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#!/usr/bin/env bash | |
# This script prints out all of your Redis keys and their size in a human readable format | |
# Copyright 2013 Brent O'Connor | |
# License: http://www.apache.org/licenses/LICENSE-2.0 | |
human_size() { | |
awk -v sum="$1" ' BEGIN {hum[1024^3]="Gb"; hum[1024^2]="Mb"; hum[1024]="Kb"; for (x=1024^3; x>=1024; x/=1024) { if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x]; break; } } if (sum<1024) print "1kb"; } ' | |
} |
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-- http://stackoverflow.com/questions/1124603/grouped-limit-in-postgresql-show-the-first-n-rows-for-each-group | |
-- http://www.postgresql.jp/document/9.2/html/tutorial-window.html | |
CREATE TABLE empsalary ( | |
depname varchar(10) not null | |
, empno integer not null | |
, salary integer not null | |
); | |
INSERT INTO empsalary (depname, empno, salary) VALUES ('develop', 11, 5200); |
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#!/usr/bin/env python | |
# | |
# import modules used here -- sys is a very standard one | |
import sys, argparse, logging | |
# Gather our code in a main() function | |
def main(args, loglevel): | |
logging.basicConfig(format="%(levelname)s: %(message)s", level=loglevel) | |
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'''Provides utility functions for encoding and decoding linestrings using the | |
Google encoded polyline algorithm. | |
''' | |
def encode_coords(coords): | |
'''Encodes a polyline using Google's polyline algorithm | |
See http://code.google.com/apis/maps/documentation/polylinealgorithm.html | |
for more information. | |
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# LICENSE: public domain | |
def calculate_initial_compass_bearing(pointA, pointB): | |
""" | |
Calculates the bearing between two points. | |
The formulae used is the following: | |
θ = atan2(sin(Δlong).cos(lat2), | |
cos(lat1).sin(lat2) − sin(lat1).cos(lat2).cos(Δlong)) |
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location /resize { | |
alias /tmp/nginx/resize; | |
set $width 150; | |
set $height 100; | |
set $dimens ""; | |
if ($uri ~* "^/resize_(\d+)x(\d+)/(.*)" ) { | |
set $width $1; | |
set $height $2; | |
set $image_path $3; |
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