ivanacostarubio

Profiling performance

Using perf:

$ perf record -g binary
$ perf script | stackcollapse-perf.pl | rust-unmangle | flamegraph.pl > flame.svg

NOTE: See @GabrielMajeri's comments below about the -g option.

ivanacostarubio

- # app/views/comments/_comment.html.slim

li data-controller="comment" data-action="click->comment#hello"
  = "#{comment.message} by #{comment.user.email}"

ivanacostarubio

#!/bin/bash
cat /path/to/public_key | ssh root@yourdokkuinstance "sudo sshcommand acl-add dokku [description]"

ivanacostarubio

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

ivanacostarubio

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

ivanacostarubio

// Model
// OAStack.m
@protocol OAStack

- (void) pushData:(id)data;
- (id)   popData;

@optional

- (void) purgeStack;

ivanacostarubio

            include Math;R1=1.0; R2=2.0;K2=5.0
         SS=40;K1=SS*K2*3/(8*(R1+R2));def rf(a, b)
      cosA=cos(a);sinA=sin(a);cosB=cos(b);sinB=sin(b)
   o=Array.new(SS).fill{Array.new(SS).fill(' ')};b=Array.
  new(SS).fill{ Array.new(SS).fill(0)}; t=0.0;while t<2*PI
cost=cos(t);sint=sin(t);p=0.0;while p<2*PI;cosp=cos(p);sinp=
sin(p);cx=R2+R1*cost;cy=R1*       sint;x=cx*(cosB*cosp+sinA*
sinB*sinp)-cy*cosA*sinB;             y=cx*(sinB*cosp-sinA*##
cosB*sinp)+cy*cosA*cosB               ;z=K2+cosA*cx*sinp+cy*
sinA;ooz=1/z;xp=(SS/2+K1*            ooz*x).to_i ;yp= (SS/2-

ivanacostarubio

=begin

Halle la suma de todos los multiplos de 3 y 5, por debajo de 1000

escriba un metodos para hallar el factorial del un numero

metodos para la suma de enteros hasta un numero n, luego la suma de cuadrados, los cubos y las potencias

=end

ivanacostarubio

module MotionModel
  module Model
    def save(*)
      puts "called MM#save"
    end
  end
end

module MotionModel
  module Paranoid

ivanacostarubio

require 'rr'

class CrazyMath
  def self.fib(n)
    if n < 3
      1
    else
      CrazyMath.fib(n - 1) + CrazyMath.fib(n - 2)
    end
  end