generic.ts

/* utils
 * ©2022 LJM12914. https://github.com/wheelsmake/utils
 * Licensed under MIT License. https://github.com/wheelsmake/utils/blob/main/LICENSE
*/
import * as utils from "./index";
export function randoma2Z(length :number) :string{ //52
    var s :string = "";
    for(let i = 0; i < length; i++){
        let r = Math.floor(Math.random() * 52);
        if(r > 25) s += String.fromCharCode(r + 71);
        else s += String.fromCharCode(r + 65);
    }
    return s;
}
export function randoma2z029(length :number) :string{ //36
    var s :string = "";
    for(let i = 0; i < length; i++){
        let r = Math.floor(Math.random() * 36);
        if(r < 10) s += r;
        else s += String.fromCharCode(r + 87);
    }
    return s;
}
export function precisePop<T>(ele :T, array :any[]) :T | null{
    if(array.indexOf(ele) === -1) return null;
    return array.splice(array.indexOf(ele), 1)[0];
}
//递归冻结对象
export function constantize(obj :anyObject) :void{
    Object.freeze(obj);
    for(let i = 0; i < Object.keys(obj).length; i++) if(typeof obj[Object.keys(obj)[i]] == "object") constantize(obj[Object.keys(obj)[i]]);
}
export function E(argument :string, type? :string, value? :any, reason? :string) :never{
    if(argument === undefined) throw new Error("An error occured.");
    else{
        console.error("ERROR INFO: argument", argument, ",type", type, ",value", value, ",reason", reason); //为了拿到真正的value，其他类型toString后啥信息都没了
        throw new Error(`Argument '${argument}' ${type ? `should be a(an) ${type}` : "is invalid"}${reason ? `, reason: ${reason}` : ""}${value ? `, got ${value}` : ""}.`);
    }
}
export function EE(message :any) :never{throw new Error(message);}
export function repeat<T>(item :T, count :number) :T[]{
    if(typeof count != "number" || count < 1) utils.generic.E("count", "integer bigger than 0", count);
    return Array(count).fill(item, 0, count);
}
export function noRepeat<T>(input :T[]) :T[]{
    return Array.from(new Set(input)); //Set可是连IE11都支持的东西啊
}