[VIM, Mac OSX] How to enable build-in Mac OSX matchit plugin

Put these 2 lines to your .vimrc file

filetype plugin on

runtime macros/matchit.vim 

Clean up CodeIgniter's database (ActiveRecord) memory usage

As what I have found when I was researching there are 2 ways:

• Prevent ActiveRecord from saving query

by

$this->db->save_queries = false;

credit: how can I free the memory used by $this->db->insert()

• Free result memory - CodeIgniter will only reclaim memory when http query processing was returned. If you request is long, you have to free by yourself

by

$query = $this->db->query('SELECT title FROM my_table');
$query->free_result();

credit: last section of Generating Query Results

Useful VIM command that I still can't remember

• “0p - pastes the last explicitly copied text
• :reg - Show a list of registers
• J - Merge current line With Next Line
• =, == - Fix indention
• u,U(in visual mode) - lower, uppercase
• q: - list command history
• q/ - list search history
• Ctrl ^ - go to previous buffer
• :w !sudo tee % - save readonly file
• diw - delete a word
• di(, da( - delete text inside/include ()
• di", da" - delete text inside/include ""

For rails.vim

• gf - open file from cursor
• :R{view,model,controller,spec} {file}