Di Hei dhei

Copy-Item

https://technet.microsoft.com/en-us/library/ee156818.aspx

Copy a file from source directory to destination directory

Copy-Item c:\source\file.txt c:\destination

Copy all files from source directory to destination directory

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Bridging Native & React for iOS & Android

js -> native

native -> js

Pimping Up Your PowerShell & Cmder with Posh-Git, Oh-My-Posh, & Powerline Fonts

Backstory (TLDR)

I work as a full-stack developer at work. We are a Windows & Azure shop, so we are using Windows as our development platform, hence this customization.

For my console needs, I am using Cmder which is based on ConEmu with PowerShell as my shell of choice.

Yes, yes, I know nowadays you can use the Linux subsystem on Windows 10 which allow you to run Ubuntu on Windows. If you are looking for customization of the Ubuntu bash shell, check out this article by Scott Hanselman.

	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

	#!/usr/bin/env bash

	rm -rf "${HOME}/Library/Caches/CocoaPods"
	rm -rf "`pwd`/Pods/"
	pod update

	<meta name="twitter:card" content="summary">
	<meta name="twitter:site" content="@site_username">
	<meta name="twitter:creator" content="@creator_username">
	{% if page.title %}
	<meta name="twitter:title" content="{{ page.title }}">
	{% else %}
	<meta name="twitter:title" content="{{ site.title }}">
	{% endif %}
	{% if page.url %}
	<meta name="twitter:url" content="{{ site.url }}{{ page.url }}">

	{
	// http://eslint.org/docs/rules/

	"ecmaFeatures": {
	"binaryLiterals": false, // enable binary literals
	"blockBindings": false, // enable let and const (aka block bindings)
	"defaultParams": false, // enable default function parameters
	"forOf": false, // enable for-of loops
	"generators": false, // enable generators
	"objectLiteralComputedProperties": false, // enable computed object literal property names

	2023.8.28

	据多名网友回复，此方法已失效。

	最新解决办法请参考此贴：[v2ex: 请问 github 的两步验证（two-factor authentication）大家是怎么做的？](https://www.v2ex.com/t/967533)

	https://www.v2ex.com/t/967533

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