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Serhii Kozachenko SerhiiKozachenko

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Principal Engineer, Functional Programming, Clojure, DotNet, Rust.

lnostdal / upmap.clj

Last active July 13, 2024 16:58

Clojure unordered concurrency test: MAP vs. PMAP vs. UPMAP

	;; www.Quanto.ga
	;;
	;; cp/upmap is from https://github.com/TheClimateCorporation/claypoole


	quantataraxia.core> (do
	(println "MAP:")
	(println (time (doall (map (fn [x] (Thread/sleep x) x)
	(range 500 50 -9)))))
	(println "PMAP:")

lnostdal / fast_local_mutation.clj

Last active July 13, 2024 16:58

Clojure: Performance of with-local-vars vs. atom vs. volatile vs. unsynchronized-mutable field

	;; Performance of with-local-vars vs. atom vs. volatile vs. unsynchronized-mutable field.


	(definterface IOObject
	(setVal [new-val])
	(getVal [])
	(oswap [f])
	(oswap [f x])
	(oswap [f x y])
	(oswap [f x y z]))

lnostdal / async_&_transducers.clj

Created May 18, 2018 07:50

how to use transducer with clojure.core.async

	;; I keep forgetting how to do this stuff for some reason, so here goes:

	(let [c (async/chan 1 (map #(* % 2)))]
	(async/go
	(loop []
	(when-let [e (async/<! c)]
	(println "async/go, e:" e)
	(recur))))
	(async/>!! c 1)
	(async/>!! c 2))

lnostdal / future_cancellation.clj

Created May 2, 2018 17:18

	(let [f (future
	(try
	(Thread/sleep 10000)
	(catch Throwable e
	(println e)
	(println "isInterrupted:" (.isInterrupted (Thread/currentThread)))
	(println "isAlive:" (.isAlive (Thread/currentThread)))
	(println "interrupted:" (Thread/interrupted)))))]
	(Thread/sleep 500)
	(future-cancel f)

lnostdal / cachebuilder.clj

Last active July 14, 2024 14:21

Guava: CacheBuilder / CacheLoader for compute cache type thing and similar

	;; This stuff is pretty useful in many contexts.

	...
	(:import (com.google.common.cache CacheBuilder CacheLoader))
	...



	quantataraxia.core> (with (-> (CacheBuilder/newBuilder)
	(.weakKeys)

coolaj86 / how-to-publish-to-npm.md

Last active November 9, 2025 00:12

How to publish packages to NPM

Getting Started with NPM (as a developer)

As easy as 1, 2, 3!

Updated: