- [WayBack] Jimmy Bogard 🍻 on Twitter: “I remember doing all this in like 2005-8 and it worked well when I didn’t have an ORM doing this junk and horribly when it did”
- [WayBack] Matthew Tanner on Twitter: “… ”
–jeroen
Archive for the ‘Design Patterns’ Category
Very different views on the repository pattern
Posted by jpluimers on 2021/07/20
Posted in .NET, Design Patterns, Development, Software Development | Leave a Comment »
How many dependencies does your development eco system have?
Posted by jpluimers on 2021/02/03
About 5 years after the disaster around npm and left-pad, I wonder
- how many dependencies on packages or libraries your software has,
- how many of them have a good or excellent test suite,
- how many of these you are in full control of determining the exact version used and the location it is uses from.
The disaster was well phrased in [WayBack] NPM & left-pad: Have We Forgotten How To Program? – David Haney – Blogging my experiences as a developer and engineering manager. of which these topics:
- Functions are not packages
- Third party problems
- Strive for few dependencies
and these quotes:
- React, Babel, and a bunch of other high-profile packages on NPM broke. The reason they broke is rather astounding:A simple NPM package called left-pad that was a dependency of their code.
- some of the things that I observed:
- There’s a package called isArray that has 880,000 downloads a day, and 18 million downloads in February of 2016. It has 72 dependent NPM packages. Here’s its entire 1 line of code:
return toString.call(arr) == '[object Array]'; - There’s a package called is-positive-integer (GitHub) that is 4 lines long and as of yesterday required 3 dependencies to use. The author has since refactored it to require 0 dependencies, but I have to wonder why it wasn’t that way in the first place.
- A fresh install of the Babel package includes 41,000 files
- A blank jspm/npm-based app template now starts with 28,000+ files
- There’s a package called isArray that has 880,000 downloads a day, and 18 million downloads in February of 2016. It has 72 dependent NPM packages. Here’s its entire 1 line of code:
- frameworks create a “core” library of basic functionality. Such a library is vetted by the creators of the language and pretty much guaranteed to be correct and bug-free.
- if you cannot write a left-pad, is-positive-integer, or isArray function in 5 minutes flat (including the time you spend Googling), then you don’t actually know how to code. Any of these would make a great code screening interview question to determine whether or not a candidate can code.
- Take on a dependency for any complex functionality that would take a lot of time, money, and/or debugging to write yourself. Things like a database access layer (ORM) or caching client should be dependencies because they’re complicated and the risk of the dependency is well worth the savings and efficiency.
- ask the React team how well their week has been going, and whether they wish they had written those 11 lines for left-padding a string themselves.
Via: [WayBack] “There’s a package called isArray that has 880,000 downloads a day, and 18 million downloads in February of 2016. It has 72 dependent NPM packages. Here… – Elke Stangl (elkement) – Google+
Related:
- [Archive.is] development ecosystems with lots of dependencies – Google Search
- [WayBack] left-pad.io
- [WayBack] How one developer just broke Node, Babel and thousands of projects in 11 lines of JavaScript • The Register
–jeroen
Share this:
Posted in Design Patterns, Development, Software Development, Systems Architecture | Leave a Comment »
Mark Struberg on Twitter: “My key takaway is: “You can fix most conceptual problems of a Monolith by converting to MicroServices. And you can fix most conceptual problems of MicroServices by making a Monolith out of it”.
Posted by jpluimers on 2020/09/10
I wonder what the state of monoliths versus microservices is right now. Likely somewhere in the middle of SOA and Client/Server (:
[WayBack] Mark Struberg on Twitter: <<My key takaway is: “You can fix most conceptual problems of a Monolith by converting to MicroServices. And you can fix most conceptual problems of MicroServices by making a Monolith out of it”.… >>
–jeroen
Share this:
Posted in Design Patterns, Development, Software Development, Systems Architecture | Leave a Comment »
Nick Hodges on SOLID in TypeScript using Angular
Posted by jpluimers on 2020/08/18
For my link archive: after a long history of Delphi programming, Nick Hodges did a
SOLID series with TypeScript using Angular
- [WayBack] Writing SOLID Code: SRP – Angles and Types on the Single Responsibility Principle
- [WayBack] Writing SOLID Code: OCP – Angles and Types on the Open/Closed Principle
- [WayBack] Writing SOLID Code: LSP – Angles and Types on the Liskov Substitution Principle – Wikipedia
- [WayBack] Writing SOLID Code: ISP – Angles and Types on the Interface Segregation Principle
- [WayBack] Writing SOLID Code: DIP – Angles and Types on the Dependency Inversion Principle
They explain these SOLID – Wikipedia concepts:
- Single responsibility principle – Wikipedia
- Open–closed principle – Wikipedia
- Liskov substitution principle – Wikipedia
- Interface segregation principle – Wikipedia
- Dependency inversion principle – Wikipedia
After that, he did a series on:
[WayBack] Angular 101 – Angles and Types
More Angular and TypeScript
Since Nick likes that combination so much:
- [WayBack] Philly Code Camp 2018.2 – Angles and Types
- [WayBack] GitHub – NickHodges/PhillyCCTodoApp: Sample ToDo App for Philly Code Camp 2018.2
- via [WayBack] Last Friday (November 16, 2018) I taught a full day class called “Angular 101: Angular from Start to Finish“. It was really fun, and my attendees seeme… – Nick Hodges – Google
and his TypeScript series start:
- [WayBack] Running TypeScript in the Console – Angles and Types
- [WayBack] TypeScript OOP: Inheritance – Angles and Types
- [WayBack] TypeScript OOP: Polymorphism – Angles and Types
and what started as a trilogy in 5 parts of his [WayBack] Angular 101 – Angles and Types became much longer:
- [WayBack] Angular 101: Step 1 — Basics – Angles and Types (which has
ngas prerequisite, that seems to require a Nigerian passport; see screenshot on the right) - [WayBack] Angular 101: Step 2 – An API – Angles and Types
- [WayBack] Angular 101: Step 3 — A NavBar Component – Angles and Types
- [WayBack] Angular 101: Step 4 – The Main Pages – Angles and Types
- [WayBack] Angular 101: Step 5 — HTTP and DI – Angles and Types
- [WayBack] Angular 101: Step 6 — Accessing the API – Angles and Types
- [WayBack] Angular 101: Step 7 — Filtering Data – Angles and Types
Related:
- [Archive.is] what requirements does ng have – Google Search
- [WayBack] Nick Hodges on Twitter: “Angular 101: Step 1 — Basics https://t.co/wn5mhqBcxR… “https://twitter.com/nickhodges/status/1072155229486022659
DIID update
Nick also updated the public repository with the changes that did make it in his Dependency injection in Delphi book earlier:
- [WayBack] Code for DIID Updated – Delphi-losophy
- [WayBack] NickHodges / nickdemocode / diid — Bitbucket
- [WayBack] NickHodges / NickDemoCode / Commits — Bitbucket
- [WayBack] NickHodges / NickDemoCode / commit / c6c5763aa7e9 — Bitbucket: Removing use of the Global Container
- [WayBack] NickHodges / NickDemoCode / commit / e0e207911ca9 — Bitbucket: 000000: Changes to demo code
–jeroen
Share this:
Posted in Design Patterns, Development, Scripting, Software Development, TypeScript | Leave a Comment »
Watch Kevlin Henney’s “Enterprise Programming Tricks for Clean Code” and drink The Singleton Single Malt Scotch Whisky
Posted by jpluimers on 2020/06/30
Watch Enterprise Programming Tricks for Clean Code by Kevin Henney and Agile is Dead by Pragmatic Dave Thomas.
Then (or at the same time) drink [WayBack] The Singleton Single Malt Scotch Whisky | The Singleton.
A few titbits:
- “Most systems are stringly typed”.
- [WayBack] Jeroen Pluimers on Twitter: “@KevlinHenney Watched https://t.co/F2IIFwZ2mY and had so much fun. Thanks! Also found out that thenceforth finally got removed from the Fizz Buzz entry at Wikipedia mid 2017. This was the edit: https://t.co/GMk9ymB25U The last version having it was https://t.co/fAUedDFaEI”
- [WayBack] Clean Coders Hate What Happens To Your Code When You Use These Enterprise Programming Tricks – PDF
- enterprise, noun
- a project or undertaking that is especially bold, complicated or arduous
- readiness to engage in undertakings of difficulty, risk, danger or daring
- a design of which the execution is attempted; a commercial or industrial undertaking
- a firm, company or business
- a unit of economic organisation or activity
- [Archive.is] Fizzbuzzalooza from Kevlin Henney
I should watch more of his videos; luckily he has a playlist on YouTube.
There is also a Vimeo channel, and an InfoQ channel. These alle are not in sync, because, well, internet.
- Presentations and Interviews – YouTube
- [WayBack] Kevlin Henney: Presentations and Panels on Vimeo
- [WayBack] Kevlin Henney’s InfoQ Profile
–jeroen
Share this:
Posted in Design Patterns, Development, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 