import ObjectUtil from "./ObjectUtil";

export class ArrayUtil{
    public static uniqueArray(a:any){
        let seen:any = {};
        let out = [];
        let len = a.length;
        let j = 0;
        for(let i=0; i<len; i++) {
            let item = a[i];
            if(seen[item] !== 1) {
                seen[item] = 1;
                out[j++] = item;
            }
        }
        return out;
    }

    public static isArray(variable:any) {
        return ObjectUtil.isObject(variable) && variable.hasOwnProperty('length');
    }
}