public virtual Expr Visit(ForeachExpr e)
{
var vV = (AccessorLetExpr)VisitExpr(e.Variable);
var gV = VisitExpr(e.Generator);
var cV = VisitExpr(e.Code);
return(vV == e.Variable && gV == e.Generator && cV == e.Code ? e : new ForeachExpr(e.Location, vV, gV, cV));
}
public PExpr Visit(ForeachExpr e) => Run(new ForeachExprFrame(this, e));