fuild-let example
ref http://karetta.jp/book-node/gauche-hacks/014781
#lang racket (define x 200) (define (test) x) (test) ;=>200 (let ((x 50)) (test)) ;=>200 (require mzscheme) (fluid-let ((x 50)) (test)) ;=>50
ref http://karetta.jp/book-node/gauche-hacks/014781
#lang racket (define x 200) (define (test) x) (test) ;=>200 (let ((x 50)) (test)) ;=>200 (require mzscheme) (fluid-let ((x 50)) (test)) ;=>50