Here's a single worked example you can paste. One domain, both languages, and an experiment he can run himself in ten minutes.
A payment attempt has exactly three outcomes:
- Succeeded — we have a transaction id.
- Declined — we have a reason code.
Disclaimer: I use Scala since 2012 and am author of doobie-typesafe and yantl libraries and a contributor to Laminar and Mill build tool. This is also generated by GPT 5 with a prompt tailored from my instructions and reviewed by me.
Short answer: given what you already do (C#, TypeScript, Rust, React, .NET/Express/Axum), I’d seriously pick Scala 3 as your “functional programming language,” not Haskell/Elm/PureScript, and lean on the modern FP ecosystem on top of it.
You get:
| #!/bin/bash | |
| # --- Parallel Rate Limit Tester (v11 - Preserve Exit Status) --- | |
| # This version preserves the final progress line on exit, ensuring full | |
| # context is available for failures or user-initiated aborts (Ctrl+C). | |
| # --- Usage --- | |
| # ./rate_limit_tester.sh <URL> [parallel_requests] [max_requests] [min_delay_ms] | |
| # --- Dependencies --- |
Okay, let's trace the history of tech hype cycles, keeping in mind that while the term "Hype Cycle" was popularized by Gartner in 1995, the underlying pattern of excitement, disillusionment, and eventual productivity has existed for much longer.
Understanding the Gartner Hype Cycle Model (Briefly)
Before diving into history, it's helpful to remember the typical stages Gartner defined:
Okay, let's break down why this happens in Scala 3 (and largely in Scala 2 as well). The core reason lies in the distinction between name resolution and overloading resolution.
Name Resolution First: When the compiler encounters a name like normalMeth, its first job is to figure out what that name refers to in the current scope. It looks at:
Imports Bring Names:
import A.* brings the name normalMeth (which refers specifically to the method A.normalMeth) into the current scope.| package app.utils | |
| import app.data.{AppPushNotificationsState, PushNotificationData} | |
| import cats.Applicative | |
| import com.raquo.airstream.state.StrictSignal | |
| import framework.utils.JSLogger | |
| import retry.syntax.* | |
| import retry.{HandlerDecision, RetryPolicies} | |
| import typings.tauriAppsApi as tauri | |
| import typings.tauriAppsPluginProcess.tauriAppsPluginProcessRequire |
| /* | |
| * Decompiled with CFR 0.151. | |
| */ | |
| package cats.effect.resource_shared_memoized; | |
| import cats.effect.kernel.Resource; | |
| import java.io.Serializable; | |
| import scala.Function0; | |
| import scala.Function1; | |
| import scala.None$; |
| #!/usr/bin/env ruby | |
| # Run this file to generate `.kamal/secrets`. | |
| # List of secrets to generate | |
| # Either: | |
| # - String: the secret name | |
| # - Array: [secret_name, note_id] | |
| secrets = [ | |
| ["RAPIDRX_POSTGRESQL_PASSWORD", "RAPIDRX_DEV_POSTGRESQL_PASSWORD"], | |
| "RAPIDRX_KAMAL_REGISTRY_PASSWORD" |
| package app.prelude.utils | |
| import neotype.Newtype | |
| import io.scalaland.chimney.PartialTransformer | |
| import alleycats.Empty | |
| import app.prelude.Prelude.upickle_ | |
| import io.scalaland.chimney.partial.Result.Errors | |
| import io.scalaland.chimney.Transformer |
| package app.webclient_prelude.utils | |
| import com.raquo.airstream.core.Signal | |
| import com.raquo.airstream.split.SplittableSignal | |
| import com.raquo.airstream.state.Var | |
| /** Like [[Var.zoom]] but is not required to have an [[com.raquo.airstream.ownership.Owner]]. */ | |
| trait UpdatableSignal[A] { self => | |
| /** The [[Signal]] which is most likely mapped from a [[Var]]. */ |