Thomas Countz Thomascountz

🚀 Let's explore Closures in #Ruby with a space-themed example! 🌌 #ThomasTip

Closures are functions/methods that can be invoked from other functions or methods, while retaining access to variables from their original scope.

def launch_sequence(seconds)
  start = Time.now
  -> do
    elapsed = Time.now - start
 remaining = seconds - elapsed.round

This is an example of selecting * that will need to execute for more than the set timeout of 1ms.

mysql> select * /*+ MAX_EXECUTION_TIME(1) */ from test_table;
ERROR 3024 (HY000): Query execution was interrupted, maximum statement execution time exceeded

mysql> select thread_id,event_name,sql_text,digest_text,current_schema,mysql_errno,returned_sqlstate,message_text,errors from performance_schema.events_statements_history where mysql_errno = 3024 limit 1\G
*************************** 1. row ***************************
        thread_id: 345
       event_name: statement/sql/select

	#!/usr/bin/env bash

	set -euo pipefail

	if [ "${1:-}" = "--help" ]; then
	cat << EOF
	Usage: ijq [filename]

	A wrapper around jq that uses fzf to interactively build jq filters.

	def print_progress(title, total, current_progress, bar_width: 50)
	progress_pct = (current_progress.to_f / total) * bar_width
	printf("\r#{title}: [%-#{bar_width}s ] -- %s", "▤" * progress_pct.round, "#{current_progress}/#{total} ")
	end

	# Usage
	1.upto(10) do \|i\|
	print_progress("Here we go!", 10, i)
	sleep 0.2
	end;print("\n")

	Rails.application.eager_load!

	# Instead of all ApplicationRecord descendants, you can
	# make an Array of only the models you care about
	data = ApplicationRecord.descendants.each_with_object({}) do \|model, data\|
	model_name = model.name.upcase
	data[model_name] = {
	columns: model.columns.map { \|column\| [column.name, column.sql_type] },
	associations: model.reflect_on_all_associations.each_with_object({}) do \|reflection, assoc_data\|
	assoc_data[reflection.name] = {

	# v0.1

	import usocket as socket
	import ussl
	import uasyncio as asyncio
	import ujson as json
	from utime import ticks_ms, ticks_diff

	class AsyncHttpClient:
	"""

	require 'benchmark/ips'

	PointStruct = Struct.new(:x, :y, :grayscale)

	PointData = Data.define(:x, :y, :grayscale)

	class PointClass
	attr_accessor :x, :y, :grayscale

	def initialize(x, y, grayscale)

	# Fork rails/rails on Github
	> git clone gem https://github.com/thomascountz/rails.git
	Cloning into 'rails'...

	> cd rails

	# Checkout SHA prior to the merge commit and create a new branch
	> git checkout -b practice-pr-46683 59fe981^
	Switched to a new branch 'practice-pr-46683'