Dmitry d9k

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Prepare an environment according to A minimum setting to use browser REPL of ClojureScript.
Input lines of dom-example.cljs to the REPL.
Here's a SCREEN CAST.

Enjoy!

A minimum setting to use browser REPL of ClojureScript

Assumed that you have set leiningen up and can use it.

1. Prepare files

Copy project.clj, repl-test.cljs and brepl-test.html from this gist or git clone this gist and move or copy repl-test.cljs under src directory.

$ git clone https://gist.github.com/6183122.git
$ cd 6183122/

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

	var Col = require('react-bootstrap/lib/Col')
	var PageHeader = require('react-bootstrap/lib/PageHeader')
	var React = require('react')
	var Row = require('react-bootstrap/lib/Row')
	var {connect} = require('react-redux')
	var {reduxForm} = require('redux-form')

	var DateInput = require('./DateInput')
	var FormField = require('./FormField')
	var LoadingButton = require('./LoadingButton')

	"""Rolling time window counter and rate limit using Redis.

	Use Redis sorted sets to do a rolling time window counters and limiters. These are useful for preventing denial of service, flood and reputation attack against site elements which trigegr outgoing action (email, SMS).

	Example how to do a Colander validator which checks that the form has not been submitted too many times within the time period::

	import colander as s

	@c.deferred
	def throttle_invites_validator(node, kw):

	# Based on http://techspot.zzzeek.org/2011/01/14/the-enum-recipe/

	import six
	from sqlalchemy.dialects import postgresql
	from sqlalchemy.types import SchemaType, TypeDecorator, Enum
	from sqlalchemy import __version__, text, cast
	import re

	if __version__ < '0.6.5':
	raise NotImplementedError("Version 0.6.5 or higher of SQLAlchemy is required.")

	#!/bin/bash

	# Huikee CSV-to-XLSX konvertteri by Samuli
	# Versio 2.0, using unoconv
	# Unicode now works

	root_dir=$(pwd)
	FOLDERS=$(find $root_dir -type d)

	for fol in $FOLDERS

	from pprint import pprint
	import jinja2
	import markdown

	HTML_TEMPLATE = """{% macro get_html() %}
	{{ content \| markdown }}
	{% endmacro %}
	{% set html_content = get_html() %}

	Title from Markdown meta-data: {{ get_title() }}

	if has("autocmd")
	" remove trailing white spaces
	autocmd BufWritePre * :%s/\s\+$//e
	endif