firemiles firemiles

Use struct{} as keys for context.Value() in Go

In the other file of this gist I detail why we should use struct{} as context.Value() keys and not int or string. Open gist to see main.go but the TLDR is:

	type key struct{}
	ctx = context.WithValue(ctx, key{}, "my value") // Set value
	myValue, ok := ctx.Value(key{}).(string) // Get value

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

如何在路由器中实现透明代理？

0 互联网现状

目前整个互联网环境，被破坏最严重地部分，是 Web 服务体验。当直接破坏难以实现时，就会从流程链的上下游着手，如：DNS 污染。

其它地互联网服务类型，例如：邮件，可能小部分会受到 Web 服务上下游破坏地余震，但整体上基本不受影响。

	# https://github.com/gpakosz/.tmux
	# (‑●‑●)> dual licensed under the WTFPL v2 license and the MIT license,
	# without any warranty.
	# Copyright 2012— Gregory Pakosz (@gpakosz).


	# -- navigation ----------------------------------------------------------------

	# if you're running tmux within iTerm2
	# - and tmux is 1.9 or 1.9a

	type Indexer interface {
	Store
	// Index returns the stored objects whose set of indexed values
	// intersects the set of indexed values of the given object, for
	// the named index
	Index(indexName string, obj interface{}) ([]interface{}, error)
	// IndexKeys returns the storage keys of the stored objects whose
	// set of indexed values for the named index includes the given
	// indexed value
	IndexKeys(indexName, indexedValue string) ([]string, error)

	#include <stdio.h>
	#include <stdlib.h>
	#include<sys/mman.h>
	#include<fcntl.h>

	#define GPIO_CTL_BASE 0x56000000
	#define rGPBCON 0x10
	#define rGPBDAT 0x14
	#define rGPBUP 0x18

	#include <stdlib.h>
	#include <stdio.h>
	#include <glpk.h>

	/*
	Maximize
	obj: x1 + 2 x2 + 3 x3 + x4
	Subject To
	c1: - x1 + x2 + x3 + 10 x4 <= 20
	c2: x1 - 3 x2 + x3 <= 30

	#include <iostream>

	class A {
	public:
	virtual void fun() {
	std::cout<<"A"<<std::endl;
	}

	};
	class B:public A {

	docker run --privileged -it -v /var/run/docker.sock:/var/run/docker.sock jongallant/ubuntu-docker-client
	docker run --net=host --ipc=host --uts=host --pid=host -it --security-opt=seccomp=unconfined --privileged --rm -v /:/host alpine /bin/sh
	chroot /host

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console