. | |
# 5h30m or 5.5h. Also the interval can be 'infinity', 'inf', 'never', 'forever' - it means infinite interval. E.g. | |
# 'sleep forever' or 'set dns:cache-expire never'. |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
urlencode() { | |
# urlencode <string> | |
old_lc_collate=$LC_COLLATE | |
LC_COLLATE=C | |
local length="${#1}" | |
for (( i = 0; i < length; i++ )); do | |
local c="${1:$i:1}" | |
case $c in |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import time | |
import random | |
from multiprocessing import Process, Queue, JoinableQueue, cpu_count | |
""" Adjust time.sleep() values to see action of consumer """ | |
def work(id, jobs, result): | |
while True: | |
task = jobs.get() | |
if task is None: |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# First install tmux | |
brew install tmux | |
# For mouse support (for switching panes and windows) | |
# Only needed if you are using Terminal.app (iTerm has mouse support) | |
Install http://www.culater.net/software/SIMBL/SIMBL.php | |
Then install https://bitheap.org/mouseterm/ | |
# More on mouse support http://floriancrouzat.net/2010/07/run-tmux-with-mouse-support-in-mac-os-x-terminal-app/ |

This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/bin/bash | |
usage() | |
{ | |
cat << EOF | |
usage: $0 options | |
This script set ownership for all table, sequence and views for a given database | |
Credit: Based on http://stackoverflow.com/a/2686185/305019 by Alex Soto |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
OlderNewer