saifulapm

VIM Cheatsheet

Motion, keyboard commands and shortcuts for VI Improved

• Legend
• Motion / Normal mode
• Insert mode
• Changes
• Yank/Put or Copy/Paste
• Visual/Visual Block Mode

saifulapm

• Dynamic Dispatch
• Dynamic Method
• Ghost Methods
• Dynamic Proxies
• Blank Slate
• Kernel Method
• Flattening the Scope (aka Nested Lexical Scopes)
• Context Probe
• Class Eval (not really a 'spell' more just a demonstration of its usage)
• Class Macros

saifulapm

Create database

rake db:create

Create database table

This will creates a migration file in /db/migrate without table definition.

rails g migration create_<TABLE>

saifulapm

Download free egghead.io videos

Download Egghead.io videos using Lynx Browser and youtube-dl. This method will only work for videos that do not require a pro account.

Prerequesits

You need a Unix/Linux box with Lynx console browser and Youtube-dl installed.

saifulapm

---
METHOD 1

This should roughly sort the items on distance in MySQL, and should work in SQLite.
If you need to sort them preciser, you could try using the Pythagorean theorem (a^2 + b^2 = c^2) to get the exact distance.
---
SELECT *
FROM table
ORDER BY ((lat-$user_lat)*(lat-$user_lat)) + ((lng - $user_lng)*(lng - $user_lng)) ASC

saifulapm

{% comment %}

	Instructions:
	- Create a blank page called 'Google Base Product Feed'and save it
	- Open that page for editing and select 'page.google-feed' from the page template selector
	- Add a brief site description to the meta-shop-description snippet
	- The feed url should now be available at http://www.yoursite.com/pages/google-base-product-feed
	- validate your field at http://validator.w3.org/feed/
	- when ready, submit your feed at http://base.google.com

saifulapm

" Install by saving as plugin/match_visual.vim in your Vim (or Neovim) config
" directory.
"
" Reimplementation of https://github.com/aaron-p1/match-visual.nvim
"
" Requires the function `getregion`, you have it if this expression prints 1:
"
"   echo exists('*getregion')
"
if !exists('*getregion')