public date_et_heure(): string {
		return this._annee + '/' + this._mois + '/' + this._jour + ' ' + this._heure + 'h' + this._minute;
	}

	public set_date(a: number, m: number, j: number, h: number, mm: number): void {
		this._annee = a;
		this._mois = m;
		this._jour = j;
		this._heure = h;
		this._minute = mm;
	}

	public compare(date: DateEtHeure): boolean {
//console.log("comparaison annee"+this._annee+"<"+date._annee);
		if (this._annee < date._annee) return true;
		if (this._annee > date._annee) return false;
//console.log("comparaison mois");
		if (this._mois < date._mois) return true;
		if (this._mois > date._mois) return false;
//console.log("comparaison jour");
		if (this._jour < date._jour) return true;
		if (this._jour > date._jour) return false;
//console.log("comparaison heure");
		if (this._heure < date._heure) return true;
		if (this._heure > date._heure) return false;
//console.log("comparaison minute");
		if (this._minute < date._minute) return true;
		if (this._minute > date._minute) return false;

		return false;
	}
}

let actuel: DateEtHeure = new DateEtHeure();
console.log(actuel.date_et_heure());

let test: DateEtHeure = new DateEtHeure();
test.set_date(2019, 9, 24 ,11, 27);
console.log(test.date_et_heure());

console.log(actuel.compare(test));