The full error message is (when I look at the heroku logs)
Exception in thread "main" clojure.lang.ExceptionInfo: Error in component
:listener in system com.stuartsierra.component.SystemMap calling
#'com.stuartsierra.component/start {:reason
:com.stuartsierra.component/component-function-threw-
I am trying to start my clojure application on my heroku dyno but I keep
getting and error in my stuartsierra.component/start.
Below is my core file containing my main function.
(defrecord Listener [listener]
component/Lifecycle
(start [component]
(assoc component :listener (yada/listene
I am researching how to use graphql in clojure and it all seems to make
sense, and I can follow the Demo Project, except for the resolver-fn
In https://github.com/tendant/graphql-clj the resolver function is defined
to be
(defn resolver-fn [type-name field-name]
(cond
(and (= "Que
I have
(def data {:headers ["A" "B" "C" "D"]
:rows [["1" "2" "3" "4"] ["5" "6" "7" "8"] ["9" "10" "11"
"12"]]})
And I have a function
(defn replace-value [struct]
(clojure.walk/prewalk-replace {"3" "hello"} (struct :rows)))
When I do
(replace-value @data) > [["1" "2" "hello
Hello,
I have recently watched Rich Hickeys talk at Cojure Conj 2016
(https://www.youtube.com/watch?v=oyLBGkS5ICk - here's the link in case
anyone missed it) and although it was very interesting, I didn't really
understand the point in Clojure.Spec or when you'd use it. It seemed like
most of
Is there a way to generalise?
I.e a function that allows you to swap any of the 1-9?
On Wednesday, 7 December 2016 18:06:19 UTC, Andy- wrote:
>
> One option is to use keep-indexed:
>
> (first
> (keep-indexed
> (fn [i xs]
> (first
> (keep-indexed
> (fn [j x]
>
If I have
(def players [["1" "2" "3"] ["4" "5" "6"] ["7" "8" "9"]])
How would I get the index of number 5? I think it should be [1 1] but don't
know how to get this
If it were more simple such as
(def players ["1" "2" "3"])
I can get the index using
(.indexOf players "2") > 1
ither of those will give
> you your result.
>
> On 30 November 2016 at 10:34, Colin Yates > wrote:
> > Ah, I just realised people is _not_ a sequence of maps but the result
> > of calling '{:name "John" :age "25"}' passing in the other two maps
I have a definition:
(def class1 {:people ({:name "John" :age "25"}
{:name "Harry" :age "23"}
{:name "Peter" :age "24"})})
The result I want is a vector that looks like
[["John" "25"]
["Harry" "23"]
["Peter" "24"]]
If I call
.
>
>
> 2016-11-22 11:42 GMT+01:00 'Rickesh Bedia' via Clojure
> >:
> > Lets say I have:
> > (def human {:firstname "John" :surname "Smith"})
> > To get the firstname I would run (human :firstname) and this would give
> >
When I put @car into my table the value doesn't show?
On Wednesday, 23 November 2016 13:32:56 UTC, Alex Miller wrote:
>
> In what way does it not work?
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(defonce car (atom ""))
(defn car-colour [ ]
[:div
[:div.container
[:div.span12
[car-form car]]]
[:div.container
[:div.span12
"The car colour is: " @car]]
])
I have this function where you type in the make of a car and then this goes
to a database and returns the col
Lets say I have:
(def human {:firstname "John" :surname "Smith"})
To get the firstname I would run (human :firstname) and this would give
"John"
However if I now have
(def human2 {:name "Bob" :char {:eye-colour "brown" :hair-colour
"red"}})
how would I get the eye-colour? Would it be (h
I have this function:
(defn add1 [x]
(+ 1 x))
which is just a very simple function that adds 1.
I now want to create a new function called add2 that uses add1 twice.
I have tried
(defn add2 [x]
(add1 (add1 [x]))
but this doesn't work. (Can someone explain why this doesn't work. I think
it
Hi,
I am fairly new to Clojure, only been learning about it for a around 2
months. I have mainly been spending my time learning through "Clojure for
the Brave and True", Clojure Koans and 4Clojure. However, I have recently
been reading about Clojure's use in creating Web Apps. I have been
foll
Hi everyone,
I am new to Clojure and have been playing around with it for a little
while. I have seen that (get [3 2 1] 0) and ([[3 2 1] 0) both return the
value 3. Similarly (get {:a 0 :b 1} :b) and ({:a 0 :b 1} :b) return 1.
I was wondering if anyone could explain why the get function is usef
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