bbrochier

/* Go Top */
.go-top {
    position: fixed;
    bottom: 2em;
    right: 2em;
    text-decoration: none;
    color: white;
    background-color: #f6f6f6;
    background-color: rgba(0, 0, 0, 0.3);
    font-size: 12px;

lyricat

// ==UserScript==
// @name           v2ex novice killer
// @namespace      http://shellex.info
// @author         shellex(5h3ll3x@gmail.com)
// @description    干掉使用默认头像的人的发言
// @include        http://www.v2ex.com/go/*
// @include        http://v2ex.com/go/*
// @include        http://www.v2ex.com/?tab=*
// @include        http://v2ex.com/?tab=*
// @include        http://www.v2ex.com/

hrldcpr

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!