On Dec 22, 2012, at 4:52 PM, Cristian Esquivias wrote:
> For example, I have a function that takes a filename and spits out a data
> structure. I wanted to create some unit tests and this mock the
> open-input-file function (with a open-input-string implementation).
>
> I originally thought pa
My original plan was to try to do some kind of mocking and unit testing in
racket.
For example, I have a function that takes a filename and spits out a data
structure. I wanted to create some unit tests and this mock the
open-input-file function (with a open-input-string implementation).
I origin
If you are working with functions in someone else's code, you are stuck
with their definition. When you write your own functions, however, you can
always design them as wrappers around parameters. For instance:
(define current-add-one (make-parameter add1))
(define (add-one x)
((current-add-o
> Is there anything that would prevent me from having to wrap functions in
> make-parameter calls? Something like Clojure's binding special form (if
> you're familiar with it).
I'm not a Clojure expert so please correct me if I'm wrong but it
seems like you have to jump through similar hoops in Cl
On Sat, Dec 22, 2012 at 3:23 AM, Cristian Esquivias
wrote:
> Is this the general practice? It looks rather cumbersome and difficult to
> plan for.
Are you wanting to change the behavior of some code that you don't
have the code for?
Racket Users list:
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On Dec 22, 2012, at 4:23 AM, Cristian Esquivias wrote:
> Is this the general practice? It looks rather cumbersome and difficult to
> plan for.
>
> Is there anything that would prevent me from having to wrap functions in
> make-parameter calls? Something like Clojure's binding special form (if
Is this the general practice? It looks rather cumbersome and difficult to
plan for.
Is there anything that would prevent me from having to wrap functions in
make-parameter calls? Something like Clojure's binding special form (if
you're familiar with it).
- Cristian
On Dec 21, 2012 6:45 PM, "David
On 12/21/12 9:41 PM, Cristian Esquivias wrote:
I'm trying to replace a function with another using parameterize.
For example, when I try:
(define (add2 n)
(add1 (add1 n)))
(parameterize ([add1 (λ [n] (+ n 2))])
(add2 2))
I get an error:
parameterize: contract violation
expected: p
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