| https://www.aliexpress.com/item/1005004239186340.html |
| destinations: | |
| # each key here uniquely identifies a destination. | |
| # Set its name, optionally set its latitude and longitude for automatic distance/traveltime/elevation gain generation | |
| # include a list of amenity icons to be included | |
| cvg: | |
| name: "Central Valley Greenway" | |
| bcit: | |
| name: "BCIT" | |
| latitude: 49.251691 | |
| longitude: -123.001931 |
| (ns gen | |
| (:require | |
| [cloroutine.core :refer [cr]] | |
| [criterium.core :as crit])) | |
| (deftype ^:private GenIter [;; The Cloroutine generator function | |
| ^:unsynchronized-mutable ^clojure.lang.IFn g | |
| ;; Trilean boolean logic: | |
| ;; 0 = certainly no more elements, `x` is nil | |
| ;; 1 = certainly there are more elemennts, and the next object is stored in `x` |
| // example 1: Channels | |
| (async () => { | |
| // make an unbuffered channel | |
| const c = chan(); | |
| // in separate 'thread', push 3 values into it | |
| (async () => { | |
| send(c, 'ping'); |
| LEGEND: | |
| * Suffixes: (Lhm = LinkedHashMap, Vm = VectorMap) | |
| * | |
| [info] Benchmark (size) Mode Cnt Score Error Units | |
| [info] VectorMapBenchmark.buildLhm 5 avgt 20 399.458 ± 4.206 ns/op | |
| [info] VectorMapBenchmark.buildLhm 10 avgt 20 764.065 ± 10.401 ns/op |
| // class List | |
| override def prependedAll[B >: A](prefix: collection.IterableOnce[B]): List[B] = prefix match { | |
| case xs: List[B] => xs ::: this | |
| case _ => | |
| val iter = prefix.iterator | |
| if (iter.hasNext) { | |
| val result = new ::[B](iter.next(), null) | |
| var curr = result | |
| while (iter.hasNext) { | |
| val temp = new ::[B](iter.next(), null) |
| [info] Benchmark (size) Mode Cnt Score Error Units | |
| [info] ListBenchmark.colonColonColon 0 avgt 20 2.576 ± 0.154 ns/op | |
| [info] ListBenchmark.colonColonColon:·gc.alloc.rate 0 avgt 20 0.001 ± 0.002 MB/sec | |
| [info] ListBenchmark.colonColonColon:·gc.alloc.rate.norm 0 avgt 20 ≈ 10⁻⁵ B/op | |
| [info] ListBenchmark.colonColonColon:·gc.count 0 avgt 20 ≈ 0 counts | |
| [info] ListBenchmark.colonColonColon 1 avgt 20 15.884 ± 1.988 ns/op | |
| [info] ListBenchmark.colonColonColon:·gc.alloc.rate 1 avgt 20 1622.694 ± 155.062 MB/sec | |
| [info] ListBenchmark.colonColonColon:·gc.alloc.rate.norm 1 avgt 20 40.000 ± 0.001 B/op | |
| [info] ListBenchmark.colonColonColon:·gc.churn.PS_Eden_S |
| package com.github.joshlemer | |
| import scala.collection.Factory | |
| import scala.collection.immutable._ | |
| package object clxn { | |
| implicit final class IterableObjectExtension(private val c: Iterable.type) extends AnyVal { | |
| def unsafeWrap[A](it: collection.Iterable[A]): Iterable[A] = it match { | |
| case xs: Iterable[A] => xs |
What’s new in 2.13
Release Notes https://github.com/scala/scala/releases/tag/v2.13.0-M1 https://github.com/scala/scala/releases/tag/v2.13.0-M2 https://github.com/scala/scala/releases/tag/v2.13.0-M3 https://github.com/scala/scala/releases/tag/v2.13.0-M4 https://github.com/scala/scala/releases/tag/v2.13.0-M5 https://github.com/scala/scala/releases/tag/v2.13.0-RC1
| calculateFast(file: File, size: Int, hashes: Iterator[ByteString], bitfield: BitVector) = { | |
| // zipping iterators together will mean that each element will allocate an additional instance of `Tuple2[Left, Right]` | |
| // you could get by with iterating through `file.bytes.grouped(size)` and `hashes` at the same time, avoiding | |
| // tuple allocations | |
| val iter = file.bytes.grouped(size).zip(hashes) | |
| val digest: MessageDigest = MessageDigest.getInstance("SHA-1") | |
| val buf = new Array[Byte](size) | |
| var bufIdx = 0 |
