gvaughn

Vim and Git in Code Demos

I want to give a code demo that shows progression of the code. I thought it would be great if I could craft the series of commits on a branch and have a single vim keystroke that would checkout the next (or previous) commit and force my buffers to reload. That would allow me to show one commit, then give me the freedom to live code how the next step is done, but when I advance to the next commit I know I'll have working code. It's like a safety harness for live coding.

Here's how it's supposed to work:

• I created a test_forward branch, and, yeah, it's hardcoded in the vimscript :-(
• Then I created 3 consecutive commits with one line changes in my README
• optional: I used "git tag $tag_name" to give a friendly name in my bash prompt for each commit (I wish the fugitive statusline would use it too though)
• I checked out the 1st of the demo commits

Kartones

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

zhzhxtrrk

-- that is very similar to that of pandoc's HTML writer.
-- There is one new feature: code blocks marked with class 'dot'
-- are piped through graphviz and images are included in the HTML
-- output using 'data:' URLs.
--
-- Invoke with: pandoc -t sample.lua
--
-- Note:  you need not have lua installed on your system to use this
-- custom writer.  However, if you do have lua installed, you can
-- use it to test changes to the script.  'lua sample.lua' will

lfender6445

Pry Cheat Sheet

• Youtube Tutorial 2013

Command Line

• pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
• pry -r ./config/environment.rb - load your rails into a pry session

Debugger

suhailvs

Much nicer solution can be used for any stackexchange sites::: First, go to stackoverflow.com(or any other stackexchange sites) then define this in your Javascript console(Press F12):

function minec(){ 
  $.getJSON('/unicoin/rock',function(data) {
    setTimeout(function(){
      $.post('/unicoin/mine?rock='+data.rock,{fkey:StackExchange.options.user.fkey})
      .done(function( data ) {
        console.log(data);

});

0xdevalias

First, go to stackoverflow.com then define this in your Javascript console:

var hackMeSomeUnicoins = function(myFkey) {
  console.log("Ok, let's hack you some shiny unicoins! <3 /dev/alias (www.devalias.net)")
  console.log("The powers that be say you can only mine a rock every 10sec, so we do it every 11sec to be sure.")
  window.setInterval(function(){
    $.get( "http://stackoverflow.com/unicoin/rock", function( data ) {
      var rockId = data.rock;
      $.post( "http://stackoverflow.com/unicoin/mine?rock=" + rockId, { fkey: myFkey })
 .done(function( data ) {

jj1bdx

Installation of Erlang R16B03-1 and 17.0-rc2 to OS X 10.9.2 with Xcode and wxWidgets 3.0.0

• Note: always set umask 022 for system-shared libraries
• See http://blog.equanimity.nl/blog/2014/02/09/erlang-r17-rc1-on-osx-with-wx-and-a-working-observer/ for the details
• wxWidgets 3.0.0 works the same in R16B03-1 and 17.0-rc2
• Note well: wx:demo() on OS X 10.9.2 with wxWidgets 3.0.0 is still unstable, though observer:start() is more stable.
• If you really don't have time, try Erlang Solutions' 32bit (not 64bit) distribution at https://www.erlang-solutions.com/downloads/download-erlang-otp to use it as a debugging console.
• Update 28-FEB-2014 0230UTC: Leo Liu reports brew install wxmac --disable-monolithic will do. See http://erlang.org/pipermail/erlang-questions/2014-February/077952.html.

Installing wxWidgets

pascalpoitras

This configuration is not maintained anymore. You should think twice before using it, Breaking change and security issue will likely eventually happens as any abandonned project.

mustafaturan

#!/usr/bin/env bash
# repository
cd /tmp
wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -Uvh epel-release-6-8.noarch.rpm

# system update
yum -y update
yum -y groupinstall "Development Tools"
yum -y install libxslt-devel libyaml-devel libxml2-devel gdbm-devel libffi-devel zlib-devel openssl-devel libyaml-devel readline-devel curl-devel openssl-devel pcre-devel git memcached-devel valgrind-devel mysql-devel ImageMagick-devel ImageMagick

sayotte

Eshell V5.9.1  (abort with ^G)
1> rr(parent).
[parent_type]
2> rr(child).
[child_type,parent_type]
3>
3> 
3> {ok, P1} = child:start_link(none).
{ok,<0.42.0>}
4>