LucasArruda

config.assets.precompile += [

  # precompile any CSS or JS file that doesn't start with _
  /(^inline[^_\/]|\/[^_])[^\/]*.(js|css)$/,
  ...

LucasArruda

After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work.
The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0."

Database files have to be updated before starting the server, here are the steps that had to be followed:

# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default
brew unlink postgresql
brew install postgresql@9.6
brew unlink postgresql@9.6
brew link postgresql

LucasArruda

curl -O https://ufpr.dl.sourceforge.net/project/icu/ICU4C/58.2/icu4c-58_2-src.tgz
tar xzvf icu4c-58_2-src.tgz
cd icu/source
chmod +x runConfigureICU configure install-sh
./runConfigureICU MacOSX
make
sudo make install

LucasArruda

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.

LucasArruda

var parser = document.createElement('a');
parser.href = "http://example.com:3000/pathname/?search=test#hash";

parser.protocol; // => "http:"
parser.hostname; // => "example.com"
parser.port;     // => "3000"
parser.pathname; // => "/pathname/"
parser.search;   // => "?search=test"
parser.hash;     // => "#hash"
parser.host;     // => "example.com:3000"

LucasArruda

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert $1 -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 $2

Results

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module.exports = function(grunt) {
  var config = {};

  // Set all the tasks you want to load.
  var tasks = [
    , "grunt-contrib-concat"
    , "grunt-contrib-uglify"
    , "grunt-contrib-jshint"
    , "grunt-contrib-watch"
  ];

LucasArruda

GIT_VERSION=`git --version | awk '{print $3}'`
URL="https://raw.github.com/git/git/v$GIT_VERSION/contrib/completion/git-completion.bash"
OTHER_URL="https://raw.githubusercontent.com/git/git/v$GIT_VERSION/contrib/completion/git-completion.bash"


PROFILE="$HOME/.profile"

echo "Downloading git-completion for git version: $GIT_VERSION..."
if ! curl "$URL" --silent --output "$HOME/.git-completion.bash"; then
	echo "ERROR: Couldn't download completion script. Make sure you have a working internet connection." && exit 1

LucasArruda

#!/usr/bin/env bash
if [[ ! -f "$1" ]]; then
  echo "=> Movie file not found"
  exit 1
fi

tempfile=/tmp/output.gif

rm -f $tempfile