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@fnicollet
fnicollet / gist:5764080
Created June 12, 2013 09:50
Single tile WMS layer for Leaflet. Kind of hacked on top of ImageOverlay, a new image is requested when the viewport is changed. Supports reprojection through proj4-leaflet There are actually 2 images (_image and _imageSwap) because if you use the _image from ImageOverlay, and set his "src" attribute to the new WMS bbox, your layer will disappea…
goog.provide('L.SingleTileWMSLayer');
goog.require('L.Map');
L.SingleTileWMSLayer = L.ImageOverlay.extend({
defaultWmsParams: {
service: 'WMS',
request: 'GetMap',
version: '1.1.1',
@georgevreilly
georgevreilly / sessionrecorder.py
Last active June 15, 2023 14:45
WSGI Middleware to record Request and Response data
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
WSGI middleware to record requests and responses.
"""
from __future__ import print_function, unicode_literals
import logging
@Zverik
Zverik / SingleTile.js
Last active July 4, 2018 12:41
A layer for single-tile WMS layers. Displays a layer as a big picture, updates it on pan and zoom. This is a hack, made for an internal project; still waiting for https://github.com/Leaflet/Leaflet/issues/558 to be solved nicely. Example: L.singleTile('http://irs.gis-lab.info/').setParams({layers: 'landsat'}).addTo(map); (won't work, because tha…
/*
* L.SingleTile uses L.ImageOverlay to display a single-tile WMS layer.
* url parameter must accept WMS-style width, height and bbox.
*/
L.SingleTile = L.ImageOverlay.extend({
defaultWmsParams: {
service: 'WMS',
request: 'GetMap',
version: '1.1.1',
@mjhea0
mjhea0 / 1 - sql_interview_questions.md
Last active June 22, 2024 09:44
Jitbit's SQL interview questions
@miguelgrinberg
miguelgrinberg / rest-server.py
Last active July 30, 2025 09:09
The code from my article on building RESTful web services with Python and the Flask microframework. See the article here: http://blog.miguelgrinberg.com/post/designing-a-restful-api-with-python-and-flask
#!flask/bin/python
from flask import Flask, jsonify, abort, request, make_response, url_for
from flask_httpauth import HTTPBasicAuth
app = Flask(__name__, static_url_path = "")
auth = HTTPBasicAuth()
@auth.get_password
def get_password(username):
if username == 'miguel':
@edsu
edsu / unshorten_tweet_urls.py
Created January 18, 2013 18:19
get unshortened URLs out of large batches of Twitter JSON data
#!/usr/bin/env python
"""
Feed this program line-oriented JSON tweet data (as received from the API)
on STDIN and get unshortened URLs mentioned in the tweets on STDOUT.
This module will look up multiple urls at once using the multiprocessing
library. Change CONCURRENCY to have more or less processes, defaults to 10.
"""
@rgreenjr
rgreenjr / postgres_queries_and_commands.sql
Last active August 13, 2025 15:56
Useful PostgreSQL Queries and Commands
-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'
@pcworld
pcworld / _README.md
Last active June 19, 2024 03:06
Linux Spotify Ad Mute
@lost-theory
lost-theory / gist:3005268
Created June 27, 2012 16:35
consume JSON REST API blueprint inside flask app
from flask import Flask, jsonify, Blueprint, current_app
import json
## REST api ###################################################################
api = Blueprint('api', __name__)
@api.route("/users")
def users():
return jsonify(users=[
@jboner
jboner / latency.txt
Last active August 15, 2025 11:28
Latency Numbers Every Programmer Should Know
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