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@agnellvj
agnellvj / friendly_urls.markdown
Created September 11, 2011 15:52 — forked from jcasimir/friendly_urls.markdown
Friendly URLs in Rails

Friendly URLs

By default, Rails applications build URLs based on the primary key -- the id column from the database. Imagine we have a Person model and associated controller. We have a person record for Bob Martin that has id number 6. The URL for his show page would be:

/people/6

But, for aesthetic or SEO purposes, we want Bob's name in the URL. The last segment, the 6 here, is called the "slug". Let's look at a few ways to implement better slugs.

@dsc
dsc / gist:3855240
Created October 8, 2012 21:52
Python argparse Cheatsheet
Arg Name or Optional Flags:
positional : str = "foo"
options : str = "-f", "--foo"
Standard:
action : str = [store], append, store_true, store_false, store_const, append_const, version
default : * = [None]
type : callable = [str], argparse.FileType(mode='wb', bufsize=0)
Exotic:
@timf
timf / gist:4040915
Created November 8, 2012 19:20
vagrant ramdisk (Linux)
cd /home/tim/VirtualBox\ VMs/
mv proxydev2_1351794515 tmp
mkdir proxydev2_1351794515
sudo mount -t tmpfs -o size=10G tmpfs /home/tim/VirtualBox\ VMs/proxydev2_1351794515
cp -a tmp/* proxydev2_1351794515/
# go back to vagrant directory and `vagrant up`
@CatTail
CatTail / htmlentity.js
Created November 30, 2012 08:27
Javascript: encode(decode) html text into html entity
// encode(decode) html text into html entity
var decodeHtmlEntity = function(str) {
return str.replace(/&#(\d+);/g, function(match, dec) {
return String.fromCharCode(dec);
});
};
var encodeHtmlEntity = function(str) {
var buf = [];
for (var i=str.length-1;i>=0;i--) {
@bradley219
bradley219 / hamming_distance.c
Created April 8, 2013 17:30
MySQL extension for user-defined function HAMMING_DISTANCE, which quickly calculates hamming distance between two 64-bit integers passed as arguments.
#ifdef STANDARD
/* STANDARD is defined, don't use any mysql functions */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifdef __WIN__
typedef unsigned __int64 ulonglong; /* Microsofts 64 bit types */
typedef __int64 longlong;
#else
typedef unsigned long long ulonglong;
@radu-gheorghe
radu-gheorghe / sharp_search.sh
Created July 10, 2013 08:43
index and search for a value containing #
curl -XDELETE localhost:9200/test1
curl -XPUT localhost:9200/test1
curl -XPUT localhost:9200/test1/test/_mapping -d '{
"test": {
"properties": {
"foo": {
"type": "string",
"index": "not_analyzed"
}
}
@pglombardo
pglombardo / gist:7630100
Last active May 24, 2022 19:14
How to open your private Github repository and still keep a couple things under wrap

We're happy to say that we recently released the code for the TraceView Ruby instrumentation on Github as Open Source. There are a ton of benefits for AppNeta (and the community) in doing this so making the decision was easy... but the process of actually opening the repository and still keeping a few things private was slightly trickier. Here's the route we took that has worked out really well.

The Situation and Strategy

The Ruby instrumentation has always been sheltered on Github - albeit always in a private Github repository. We used the issues, pull requests and wiki pages extensively for everything from new employee resources to hosting screenshots, customer issues, internal discussions and links to other project and management tools (e.g. Asana).

Outside of the commits and the code, everything else was either of little use to the public or potentially company or customer confidential - stuff that shouldn't or couldn't be shared publicly. So this put us

@danharper
danharper / background.js
Last active June 29, 2024 19:32
Bare minimum Chrome extension to inject a JS file into the given page when you click on the browser action icon. The script then inserts a new div into the DOM.
// this is the background code...
// listen for our browerAction to be clicked
chrome.browserAction.onClicked.addListener(function (tab) {
// for the current tab, inject the "inject.js" file & execute it
chrome.tabs.executeScript(tab.ib, {
file: 'inject.js'
});
});

Virtual DOM and diffing algorithm

There was a [great article][1] about how react implements it's virtual DOM. There are some really interesting ideas in there but they are deeply buried in the implementation of the React framework.

However, it's possible to implement just the virtual DOM and diff algorithm on it's own as a set of independent modules.