#lang plait
(define-syntax-rule (let1 (var expr) body)
(let ([var expr]) body))
{let1 {x 1}
{let1 {y 2}
{let1 {x 3}
{+ x y}}}}
#lang plait
(define-syntax-rule (let1 (var expr) body)
(let ([var expr]) body))
{let1 {x 1}
{let1 {y 2}
{let1 {x 3}
{+ x y}}}}