henriquemenezes

-- Get Max ID from table
SELECT MAX(id) FROM table;

-- Get Next ID from table
SELECT nextval('table_id_seq');

-- Set Next ID Value to MAX ID
SELECT setval('table_id_seq', (SELECT MAX(id) FROM table));

henriquemenezes

Vimtutor:

Tips & Tricks

	:source $MYVIMRC	Reload .vimrc without restart vim, after reload run :e
	:e 			Reload buffer and trigger FileType event

Modes:

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------------------------------------------------------------------------------
2.3. NERD tree Mappings                                     *NERDTreeMappings*

Default  Description~                                             help-tag~
Key~

o.......Open files, directories and bookmarks....................|NERDTree-o|
go......Open selected file, but leave cursor in the NERDTree.....|NERDTree-go|
t.......Open selected node/bookmark in a new tab.................|NERDTree-t|
T.......Same as 't' but keep the focus on the current tab........|NERDTree-T|

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Simple Browser Benchmark

Methodology

Open the same 26 tabs in all browsers with different urls

Results

Browser	Version	Processes	Threads	Memory Usage	Memory Compressed by OSX

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function arrayDiff(a1, a2) {
  var diff = {};

  for (var i = 0; i < a1.length; i++) {
    diff[a1[i]] = true;
  }

  for (var i = 0; i < a2.length; i++) {
    if (diff[a2[i]]) {
      delete diff[a2[i]];

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One-line Random String Generator

Python

CSPRNG (Cryptographically Secure Pseudo-Random Number Generator) functions:

• os.urandom(n): return a string of n random bytes.
• random.SystemRandom(): provides random functions that uses os.urandom().

Note: Don't use random module for PRNG for security purposes.

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One-line Web Servers

Python 2.x

python -m SimpleHTTPServer 8080

Python 3.x

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#!/bin/sh
#
# This will remove the trailing whitespaces from the files and add it again to be committed.
#
# Put this into ~/.git-templates/hooks/pre-commit, and chmod +x it.

# Detect platform
platform="win"
uname_result=`uname`
if [ "$uname_result" = "Linux" ]; then

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[core]
	editor = /usr/bin/vim
	autocrlf = input
[alias]
	lg1 = log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)' --all
	lg2 = log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(bold yellow)%d%C(reset)%n''          %C(white)%s%C(reset) %C(dim white)- %an%C(reset)' --all
	lg3 = log --graph --abbrev-commit --decorate --date=relative --all
	lg = !"git lg1"
[init]
	templatedir = ~/.git-templates

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Javascript

function cpfMask(cleanValue) {
  return cleanValue.replace(/^(\d{3})(\d{3})(\d{3})(\d{2}).*/, '$1.$2.$3-$4');
}

function cnpjMask(cleanValue) {
  return cleanValue.replace(/^(\d{2})(\d{3})(\d{3})(\d{4})(\d{2}).*/, '$1.$2.$3/$4-$5');
}