根据参数类型有不同的返回类型的多态方法,指定类型定义的正确方法是什么?
index.js:
// @flow
import {func1} from './lib1';
const s: string = func1('string');
const b: boolean = func1(); // should cause type error but does not!
lib1.js:
export function func1(p) {
return (typeof p === 'string') ? p : 0;
}
defs/
我有一个字符串和一个字典中的两个单词,我想知道在我的字符串中是否有不是我的字典单词。
var string = 'foobarfooba';
var patt = new RegExp("[^(foo|bar)]");// words from dictionary
var res = patt.test(string);
console.log(res);//return false
它应该返回true,因为在我的字符串中也有'ba',但是它返回false。
我在node.js中通过TCP检索一些字符串格式的JSON,想要解析它。因此,我的方法与此类似。我缩短并简化了它,所以你不需要知道周围的逻辑。
socket.on("data", function(data) {
console.log(data.toString()); // Shows the original stringifyed version
console.log(JSON.parse(data.toString())); // Doesn't work
});
完整的(美化的) JSON是这样的。如您所见,
波:
class Apple {
private String appleName;
private String appleBenefits;
}
在jsp中,我使用jquery编辑器插件(cleditor.js)输入字段"appleBenefits" from the jsp.的值。
String appleBenefits = "<ul><li> An apple a day keeps the <hr><font color="f
我正在制作一个基本的幻灯片,它在Firefox中运行良好,但IE给了我以下错误:
Expected identifier, string or number script.js, line 26 character 4
Expected identifier, string or number script.js, line 26 character 4
Expected identifier, string or number script.js, line 24 character 4
Expected identifier, string or number sc
我正在编写一个简短的Node.js片段,它解析RSS,提取链接,将它们重新配置为我想要的PDF链接,然后编写这些文件。代码如下所示:
var https = require('https');
var fs = require('fs');
const Parser = require("rss-parser");
let parser = new Parser();
parser.parseURL("https://regulations.justia.com/regulations/fedreg?limit=20&mode=
//tools.js
function randomString() {
var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
var string_length = 8;
var randomstring = '';
for (var i=0; i<string_length; i++) {
var rnum = Math.floor(Math.random() * chars.length);
正如标题所说,我对requestHandlers.js文件中的node.js命令提示符有一个问题。我正在遵循Node初学者手册中的指南,到目前为止,这本书--或者更确切地说,我的代码--没有任何问题。
我有以下输入:
index.js:
var server = require("./server");
var router = require("./router");
var requestHandlers = require("./requestHandlers");
var handle = {}
handle["/"] =
fun main() {
datum(datum)
}
val datum = "Bfasld |datum=July 13, 1996 |autor="
fun datum (test: String) {
var text : MutableList<String> = test.split("|") as MutableList<String>
println(text.forEach{println(it)})
val d = Datum()
text.forEach{ it
import React, { Component } from 'react';
import { Slider } from 'react-slick';
import Home from './Home.js';
import About from './About.js';
class App extends Component {
render() {
var settings = {
dots:true,
};
return (
<div classN
我有一份名单
forbidden_patterns=['Word1','Word2','Word3','\d{4}']
还有一根绳子:
string1="This is Word1 a list thatWord2 I'd like to 2016 be readableWord3"
如何将forbidden_patterns中定义的所有模式和单词删除为string1,以便以以下方式结尾:
clean_string="This is a list that I'd like to be re
我被困在这里半天了。对于图像和JSon,我的问题可能很可怕,但我的问题并不是那么难。我想我已经包含了需要帮助的所有信息。我有以下查询
select id, preco, 'casas-venda' as link, descricao, dir, slug from casa_venda
union
select id, preco, 'apartamentos-vendas' as link, descricao, dir, slug from apartamento_venda
union
select id, preco, 'lo