A Tour of Go Function values

Functions are values too.

在函数式语言中中函数都是变量，比如在javascript中

package main 

import (
    "fmt"
    "math"
)

func main() {
    hypot := func(x,y float64) float64 {
        return math.Sqrt(x*x + y*y)
    }
    fmt.Println(hypot(3, 4))
}

时间： 2024-08-25 01:11:04

A Tour of Go Function values的相关文章

A Tour of Go Function closures

Go functions may be closures. A closure is a function value that references variables from outside its body. The function may access and assign to the referenced variables; in this sense the function is "bound" to the variables. For example, the

JavaScript- The Good Parts function Curry

Functions are values, and we can manipulate function values in interesting ways.Currying allows us to produce a new function by combining a function and an argument: var add1 = add.curry(1); document.writeln(add1(6)); // 7 add1 is a function that was

Hackerrank--String Function Calculation(后缀数组）

题目链接 Jane loves string more than anything. She made a function related to the string some days ago and forgot about it. She is now confused about calculating the value of this function. She has a string T with her, and value of string S over function

后端程序员之路 52、A Tour of Go-2

# flowcontrol - for - for i := 0; i < 10; i++ { - for ; sum < 1000; { - For is Go's "while" - for sum < 1000 { - Forever - for { - if - if x < 0 { - } else { - if v := math.Pow(x

Programming in Scala (Second Edition) 读书笔记6 函数和闭包

When programs get larger, you need some way to divide them into smaller, more manageable pieces. For dividing up control flow, Scala offers an approach familiar to all experienced programmers: divide the code into functions. In fact, Scala offers sev

微信开发 select选择框

最近在该企业微信的功能,要做一个微信界面,要使用select来做下拉选择框部分前台HTML代码: 在选择分享组的时候,要从后台查询数据来做选择项 1 <form:form id="imgForm" modelAttribute="uploadImg" action="${oauthPath}/img/${agentKey}/submit" method="post"> 2 <input id="i

PostgreSQL数据库内核分析笔记（这本书没有怎么很好的看，主要就是一些数据结构、概念和流程的文字介绍）

PostgreSQL数据库内核分析跳转至: 导航. 搜索目录 1系统概述 2体系结构 3存储管理 4索引 5查询编译 6查询执行 7事务处理与并发控制 8数据库安全 9附录A 用Eclipse开发和调试系统概述初始化数据库:./initdb --no-locale -D ../data ./pg_ctl start -D ../data 数据库命令:initdb createuser dropuser createdb dropdb pg_dump pg_restore pg_ctl v

lua中的迭代器与泛型for

任何一种结构,只要允许你遍历集合中所有元素的都可称之为迭代器.lua中常常使用函数来描述迭代器,每次调用该函数都返回集合的下一个元素.每一个迭代器都需要保存一些状态来知道当前处于什么位置和如何进行下一次迭代.对于这样的任务,闭包提供了很好的机制来完成.一个典型的闭包结构包含两个函数:一个是闭包自身,一个是创建闭包的工厂. 例如,我们可以写过简单的list迭代器,让他仅仅返回值. function values( t ) local i = 0; return function() i = i +

ECMAscript

ECMAScript 1. ECMAScript ECMAScript:JavaScript的规范 ECMA-262号文件 - JavaScript 循环的方法: var ary = [1,2,3,4,5]; // for循环 for(var i = 0;i < ary.length;i++){ console.log(ary[i]); } // forEach ary.forEach(function(value){ console.log(value); }) // for..in.. fo