You're right in that the error should be shown in context. We'll think about
it, and thanks for bring it up -- Matthias
On Oct 3, 2014, at 11:00 PM, Alexander McLin wrote:
> Making a correction here, my wish error message should say this.
>
> in: the 1st argument of
>(->*
>
Making a correction here, my wish error message should say this.
* in: the 1st argument of*
* (->**
*((and/c number? (between/c 0 1)))*
*(#:clamp-range boolean?)*
*number?)*
Because I understand that the phrase *"the range of"* means the last item
in the -> form whic
Actually I wasn't quite ready to move on.
When I apply (curve 3) where (define curve (cubic-bezier a b) a and b are
bezier-control-point?
I get the following contract error:
---
*(curve 3)*
*. . cubic-bezier: contract violat
Good evening Mathias,
After studying your program and mine, and running various permutations, I
understand where I was going wrong. It appears that while doing manual
experimentation I had gotten confused to which module I was actually in the
REPL when calling various functions by hand. Also my te
If you use this as the program:
#lang racket
;; contracts set up boundaries between two regions of a program, say two
modules
;;
---
;; the library
(provide (contract-out
[struct bezi
Spencer, I'm calling cubic-bezier from within a (module+ test (require
submod "..")...) form that itself is defined in the file where cubic-bezier
is defined. Also I tried from within REPL and requiring the code file.
Matthias,
I ran your example and it works exactly the way I wanted. The lambda
Let's make Spencer's question concrete. Say we have this situation:
#lang racket
;; contracts set up boundaries between two regions of a program, say two
modules
;;
---
;; the library
(module se
Where are you calling `cubic-bezier` from? If its from the REPL, the module
itself, or a submodule the function won’t have a contract attached. Only code
outside `cubic-bezier`s module will have the version of `cubic-bezier` with a
contract attached.
On Wed, Oct 1, 2014 at 9:46 PM, Alexander Mc
Hello,
I've been working on a sample project to better understand how to use the
contract system. I created a simple Bezier curve implementation and am
using (provide (contract-out...) to attach contracts to the provided
bindings.
Basically I have a procedure called cubic-bezier that accepts two
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