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Summaries are not the original full articles. ## The Complete Databricks Learning Roadmap for 2026 DevFeed: [The Complete Databricks Learning Roadmap for 2026]() Original publisher: [Read original article]() Author: Zach Wilson Published: 2026-08-14T20:11:45Z Content type: tutorial Language: en Sources: [DataExpert.io Newsletter]() Topics: [databricks](), [Learning]() Tags: [2026](), [databricks](), [learn](), [learning](), [master](), [skip]() ### AI overview A 2026 learning roadmap for Databricks covering what to learn, what to skip, and the recommended order for mastering the platform. ### Source excerpt What to learn, what to skip, and the right order to master Databricks. ## How to Stop or Skip Cypress Test Commands DevFeed: [How to Stop or Skip Cypress Test Commands]() Original publisher: [Read original article]() Author: Gleb Bahmutov Published: 2026-08-07T04:00:00Z Content type: tutorial Language: en Sources: [Gleb Bahmutov]() Topics: [Cypress](), [Mocha](), [test](), [Code]() Tags: [callback](), [command](), [commands](), [condition](), [cypress](), [object](), [products](), [skip](), [syntax](), [test](), [testing](), [tests]() ### AI overview This tutorial explains three ways to stop or skip Cypress test execution: using Cypress.stop, skipping the current Mocha test, and skipping the remaining commands in the Cypress command queue. It describes the trade-offs of each approach, including whether later tests run and whether completed commands remain visible. ### Source excerpt Let's say you have a long-ish Cypress test and you know a place where it might fail. You want to stop / skip the test commands. ## Flow testing with Turbine DevFeed: [Flow testing with Turbine]() Original publisher: [Read original article]() Author: Jake Wharton Published: 2023-06-21T00:00:00Z Content type: tutorial Language: en Sources: [Jake Wharton]() Topics: [Testing](), [Coroutines](), [Library](), [Kotlin](), [Kotlin Multiplatform]() Tags: [coroutines](), [kotlin](), [kotlin-multiplatform](), [library](), [multiplatform](), [skip](), [suspend](), [test](), [testing](), [timeout]() ### AI overview Cash App introduces Turbine 1.0, a library for testing Kotlin kotlinx.coroutines Flow by converting push-based streams into pull-based suspend functions. Turbine suspends while waiting for events and fails tests when unexpected events or timeouts occur. It also supports error handling, skipping items, cancellation, standalone adapters for callbacks, and utilities for testing multiple streams. ### Source excerpt This post was published externally on Cash App Code Blog. Read it at https://code.cash.app/flow-testing-with-turbine. ## Performance in Jetpack Compose DevFeed: [Performance in Jetpack Compose]() Original publisher: [Read original article]() Author: Denys Rudenko Published: 2022-10-03T16:41:03Z Content type: tutorial Language: en Sources: [Stories by Denis Rudenko on Medium]() Topics: [Jetpack Compose](), [ui](), [Code]() Tags: [android](), [android-app-development](), [article](), [compiler](), [compose](), [false-positive](), [jetpack-compose](), [lambda](), [modifiers](), [performance](), [recomposition](), [scopes](), [skip](), [ui](), [val](), [var](), [variables]() ### AI overview A practical guide to improving Jetpack Compose performance through stable parameters, skippable composables, optimized recompositions, remembered lambdas, and compiler and layout-inspector metrics. ### Source excerpt Article tells about my research on how to write efficient Compose code. It consists of 6 sections and a TL;DR/Summary in the end. We will cover: Optimising recompositions When should you use @Immutable and @Stable annotations; Unstable classes, variables, lambdas; Non-restartable & skippable composables; Lambda modifiers; Passing lambdas providing required fields instead of fields in composables; Inlined composables; When you should use remember { }. We'll be using Compose Compiler Metrics and layout inspector tools to know: - If a class is stable or not; - If the composable function is skippable/restartable; - Amount of skipped recompositions. 1. Unstable objects on UI layer. To understand why we should care about stability, let us peek into a very important metric called skippability. It allows compose runtime to skip recomposition of a composable when all the parameters it uses are considered stable. What is considered stable by the compiler? - All primitive value types: Boolean, Int, Long, Float, Char, etc. - Strings - Lambdas (not always, we will get to it later) We want composable functions to use stable params to become skippable. 1) Don't use var when seeking stability. Fields declared as var are considered unstable: https://medium.com/media/724da23ba38eaa9d3312318e7e8038b9/hrefhttps://medium.com/media/f8dd8a39bce60e48b5ff8bdd4a02b9ef/href UserDetails composable will be recomposed even if the user never gets modified. Using val instead of var in User class will fix this issue. 2) Not all lambdas are considered stable. Let's look at the following examples: https://medium.com/media/fbbff417d165a501b21a3e5d2c6f087f/hrefhttps://medium.com/media/c6aaae01fda67c633edcdf7bb351e620/href Since the lambdas capture outside scopes, they won't be automatically inferred as stable and reused as expected. If the lambda requires access to external variables, the compiler will add those variables as fields, which are passed into the constructor of the lambda. We go a 2 ways of ## Experimental ClickHouse®: Projections DevFeed: [Experimental ClickHouse®: Projections]() Original publisher: [Read original article]() Author: Raul Marín Published: 2021-07-09T00:00:00Z Content type: article Language: en Sources: [Tinybird]() Topics: [clickhouse]() Tags: [clickhouse](), [experimental](), [performance](), [skip](), [teams](), [the-data-base]() ### AI overview This article discusses ClickHouse projections and states that, when used correctly, they can improve query performance by up to 10x. It also notes that most teams skip using them. ### Source excerpt Projections in ClickHouse can 10x query performance when used correctly. Most teams skip them. Don't make that mistake. ## Rails Test Basics DevFeed: [Rails Test Basics]() Original publisher: [Read original article]() Author: Fuzzygroup Published: 2020-01-27T00:00:00Z Content type: tutorial Language: en Sources: [Scott Johnson]() Topics: [Rails](), [Testing](), [RSpec](), [Development]() Tags: [dockerignore-usage](), [errors](), [factorybot](), [rails](), [rspec](), [skip](), [test](), [testing](), [tests]() ### AI overview A practical guide to classical Rails testing for a project using standard Rails tests instead of RSpec. It covers debugging with byebug, skipping tests, running tests with Rails commands, interpreting a confusing zero-test result, using FactoryBot, and writing assertions. ### Source excerpt More than a decade using RSpec has left me flummoxed in terms of "classical" Rails testing. I'm on a new project built using the Jumpstart application template and all the tests are standard Rails tests so here's a quick recap that I wrote, well, to force myself to step back in time and go "old school". And if you don't like my version then you should really read this. And if you are using Devise for authentication then you really must read this. Making Tests Debuggable The ability to use byebug in a testing context for breakpoints and stepping through code is utterly invaluable. Here's what you need to do for that: Add byebug into a development, test group in Gemfile. Add the line require 'byebug' to the very top of test_helper.rb How Do You Skip a Test? You put the keyword 'skip' at the top of the test that you need to skip. This is equivalent to xit in RSpec. Running Tests The very basic of testing is nothing more than test execution so to run all model tests: rails test test/models/ and to run one file rails test test/models/user_test.rb and to run everything: rails test and to run with verbose mode: rails test -v test/models and to run verbosely and fail on the first test failure: rails test -v -f test/helpers/application_helper.rb and to run just one specific test: rails test test/controllers/labels_controller_test.rb:9 Note: RSpec is very good at running the next test if the line number shifts a bit (example you put in :8 but you added a line so its actually :9). With standard rails test, you get this madness: ❯ rails test test/controllers/projects_controller_test.rb:17 Running via Spring preloader in process 95090 Run options: --seed 52687 # Running: Finished in 0.010622s, 0.0000 runs/s, 0.0000 assertions/s. 0 runs, 0 assertions, 0 failures, 0 errors, 0 skips The 0 runs, 0 assertions, 0 failures, 0 errors, 0 skips can best be interpreted as: Yo! Hoser! I don't know what to do here so I'm going to confuse you deliberately. Ha Haw! Death to Fixtures; Viva La F ## Java 9 Flow API: taking and skipping DevFeed: [Java 9 Flow API: taking and skipping]() Original publisher: [Read original article]() Author: David Karnok (noreply@blogger.com) Published: 2017-09-30T20:44:00Z Content type: tutorial Language: en Sources: [Akarnokd - Advanced RxJava]() Topics: [Java 9](), [API](), [reactive]() Tags: [api](), [flow](), [flow-api](), [implementation](), [java-9](), [jdk](), [publisher](), [reactive](), [reactive-streams](), [skip](), [skipwhile](), [streams](), [subscriber](), [subscription](), [take](), [takeuntil](), [takewhile]() ### AI overview A tutorial on implementing take and skip-style operators with Java 9's Flow API. It explains how to limit a flow, cancel the upstream subscription when the limit is reached, complete the downstream subscriber, handle terminal events, and account for backpressure behavior. ### Source excerpt Introduction Limiting or skipping over parts of a flow is a very common task: either we are only interested in the first N items or we don't care about the first N items. Sometimes, N is unknown but we can decide, based on the current item, when to stop relaying items or, in contrast, when to start relaying items. Take(N) In concept, limiting a flow to a certain size should be straightforward: count the number of items received via onNext and when the limit is reached, issue a cancel() towards the upstream and onComplete() towards the downstream. public static Flow.Publisher take(Flow.Publisher source, long n) { return new TakePublisher<>(source, n); } The operator's implementation requires little state: static final class TakeSubscriber implements Flow.Subscriber { final Flow.Subscriber downstream; Flow.Subscription upstream; long remaining; TakeSubscriber( Flow.Subscriber downstream, long n) { this.downstream = downstream; this.remaining = n; } @Override public void onSubscribe(Flow.Subscription s) { // TODO implement } @Override public void onNext(T item) { // TODO implement } @Override public void onError(Throwable throwable) { // TODO implement } @Override public void onComplete() { // TODO implement } } In its simplest form, there is no need for intercepting the request() and cancel() calls from the downstream: these can be passthrought, however, since the operator has to stop the sequence upon reaching the limit (remaining == 0), the upstream's Flow.Subscriber has to be stored. @Override public void onSubscribe(Flow.Subscription s) { this.upstream = s; downstream.onSubscribe(s); } In onSubscribe, we only have to store the Flow.Subscription and forward it to the downstream. @Override public void onNext(T item) { long r = remaining; if (r > 0L) { remaining = --r; downstream.onNext(item); if (r == 0) { upstream.cancel(); downstream.onComplete(); } } } While remaining is positive, we decrement it and save it into its field foll ## Release 1.2.0 and GUI release 0.5.0 DevFeed: [Release 1.2.0 and GUI release 0.5.0]() Original publisher: [Read original article]() Published: 2015-11-24T00:00:00Z Content type: release Language: en Sources: [Mozilla Automation]() Topics: [Command-line interface](), [GUI](), [releases]() Tags: [ascii](), [bug](), [command-line](), [feature](), [gui](), [improvements](), [launch](), [parameter](), [profile](), [release](), [skip]() ### AI overview The mozregression 1.2.0 command-line release and GUI 0.5.0 release add build ID and release-number selection, introduce the -P/--process-output parameter, improve command-line output, and fix several command-line and GUI bugs. ### Source excerpt Minor releases of the command line and GUI mozregression tools. On the command line side: new feature, you can now use a buildid instead of a date when doing the bisection or running a single build (bug 1217906): mozregression --launch 20151102030241 added a new parameter to control the tested binary output, -P/--process-output (bug 1214386) a few improvements for the general output (bug 1225755, bug 1225548 and bug 1227134) fixed a bug in the back command, when it was used after a skip (bug 1203855) On the GUI side: allow to choose a buildid or a release number instead of a date (bug 1225437) fixed a bug that prevented to use a profile directory containing non-ascii characters (bug 1224083)