tasksObj = {
toDos: new Array<Task>(),
inProgress: new Array<Task>(),
finished: new Array<Task>(),
}if(this.tasksObj.toDos.includes(task))
{
this.tasksObj.toDos.splice(task, 1, result)
}openAlertDialog(alertText: string)
{
this.dialog.open(AlertModalDialogComponent, {
data: { alertText: alertText }
});
}if(...)
this.openAlertDialog(alertText);