In JVM Clojure, Exceptions are for operating errors ("something went wrong") and Assertions are for programmer and correctness errors ("this program is wrong").
An assert might be the right tool if throwing an Exception isn't enough. Use
them when the assertion failing means
| (ns flexi-clock | |
| (:import (java.time Clock Duration Instant ZonedDateTime))) | |
| (defn clock | |
| "potential library function (e.g. in tick or tempo). | |
| This just implements the platform Clock - which works because non-test code only uses that API. | |
| Any manipulation of time (which happens in testing code) is done via changing | |
| what get-instant and get-zone return" | |
| [get-instant get-zone] |
This is a simple demo of how latest Bun could've implemented .as(Class) instead of using the quite jurassic Object.create which is slow, bloated due descriptors logic, if used at all, and incapable to play nicely with features introduced after Object.create was even specified.
// what `as(Class)` should return
const { assign } = Object;
const asClass = new WeakMap;
const setAsClass = Class => {
class As extends Class {
constructor(fields) {
assign(super(), fields);
FlowStorm is a time-travelling debugger for clojure.
IMO, Clojure has the best development experience with its REPL-driven workflow. FlowStorm makes it even better.
Most notably:
tap> destination
| (ns jst | |
| (:require [camel-snake-kebab.core :as csk] | |
| [clojure.string :as string] | |
| [hyperfiddle.rcf :refer [tests]])) | |
| (hyperfiddle.rcf/enable!) | |
| ;; Implements a hiccup compiler into js-template. | |
| ;; | |
| ;; Usage: (jst cljs-symbol? template-fn? hiccup), where: | |
| ;; cljs-symbol - what symbol implements js-template in cljs (default: shadow.cljs.modern/js-template) |
Electric Clojure implements a form of arrowized continuous time dataflow programming with extensions for network-transparent function composition.
| ; | |
| ; Copyright © 2023 Peter Monks | |
| ; | |
| ; This Source Code Form is subject to the terms of the Mozilla Public | |
| ; License, v. 2.0. If a copy of the MPL was not distributed with this | |
| ; file, You can obtain one at https://mozilla.org/MPL/2.0/. | |
| ; | |
| ; SPDX-License-Identifier: MPL-2.0 | |
| ; |
If you are using this already, consider changes soon due the discussion around current ESX proposal.
Feel free to keep an eye on udomsay as that will be the implementation reference for consumers.
| (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` |
