* Re: Python syntax in Lisp and Scheme
@ 2012-12-02 9:37 WJ
0 siblings, 0 replies; only message in thread
From: WJ @ 2012-12-02 9:37 UTC (permalink / raw)
To: help-gnu-emacs
Re: Python syntax in Lisp and Scheme
Frode Vatvedt Fjeld wrote:
> > Scheme
> > (define vector-fill!
> > (lambda (v x)
> > (let ((n (vector-length v)))
> > (do ((i 0 (+ i 1)))
> > ((= i n))
> > (vector-set! v i x)))))
> >
> > Python
> > def vector_fill(v, x):
> > for i in range(len(v)):
> > v[i] = x
> >
> > To me the Python code is easier to read, and I can't possibly fathom
> > how somebody could think the Scheme code is easier to read. It truly
> > boggles my mind. [..]
>
> The scheme example can only have been written by someone who is on the
> outset determined to demonstrate that sexp-syntax is complicated. This
> is how I'd write it in Common Lisp:
>
> (defun vector-fill (v x)
> (dotimes (i (length v))
> (setf (aref v i) x)))
>
> As you can see, it matches the python example quite closely.
Racket:
(define vec (vector 2 3 4 5))
(vector-fill! vec 0)
vec
==> '#(0 0 0 0)
(vector-set*! vec 3 'a 2 'b)
vec
==> '#(0 0 b a)
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2012-12-02 9:37 Python syntax in Lisp and Scheme WJ
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