upsuper

一行 Python 实现树

使用 Python 内置的 defaultdict，我们可以很容易的定义一个树形数据结构：

def tree(): return defaultdict(tree)

就是这样！

avendael

map <c-n> scrollDown
map <c-p> scrollUp
map <c-b> scrollLeft
map <c-f> scrollFullPageDown
map <c-b> scrollFullPageUp
map <c-v> scrollFullPageDown
map <a-v> scrollFullPageUp
map <c-w> copyCurrentUrl
map <a-w> copyCurrentUrl
map <c-k> copyCurrentUrl

shriphani

#lang racket

;; Code for the little schemer

(define (atom? x)
  (and (not (pair? x))
       (not (null? x))))

(define (lat? l)
  (cond ((null? l) #t)

smpallen99

defmodule Constants do
  @moduledoc """
  An alternative to use @constant_name value approach to defined reusable 
  constants in elixir. 

  This module offers an approach to define these in a
  module that can be shared with other modules. They are implemented with 
  macros so they can be used in guards and matches

  ## Examples: 

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

davoclavo

emacs --daemon to run in the background. emacsclient.emacs24 <filename/dirname> to open in terminal

NOTE: "M-m and SPC can be used interchangeably".

• Undo - C-/
• Redo - C-?
• Change case: 1. Camel Case : M-c 2. Upper Case : M-u

3. Lower Case : M-l

shautzin

package main

import (
	"bytes"
	"crypto/aes"
	"crypto/cipher"
	"fmt"
)

func main() {

lattner

Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Contents

• Introduction
• Overall Vision

soulmachine

First of all, please note that token expiration and revoking are two different things.

1. Expiration only happens for web apps, not for native mobile apps, because native apps never expire.
2. Revoking only happens when (1) uses click the logout button on the website or native Apps;(2) users reset their passwords; (3) users revoke their tokens explicitly in the administration panel.

1. How to hadle JWT expiration

A JWT token that never expires is dangerous if the token is stolen then someone can always access the user's data.

Quoted from JWT RFC:

HashNuke

import AppKit
import SwiftUI

// Delete this line if not using a playground
import PlaygroundSupport

struct ContentView: View {
    var body: some View {
        
        // if spacing is not set to zero, there will be a gap after the first row