fang duan dfang

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.

Element

Box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
elem.getClientRects(), elem.getBoundingClientRect()

Shadowsocks Proxy

Server-side setup

apt-get install python-pip
pip install shadowsocks

sudo ssserver -p 443 -k password -m aes-256-cfb --user nobody -d start

Postgres push triggers

Watch a table for changes and push a notification with a payload describing the change.

Example

In the Postgres shell:

-- Create the functions

	FROM ruby:2.4-alpine

	ENV PATH /root/.yarn/bin:$PATH

	RUN apk update && apk upgrade && \
	apk add --no-cache bash git openssh build-base nodejs tzdata

	RUN apk update \
	&& apk add curl bash binutils tar gnupg \
	&& rm -rf /var/cache/apk/* \

	sudo su -
	mkdir -p /opt/bin
	version=$(curl https://github.com/docker/compose/releases/latest -sLI -o /dev/null -w '%{url_effective}' \| sed 's:.*/::')
	curl -L "https://github.com/docker/compose/releases/download/$version/docker-compose-$(uname -s)-$(uname -m)" -o /opt/bin/docker-compose
	chmod +x /opt/bin/docker-compose
	docker -v
	docker-compose -v
	exit

	package log

	import (
	"fmt"
	"github.com/Sirupsen/logrus"
	"runtime"
	"strings"
	)

	var logger = logrus.New()

	package poison

	import (
	"database/sql"
	"reflect"

	"github.com/gorilla/schema"
	)

	// Convertors for sql.Null* types so that they can be


	import(
	"reflect"
	"time"
	"github.com/gorilla/schema"
	)
	func ConvertFormDate(value string) reflect.Value {
	s, _ := time.Parse("2006-01-_2", value)
	return reflect.ValueOf(s)
	}

	package main

	import (
	"fmt"
	"github.com/codegangsta/negroni"
	"github.com/gorilla/mux"
	"log"
	"net/http"
	)

	package main

	import "strconv"
	import "fmt"

	type Color string
	type Make string
	type Model string

	const (