Hello Ritchie!
I had almost the same:
(fn [& fs]
(let [f (last fs)
r (rest (reverse fs))]
(fn [& data] (reduce #(%2 %) (apply f data) r
But then I really liked your destructuring, so I'll take it with me:
(fn [& fs]
(let [[f & r] (reverse fs)]
(fn [& data] (r
Here's a solution using reduce that handles passing multiple arguments into
the rightmost function:
(fn [& fns]
(fn [& args]
(let [[f & fns] (reverse fns)]
(reduce #(%2 %1) (apply f args) fns
On Sun, Aug 26, 2012 at 9:12 AM, Tyler Perkins wrote:
> It might help to simplify.
It might help to simplify. Whenever you're accumulating over a
sequence of things, think of reduce:
(let [__ (fn [& fs]
;; Here's the function:
(reduce #(fn [x] (%1 (%2 x))) fs))
]
;; Testing:
[ (= 5 ((__ (partial + 3) second) [1 2 3 4]))
(= [3 2 1
OK, I think I'm starting to get it now - the idea is a function that
accepts x & xs , which are functions, and returns a function which has
a var-args arity [& args], which is the composition of the xs.
Thanks to all for the replies - I still haven't looked at the source
to comp but it will be fun
Thanks to a for the replies. I will study them later when I am free.
On Aug 25, 2012 2:37 PM, "nicolas.o...@gmail.com"
wrote:
>
> Here's my take:
>
> We want to define a function my-comp. It takes n functions and return
> their composition.
> We want to return a function of any number of argum
Here's my take:
We want to define a function my-comp. It takes n functions and return
their composition.
We want to return a function of any number of arguments, so let's
start by working with a given
set of argument args, and returning the value of the composition
applied to those arguments.
- I
On Sat, Aug 25, 2012 at 6:47 PM, John Holland wrote:
> This problem is really confusing me. I found a solution online, but I
> can't understand the solution. Can anyone explain to me why this
> works?
>
> The problem is stated as:
>
>
>
> Write a function which allows you to create function compo
Thanks for the link. I didnt notice the problem number in the URL. I've
sorted the problems and lost the default order.
Thanks again
Erlis
On Sat, Aug 25, 2012 at 1:29 PM, Mayank Jain wrote:
> On Sat, Aug 25, 2012 at 10:54 PM, Erlis Vidal wrote:
>
>> How can I find the problem # 58?
>>
>
> http
On Sat, Aug 25, 2012 at 10:54 PM, Erlis Vidal wrote:
> How can I find the problem # 58?
>
http://www.4clojure.com/problem/58
Just modify the parameter to the problem number you want to see.
> This is something I was looking right now. What's the best order to
> follow?
Start with the first p
How can I find the problem # 58?
This is something I was looking right now. What's the best order to follow?
I know I can sort by complexity but I think there should be a better way to
sort them.
Thanks
On Sat, Aug 25, 2012 at 1:05 PM, Bronsa wrote:
> its*
>
>
> 2012/8/25 Bronsa
>
>> check ou
its*
2012/8/25 Bronsa
> check out clojure.core/comp, and it's source
>
>
> 2012/8/25 John Holland
>
>> This problem is really confusing me. I found a solution online, but I
>> can't understand the solution. Can anyone explain to me why this
>> works?
>>
>> The problem is stated as:
>>
>>
>>
>>
check out clojure.core/comp, and it's source
2012/8/25 John Holland
> This problem is really confusing me. I found a solution online, but I
> can't understand the solution. Can anyone explain to me why this
> works?
>
> The problem is stated as:
>
>
>
> Write a function which allows you to creat
This problem is really confusing me. I found a solution online, but I
can't understand the solution. Can anyone explain to me why this
works?
The problem is stated as:
Write a function which allows you to create function compositions. The
parameter list should take a variable number of function
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