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typing in typescript

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Precious Plover answered on September 21, 2020 Popularity 10/10 Helpfulness 2/10

answer typing in typescript

related typescript type definition

related make a type in typescript

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typing in typescript

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var name: string = "Anna";
let notes: (number | string)[] = ["Get Food", 23, "Call the previous number when betting"];

Popularity 10/10 Helpfulness 2/10 Language typescript

Source: Grepper

Tags: typescript typing

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Contributed on Sep 21 2020

Precious Plover

0 Answers Avg Quality 2/10

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typescript type definition

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// cannot use object for type defination because this is not recommended
// use Record<string, any> this same with object

const name: string = "john doe"
const age: number = 30

const days1: string[] = ["sunday","monday","thuesday","wenesday"]
const numb1: number[] = [1,2,3,4,5]

const days2: Array<string> = ["sunday","monday","thuesday","wenesday"]
const numb2: Array<number> = [1,2,3,4,5]

const person: Record<string, any> = {
	name: "john doe",
	age: 30
}

async function name(): Promise<string> {
	return "john doe"
}

name().then(console.log)

async function str(): Promise<string[]> {
	return ["sunday","monday","thuesday","wenesday"]
}

str().then(console.log)

async function int(): Promise<int[]> {
	return [1,2,3,4,5]
}

int().then(console.log)

async function objectValue(): Promise<Record<string, any>> {
	const person: Record<string, any> = {
	 name: "john doe",
	 age: 30
	}
  return person
}

objectValue().then(console.log)

async function objectValueMulti(): Promise<Record<string, any>[]> {
	const person: Record<string, any>[] = [{
	 name: "john doe",
	 age: 30
	},{
	 name: "jane doe",
	 age: 30
	}]
  return person
}

objectValueMulti().then(console.log)

Popularity 10/10 Helpfulness 3/10 Language typescript

Source: Grepper

Tags: type-definition

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Contributed on Mar 12 2021

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

make a type in typescript

Comment

type Props = {
  item: CartItemType;
  addToCart: (clickedItem: CartItemType) => void;
  removeFromCart: (id: number) => void;
};

Popularity 10/10 Helpfulness 2/10 Language typescript

Source: Grepper

Tags: typescript t

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Contributed on Sep 06 2021

brown eye gands

0 Answers Avg Quality 2/10

type in typescript

Comment

    function identity<Type>(arg: Type): Type {
      return arg;
    }


let fun = identity<string>("hello world");
console.log(fun);   
/*think of this as you can specify the type later*/
/*Directly specifying version of the above would be something like
    function identity(arg: string): string {
      return arg;
    }


let fun = identity("hello world");
console.log(fun);   

*/

Popularity 10/10 Helpfulness 1/10 Language typescript

Source: Grepper

Tags: typescript t

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Contributed on Jul 19 2022

Javasper

0 Answers Avg Quality 2/10

typing in typescript

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