Casting

Cast  allows to transform any object to class instance with all of the class functionalities including static methods and properties.
Usage
Interface
cast(classType, data, applyConstructor:boolean = false)
classInstance - The typeof class we want to cast to.
data -  The data should be cast.
applyConstructor - identify if constructor method should apply (default is false)
​
Using cast can be done in two ways:
Without applying the class constructor
In that case the data will cast into class instance but constructor method will not apply, which means auto populated properties won't initialize.
Example
post.class.ts
1
export class Post{
2
    title: string;
3
    body: string;
4
    creation: string = "11/11";
5
    owner: string;
6
​
7
    constructor(owner:string){
8
        this.owner = owner;
9
    }
    print(){
10
        console.log(`${this.title} - ${this.body} - ${creation}`);
11
    }
12
}
Copied!
main.ts
1
import { cast } from "@sugoi/core";
2
​
3
const casted = cast(Post,{title:"wow",body:"Much body"});
4
// in that case creation and owner won't initialize
5
casted.print(); => "wow - Much body - undefined"
Copied!
With applying the class constructor
In that case the data will cast into class instance and constructor method will apply, which means auto populated properties will initialize.
Example
post.class.ts
1
export class Post{
2
    title: string;
3
    body: string;
4
    creation: string = "11/11";
5
    owner: string;
6
​
7
    constructor(owner:string){
8
        this.owner = owner;
9
    }
    print(){
10
        console.log(`${this.title} - ${this.body} - ${creation}`);
11
    }
12
}
Copied!
main.ts
1
import { cast } from "@sugoi/core";
2
​
3
const casted = cast(Post,{title:"wow",body:"Much body"});
4
// in that case creation and owner won't initialize
5
casted.print(); => "wow - Much body - 11/11"
Copied!
​

@sugoi/core - Previous

Exception

Next - @sugoi/core

@Catch - error handling

Last modified 3yr ago

Copy link

Contents

Usage

Interface

Without applying the class constructor

With applying the class constructor