oop – Page 6 – Türker Yıldırım

A value object library, and the day it needed a serializer

Deep diveSeptember 20, 202310 min read

A Money type, an Email type, and thirty more, none of which can cross a boundary without being unwrapped by hand.

An enum with an interface, and the match I stopped writing

NoteSeptember 18, 20232 min read

The same match on an enum, in four places, each returning a different aspect of the same thing. Moving the match onto the enum means adding a case…

A trait with a constant, and why I still avoid traits

NoteAugust 24, 20232 min read

Constants in traits arrived in 8.2 and the first thing I did with the feature was decide not to use it. The method conflict rules have an escape…

A backed enum in a query parameter, validated once

NoteMay 24, 20232 min read

A status filter validated with an in: rule listing seven values, which had drifted from the eight the enum defined. The drift is the whole point: any list…

TypeScript 5.0, and decorators that are the standard ones

NoteApril 27, 20231 min read

The March release implements the stage 3 proposal, which is a different feature from the flag that has been in the language since 2015. The two cannot be…

TypeScript 5, and the decorators we had been faking

Deep diveApril 21, 20239 min read

5.0 in March, decorators that are the standard proposal rather than the old flag, and a build nobody could explain.

Named arguments into a constructor with nine parameters

NoteApril 16, 20232 min read

A report query object with nine constructor parameters, six of them nullable, called from four places with different subsets. Named arguments make the nine-parameter constructor tolerable, and tolerable…

A container we replaced with four functions

Deep diveApril 12, 20238 min read

A package with a dependency injection container, for eleven services, spending 90 ms compiling on a request that does 12 ms of work.

A domain service that exists because two entities disagree

NoteMarch 13, 20232 min read

Transferring stock between two warehouses belongs to neither warehouse, and putting it on one of them makes that one special for no reason. This is the case a…

The generic PHP does not have, and the analyser that does

Deep diveFebruary 27, 20239 min read

A collection class that returns mixed, and forty call sites asserting the type by hand. Docblock generics, and where they stop being worth it.