Could someone explain why the first doesn't work and the 2nd does?
(let [{:keys [opt1]} [:opt1 true]] [opt1]) ==> [nil]
(let [{:keys [opt1]} '(:opt1 true)] [opt1]) ==> [true]
According to http://clojure.org/guides/destructuring
"Associative destructuring also works with lists of key-value pair
*Please make stest/instrument check :ret too, not only :args.*
I have been experimenting a lot with spec during December, and I really
like it. On the downside, the syntax is very verbose, compared to prismatic
schema. However, reuse is much simpler than for schemas.
I disagree with this decisi
I defined my own defn in the namespace mwm.
My new code looks like this
(mwm/defn foo [x] ...)
Everything was fine as long as it was called defn2, but after renaming it
to defn and refering to the original defn using clojure.core/defn, only
"lein uberjar" works.
When I run "lein run", th
I moved my own definition of defn to a separate project, and then it works.
It seems you cannot redefine defn within the same project it is used.
Den fredag 13 november 2015 kl. 13:46:56 UTC+1 skrev mattias w:
>
> I defined my own defn in the namespace mwm.
>
>
> My new code
Clojure and Erlang are very similar, except for the syntax, macros and that
you can use Java libraries.
There is one big difference: In Erlang, fail as early as possible is the
norm. In Clojure it is almost the opposite.
Many errors in Clojure code will result in nil, and most operations acce
With clojure 1.8, we got many of these functions, but not str/length and
str/substring.
What am I missing?
/mattias
Den fredag 1 november 2013 kl. 19:40:42 UTC+1 skrev Sean Corfield:
>
> This thread made me run a quick audit of our code and we had about a
> dozen calls to .length, a dozen cal
