| Angular CLI version | Angular version | Node.js version | TypeScript version | RxJS version | |
|---|---|---|---|---|---|
| ~16.0.0 | ~16.0.0 | ^16.13.0 || ^18.10.0 | >=4.9.5 <5.1.0 | ^6.5.5 || ^7.4.0 | |
| ~15.2.0 | ~15.2.0 | ^14.20.0 || ^16.13.0 || ^18.10.0 | >=4.8.4 <5.0.0 | ^6.5.5 || ^7.4.0 | |
| ~15.1.0 | ~15.1.0 | ^14.20.0 || ^16.13.0 || ^18.10.0 | >=4.8.4 <5.0.0 | ^6.5.5 || ^7.4.0 | |
| ~15.0.5 | ~15.0.4 | ^14.20.0 || ^16.13.0 || ^18.10.0 | ~4.8.4 | ^6.5.5 || ^7.4.0 | |
| ~14.3.0 | ~14.3.0 | ^14.15.0 || ^16.10.0 | >=4.6.4 <4.9.0 | ^6.5.5 || ^7.4.0 | |
| ~14.2.0 | ~14.2.0 | ^14.15.0 || ^16.10.0 | >=4.6.4 <4.9.0 | ^6.5.5 || ^7.4.0 | |
| ~14.1.3 | ~14.1.3 | ^14.15.0 || ^16.10.0 | >=4.6.4 <4.8.0 | ^6.5.5 || ^7.4.0 | |
| ~14.0.7 | ~14.0.7 | ^14.15.0 || ^16.10.0 | >=4.6.4 <4.8.0 | ^6.5.5 || ^7.4.0 | |
| ~13.3.0 | ~13.3.0 | ^12.20.2 || ^14.15.0 || ^16.10.0 | >=4.4.4 <4.7.0 | ^6.5.5 || ^7.4.0 |
Picking the right architecture = Picking the right battles + Managing trade-offs
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParentEMOJI CHEAT SHEET
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(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
| inputs = %w[ | |
| CollectionSelectInput | |
| DateTimeInput | |
| FileInput | |
| GroupedCollectionSelectInput | |
| NumericInput | |
| PasswordInput | |
| RangeInput | |
| StringInput | |
| TextInput |
| #app/inputs/collection_check_boxes_input.rb | |
| class CollectionCheckBoxesInput < SimpleForm::Inputs::CollectionCheckBoxesInput | |
| def item_wrapper_class | |
| "checkbox-inline" | |
| end | |
| end |
| # Here's a contrived example of a LEFT JOIN using ARel. This is an example of | |
| # the mechanics, not a real-world use case. | |
| # NOTE: In the gist comments, @ozydingo linked their general-purpose ActiveRecord | |
| # extension that works for any named association. That's what I really wanted! | |
| # Go use that! Go: https://gist.github.com/ozydingo/70de96ad57ab69003446 | |
| # == DEFINITIONS | |
| # - A Taxi is a car for hire. A taxi has_many :passengers. | |
| # - A Passenger records one person riding in one taxi one time. It belongs_to :taxi. |
| source :rubygems | |
| gem 'shotgun', :group=>:development | |
| gem 'rack-cache' | |
| gem 'sinatra', :require => 'sinatra/base' | |
| gem 'sinatra-support' | |
| gem 'haml' |
| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
