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102 lines
1.9 KiB
Racket
102 lines
1.9 KiB
Racket
#lang s-exp javascriptlike-demo
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;;
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;;var x = 42;
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;(define x 42)
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(var x 42)
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;;var s = "string";
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;(define s "string")
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(var s "string")
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;;
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;;x + x;
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;(define (add/concat . xs)
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; (cond
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; [(andmap number? xs) (apply + xs)]
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; [(ormap string? xs) (string-join (map ~a xs) "")]))
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;(add/concat x x)
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(sumlike x x)
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;;s + x;
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;(add/concat s x)
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(sumlike s x)
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;;
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;;var thing = {
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;; 'foo' : 42,
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;;
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;; 'bar' : function(x) {
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;; return x + 15;
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;; }
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;;};
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;
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;(define thing (hash
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; "foo" 42
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; "bar" (λ (x) (let/ec return (return (add/concat x 15)) (void)))))
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;
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(object thing ("foo" 42) ("bar" (func (x) (return (sumlike x 15)))))
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;;thing.foo
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;;thing.bar
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;;thing.bar(3)
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;
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;(hash-ref thing "foo")
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;(hash-ref thing "bar")
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;(#%app (hash-ref thing "bar") 3)
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(dot thing "foo")
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(dot thing "bar")
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(func-app (dot thing "bar") 3)
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;
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;;
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;;if ( thing.foo == 42 ) {
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;; console.log("The correct answer is " + thing.foo);
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;;}
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;
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;(when (equal? (hash-ref thing "foo") 42)
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; (displayln (add/concat "The correct answer is " (hash-ref thing "foo"))))
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(object console ("log" (func (str) (pretty-print str))))
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(if (comparison (dot thing "foo") "==" 42)
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(func-app (dot console "log") (sumlike "The correct answer is " (dot thing "foo"))))
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;
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;;var idx = 0;
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;;while ( idx != 50 ) {
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;; if ( thing.bar(idx) == 35 ) {
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;; alert("Calamity at " + idx + "!");
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;; }
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;; idx++;
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;;}
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;
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;(define (alert str)
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; (displayln "*********")
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; (displayln str)
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; (displayln "*********"))
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;
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;(define idx 0)
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;(let loop ()
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; (when (not (equal? idx 50))
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; (when (equal? (#%app (hash-ref thing "bar") idx) 35)
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; (alert (add/concat "Calamity at " idx "!")))
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; (set! idx (add1 idx))
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; (loop)))
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(var idx 0)
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(while (comparison idx "!=" 50)
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(if (comparison (func-app (dot thing "bar") idx) "==" 35)
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(alert (sumlike "Calamity at " idx "!")))
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(increment idx)) |