thomaswilburn

Win zip()

I don't often use zip(), but by coincidence this week I ran into it a few times, using both Python and JavaScript. In the former, it's a built-in, but in the latter it's typically provided by a library like D3. And it struck me as kind of a fun warm-up challenge. How would you write this function in modern JavaScript?

Well, let's see how D3 does it. Oh, it's a wrapper around transpose(), here we go...

import min from "./min.js";

function length(d) {

larsneo

<!-- Goes into viewer.html just before ending </body> -->
<script>
    let pinchZoomEnabled = false;
    function enablePinchZoom(pdfViewer) {
        let startX = 0, startY = 0;
        let initialPinchDistance = 0;        
        let pinchScale = 1;    
        const viewer = document.getElementById("viewer");
        const container = document.getElementById("viewerContainer");
        const reset = () => { startX = startY = initialPinchDistance = 0; pinchScale = 1; };

shenqihui

前端面试笔试题说明

出题的意义

• 初步筛选出面试者，不用来一遍公司才发现不合适，节省面试者的时间。
• 现场作答，由于面试者没带电脑，不方便作答，没法体现自己的能力。
• 通过回答了的题目，提前判断出面试者的水平，节省面试的时间。
• 让面试者充分准备。

akras14

Git Cheat Sheet

Commands

Getting Started

git init

or

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD