Dan Dorman dandorman

How to make faster scroll effects?

Avoid too many reflows (the browser to recalculate everything)
Use advanced CSS3 for graphic card rendering
Precalculate sizes and positions

Beware of reflows

The reflow appens as many times as there are frames per seconds. It recalculate all positions that change in order to diplay them. Basically, when you scroll you execute a function where you move things between two reflows. But there are functions that triggers reflows such as jQuery offset, scroll... So there are two things to take care about when you dynamically change objects in javascript to avoid too many reflows:

Recommended code reading from Ruby Parley

Ruby

cane: https://github.com/square/cane
Capybara: https://github.com/jnicklas/capybara
REST Client: https://github.com/archiloque/rest-client
Savon: https://github.com/savonrb/savon
Unicorn: https://github.com/defunkt/unicorn

List moved

Please use https://github.com/bf4/learning to fork and pull changes.

I'm having trouble understanding the benefit of require.js. Can you help me out? I imagine other developers have a similar interest.

From Require.js - Why AMD:

The AMD format comes from wanting a module format that was better than today's "write a bunch of script tags with implicit dependencies that you have to manually order"

I don't quite understand why this methodology is so bad. The difficult part is that you have to manually order dependencies. But the benefit is that you don't have an additional layer of abstraction.

I use tmux splits (panes). Inside one of these panes there's a Vim process, and it has its own splits (windows).

In Vim I have key bindings C-h/j/k/l set to switch windows in the given direction. (Vim default mappings for windows switching are the same, but prefixed with C-W.) I'd like to use the same keystrokes for switching tmux panes.

An extra goal that I've solved with a dirty hack is to toggle between last active panes with C-\.

Here's how it should work:

	$stack, $draws = [], {}

	def method_missing *args
	return if args[0][/^to_/]
	$stack << args.map { \|a\| a or $stack.pop }
	$draws[$stack.pop(2)[0][0]] = args[1] if args[0] == :<
	end

	class Array
	def +@

	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'

	ActiveSupport.on_load(:active_record) do
	module Arel::NullsLastPredications
	def nulls_last
	Arel::Nodes::NullsLast.new self
	end
	end

	module Arel::Nodes
	class NullsLast < Unary
	def gsub *args

	FP_OO Chapter 10.9 Exercise Prerequisites:

	1. Install leinengen

	I hope you're using this already to run your repl...

	2. lein new playground

	This will create you a directory called playground

	#!/usr/bin/env bash
	#
	# Wraps curl with a custom-drawn progress bar. Use it just like curl:
	#
	# $ curl-progress -O http://example.com/file.tar.gz
	# $ curl-progress http://example.com/file.tar.gz > file.tar.gz
	#
	# All arguments to the program are passed directly to curl. Define your
	# custom progress bar in the `print_progress` function.
	#