| function reactive(val) { | |
| const isPrimitive = | |
| val instanceof Number || val instanceof String || val instanceof Boolean; | |
| return new Proxy( | |
| { | |
| [Symbol.toPrimitive]: () => val, | |
| valueOf: () => val.valueOf(), | |
| toString: () => val.toString(), | |
| }, | |
| { |
| type HTTPHeaders = { [key: string]: string | string[] }; | |
| interface HTTPResponse { | |
| status: number; | |
| headers: HTTPHeaders; | |
| body: unknown; | |
| } | |
| class Printer { | |
| #url!: string; |
xcode 太庞大，而我又用不到 xcode，只能卸载
在卸载 xcode 之后 Git 命令不起作用了
$ git
xcrun: error: active developer path
("/Applications/Xcode.app/Contents/Developer")
does not exist, use `xcode-select --switch path/to/Xcode.app`
to specify the Xcode that you wish to use for command line
每个平台的信号定义或许有些不同。下面列出了POSIX中定义的信号。 Linux 使用34-64信号用作实时系统中。 命令man 7 signal提供了官方的信号介绍。
在POSIX.1-1990标准中定义的信号列表
$ echo kern.maxfiles=65536 | sudo tee -a /etc/sysctl.conf
$ echo kern.maxfilesperproc=65536 | sudo tee -a /etc/sysctl.conf
$ sudo sysctl -w kern.maxfiles=65536
$ sudo sysctl -w kern.maxfilesperproc=65536
$ ulimit -n 65536| interface User { | |
| username: string; | |
| roles: string[]; | |
| } | |
| interface Role { | |
| name: string; | |
| desc: string; | |
| permission: Permission[]; | |
| } |
| const babylon = require("babylon"); | |
| const types = require("babel-types"); | |
| const visitors = { | |
| File(node, scope) { | |
| evaluate(node.program, scope); | |
| }, | |
| Program(program, scope) { | |
| for (const node of program.body) { | |
| evaluate(node, scope); |
| package main | |
| import ( | |
| "net/http" | |
| "log" | |
| "io/ioutil" | |
| "encoding/json" | |
| "bytes" | |
| "strings" | |
| ) |
构建一个可用的内存缓存.
| const { spawn, exec } = require('child_process'); | |
| const COMMAND = Symbol('command'); | |
| class Shell { | |
| constructor(command) { | |
| this[COMMAND] = [command]; | |
| } | |
| } | |
| const run = new Proxy( |