jespr

name	analyzing-rails-performance
description	Analyze Ruby on Rails applications for performance issues. Use this skill when asked to find performance problems, optimize Rails apps, check for N+1 queries, investigate slow endpoints, or understand why something is slow. Covers N+1 query detection, missing indexes, inefficient ActiveRecord patterns, and memory bloat.

Rails Performance Analysis

Analyze Rails applications for common performance issues using pattern matching, code analysis, and Rails-specific heuristics.

jespr

// dayOffset("Wednesday", 4) 
// => "Sunday"

const dayOffset = (day, offset) => {
  const days = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"];
  
  if (days.indexOf(day) === -1) {
    return "😭 Not a valid day, dummy!";
  }
  

jespr

<script>
  document.addEventListener("DOMContentLoaded", function () {
    var formSelector = 'form';
    document.querySelector(formSelector).addEventListener("submit", function (e) {
      var isValid = true;

      // Match all fields that have aria-required="true"
      var requiredFields = document.querySelectorAll("[aria-required='true']")

      // Loop over all required fields

jespr

<a href="http://facebook.con" target="_blank">Test</a>

jespr

# Usage: ruby spaces.rb haha 2
# => "h  a  h  a"
input, spaces = ARGV[0], ARGV[1]
output = ""

input.split('').each do |char|
  output << char
  output << " " * spaces.to_i
end

jespr

Keybase proof

I hereby claim:

• I am jespr on github.
• I am jespr (https://keybase.io/jespr) on keybase.
• I have a public key whose fingerprint is 7448 C110 1AA3 3440 4D7E A01D 0A7E 6752 334E 65AF

To claim this, I am signing this object:

jespr

Pizza med ananas og koriander Jamie Oliver Style

jespr

#!/usr/bin/env ruby

# Inspiration from:
# http://jish.github.com/pre-commit/
# https://gist.github.com/2711625

messages = []
HASHROCKET_PATTERN = ":[@$_A-Za-z][_A-Za-z0-9]*[=!?]? *=> *"

# Find the names of all the filenames that have been (A)dded (C)opied or (M)odified

jespr

{ "keys": ["#"], "command": "insert_snippet", "args": {"contents": "#{$0}"}, "context":
    [
      { "key": "setting.auto_match_enabled", "operator": "equal", "operand": true },
      { "key": "selection_empty", "operator": "equal", "operand": true, "match_all": true },
      { "key": "following_text", "operator": "regex_contains", "operand": "^(\"$)", "match_all": true }
    ]
  },
  { "keys": ["#"], "command": "insert_snippet", "args": {"contents": "#{${0:$SELECTION}}"}, "context":
    [
      { "key": "setting.auto_match_enabled", "operator": "equal", "operand": true },