php – Page 28 – Türker Yıldırım

new in initializers, and the default that is an object

NoteDecember 7, 20212 min read

A constructor with an optional dependency needed a null default and a line of null-coalescing, in every class that had one. The exclusion of property defaults is the…

Readonly properties and the value object that stops defending itself

Deep diveDecember 7, 202110 min read

8.1, and a keyword that removes a getter per property. Forty value objects, each with private fields and public accessors that existed only to prevent writes.

First-class callable syntax replaces four spellings

NoteDecember 7, 20212 min read

A callable could be written four ways, all of them strings or arrays that no tool could follow through a rename. The literal … is not a placeholder…

A pure enum has no value, and that is the point

NoteDecember 2, 20212 min read

A pure enum has cases and nothing behind them, which makes it useless for a database column and exactly right for a distinction that only exists inside the…

Pure intersection types, and the interface you no longer write

NoteDecember 2, 20212 min read

Requiring something that is both Countable and Traversable previously meant declaring an interface extending both and changing every implementing class. The restriction to class and interface types is…

Static analysis at level 8, and the six months it took

Deep diveNovember 26, 202115 min read

1.0 in November after five years of 0.x. Level 0 passes and finds nothing anybody cared about; raising the level all at once does not work.

get_object_vars from inside sees the private ones

NoteNovember 25, 20212 min read

get_object_vars respects scope, so the same call returns different arrays depending on where it is written. The scope sensitivity is documented and is nearly always encountered as a…

An abstract class with a constructor cannot promote

NoteNovember 24, 20212 min read

Constructor promotion needs a constructor body to assign into, so it is not available on an abstract constructor or in an interface. An abstract class with a concrete…

preload is a startup cost you pay once per worker

NoteNovember 23, 20212 min read

Preloading compiles and links classes into shared memory at startup, and the linking is what makes it different from opcache. The measured gain on a typical framework application…

Late static binding, and the factory that returns the subclass

NoteNovember 19, 20212 min read

self resolves where the code is written and static resolves where it was called from, and a factory on a base class needs the second. The rule is…