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@napcs
napcs / .vimrc
Last active December 14, 2022 17:40
Set up Vim on Mac, Linux, or Windows. For Mac and Linux: sh <(curl -s https://gist.githubusercontent.com/napcs/532968/raw/vim.sh)
if has('win32') || has ('win64')
let $VIMHOME = $HOME."/Dropbox/dotfiles/.vim"
if !empty($CONEMUBUILD)
set term=xterm
set t_Co=256
let &t_AB="\e[48;5;%dm"
let &t_AF="\e[38;5;%dm"
endif
@hgmnz
hgmnz / query_planner.markdown
Created March 23, 2011 14:14
PostgreSQL query plan and SQL performance notes

Types of index scans

Indexes

Sequential Scan:

  • Read every row in the table
  • No reading of index. Reading from indexes is also expensive.
@cdmwebs
cdmwebs / friendly_urls.markdown
Created September 11, 2011 15:50 — 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.

@MohamedAlaa
MohamedAlaa / tmux-cheatsheet.markdown
Last active May 31, 2024 22:29
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname
@mdesantis
mdesantis / schedule.rb
Last active May 28, 2023 16:11
Schedule script for using Whenever toghether with rbenv
# Schedule script for using Whenever toghether with rbenv
#
# Whenever: https://github.com/javan/whenever
# rbenv: https://github.com/sstephenson/rbenv
set :env_path, '"$HOME/.rbenv/shims":"$HOME/.rbenv/bin"'
# doesn't need modifications
# job_type :command, ":task :output"
@ngocphamm
ngocphamm / backend-architectures.md
Created June 24, 2013 13:20 — forked from ragingwind/Backend Architectures Keywords and References.md
Backend Architectures
@chungth
chungth / testpymongo.py
Last active December 23, 2015 21:00
Some basic commands for testing connection with MongoDb by using pymongo module
# use the following command step by step in terminal
import pymongo
#get Client
client = pymongo.MongoClient("localhost", 27017)
#show all mongo document databases
client.database_names()
# choose a database
@zdwolfe
zdwolfe / gist:6721115
Last active October 1, 2018 06:38
Basic nginx configuration for AngularJS html5Mode
server {
listen 0.0.0.0:12345;
location / {
root /home/zdwolfe/src/angularAWS/app;
try_files $uri $uri/ /index.html =404;
}
}
@lfender6445
lfender6445 / gist:9919357
Last active May 12, 2024 19:09
Pry Cheat Sheet

Pry Cheat Sheet

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

@dapangmao
dapangmao / Linkedlist.md
Last active June 15, 2021 17:56
Linked List
  • Transform list to linked list
class ListNode:
    def __init__(self, val=None):
        self.val = val
        self.next = None
        self.size = 0
        if val:
            self.size = 1
    def add_to_last(self, x):