| #lang racket | |
| (require parser-tools/lex | |
| (prefix-in re- parser-tools/lex-sre) | |
| parser-tools/yacc) | |
| (provide (all-defined-out)) | |
| (define-tokens a (NUM VAR)) | |
| (define-empty-tokens b (+ - EOF LET IN)) | |
| (define-lex-trans number | |
| (syntax-rules () |
| var parser = document.createElement('a'); | |
| parser.href = "http://example.com:3000/pathname/?search=test#hash"; | |
| parser.protocol; // => "http:" | |
| parser.hostname; // => "example.com" | |
| parser.port; // => "3000" | |
| parser.pathname; // => "/pathname/" | |
| parser.search; // => "?search=test" | |
| parser.hash; // => "#hash" | |
| parser.host; // => "example.com:3000" |
| (import 'java.security.MessageDigest | |
| 'java.math.BigInteger) | |
| (defn md5 [s] | |
| (let [algorithm (MessageDigest/getInstance "MD5") | |
| size (* 2 (.getDigestLength algorithm)) | |
| raw (.digest algorithm (.getBytes s)) | |
| sig (.toString (BigInteger. 1 raw) 16) | |
| padding (apply str (repeat (- size (count sig)) "0"))] | |
| (str padding sig))) |
| // Accumulators | |
| // ============================================================================= | |
| // | |
| // A tiny library for reactive programming that offers blazing fast generic | |
| // collection manipulation, asyncronous flow control and the ability to | |
| // represent infinitely large collections. | |
| // | |
| // Copyright Gordon Brander, 2013. Released under the terms of the [MIT license](http://opensource.org/licenses/MIT). | |
| // | |
| // Background: |
| docker ps | awk {' print $1 '} | tail -n+2 > tmp.txt; for line in $(cat tmp.txt); do docker kill $line; done; rm tmp.txt |
| #!/bin/sh | |
| #if run_with_bin_sh | |
| # Doing this because arguments can't be used with /usr/bin/env on linux, just mac | |
| exec fsharpi --define:mono_posix --exec $0 $* | |
| #endif | |
| (* | |
| * Crossplatform FSharp Makefile Bootstrapper | |
| * Apache licensed - Copyright 2014 Jay Tuley <jay+code@tuley.name> | |
| * v 2.0 https://gist.github.com/jbtule/9243729 |
If you have a Flame reference device and wanna try out alternate versions of Firefox OS apart from the stock one, but not willing to build from source, then follow this mini-manual.
You can download the packages from the Nightly Build directories of Mozilla FTP. You specifically need the following two files:
| navigator.mozBluetooth.defaultAdapter.startLeScan([]).then(handle => { | |
| console.log('Start scanning', handle); | |
| handle.ondevicefound = e=> { | |
| var record = parseScanRecord(e.scanRecord); | |
| if (record) { | |
| console.log('Found an iBeacon', record.uuid, record.major, record.minor, e.rssi); | |
| } | |
| } | |
| setTimeout(() => { |
| module StateMachine = | |
| type State<'Event> = | |
| | Next of ('Event -> State<'Event>) | |
| | Stop | |
| let feed state event = | |
| match state with | |
| | Stop -> failwith "Terminal state reached" | |
| | Next handler -> event |> handler |
Psql is a fully-fledged CLI client for Postgres, but most people are unaware of its many advanced features.
~/.psqlrc can be edited to persist any behavior or configuration settings you want between psql sessions. It behaves just like ~/.bashrc or ~/.vimrc, sourced at psql launch. See More out of psql for some interesting configurations.
If you have a long query to write and rewrite, you can use \e to edit your query in an editor.
Use \watch at the end of a query in order to automatically re-run the query every few seconds - great for monitoring while making changes elsewhere in your application architecture.
