clojure-europe 2022-04-20

Morning!

Morning

☀️ ☕

I like cheatsheets and nutshell books b/c it reminds me of things I've forgotten or shows me things I'd not noticed the first time: https://clojure.org/api/cheatsheet

🧠 1

ray09:04:01

I took a quick look and discovered memfn which has been there since the primordial soup of 1.0. Who knew?

simongray11:04:12

@raymcdermott TIL! Seems very useful, but I’ve probably forgotten about it by the time I need to write Java interop code 😛

😂 1

otfrom07:04:11

dedupe being today's example

otfrom07:04:42

but good to know it is distinct from distinct

😂 5

simongray11:04:44

in cases where duplicates are always consecutive it is performant, but how often do you only need that??? kind regards, someone who once introduced a bug because of dedupe

simongray11:04:07

I guess if you want to produce random results it can make sense to use dedupe to clean the output up…

Good morning

mogge

Madainn mhath

Morning!

Eey Up

Good morning! 🙂

good morning

I hope everyone has had a nice Easter holiday

simongray09:04:16

I didn’t write any code for a whole week!

🙀 1

ray10:04:04

not really related to @otfrom’s good advice but just stumbled over requiring-resolve which was added in 1.10

ray10:04:22

I changed some ugly code from this

(ns-resolve (do (require 'some-ns)
				(the-ns 'some-ns)) 'some-var)

ray10:04:25

to this

ray10:04:42

(requiring-resolve (symbol (str var-ns "/" var)))

ray10:04:22

[ for resolving functions from data definitions ]

ray10:04:40

Is there a better way?

simongray11:04:49

@raymcdermott There is also a 2-arity version of symbol , i.e. (symbol var-ns var) , although for some stupid reason it requires both args to be strings whereas the other version does not.

pez11:04:57

Sure the reason is stupid? 😃

simongray11:04:21

yeah

simongray11:04:24

🙂

simongray11:04:03

I looked at the source code

ray12:04:33

so it's (str var-ns) (str var) vs (str var-ns "/" var) . Maybe the former is slightly more elegant.

2022-04-20

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