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Date: Mon, 29 Jun 2020 12:52:27 +0200
Message-ID: <CAHRtwKaz_kvr=V0MrnqdTntB2tRdpHotP0v2+NHmo-DcZJhRtA@mail.gmail.com>
To: Deleu <deleugyn@gmail.com>
Cc: Max Semenik <maxsem.wiki@gmail.com>, PHP Internals List <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] Property write visibility
From: andre.romcke@gmail.com (=?UTF-8?B?QW5kcsOpIFLDuG1ja2U=?=)

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man. 29. jun. 2020 kl. 12:06 skrev Deleu <deleugyn@gmail.com>:
> Are there any other languages that have a similar syntax? Has any other
language syntax been considered

The only one I could find that matches is Swift:

public private(set) var numberOfEdits =3D 0

https://docs.swift.org/swift-book/LanguageGuide/AccessControl.html#ID18



Beyond that there are some notable related examples:

C#

public readonly Color Black =3D new Color(0, 0, 0);

The semantics of readonly is closer to what we refer to as immutable here:
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/language-=
specification/classes#readonly-fields

If you want other semantics in C# you'll need to resort to Accessors:
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/language-=
specification/classes#accessors



Rust:

// This field can be read (but not written) by super.
#[readonly]
pub(super) readable: i32,

Essentially a feature using "attributes":
https://docs.rs/readonly/0.1.6/readonly/

--
Best
Andr=C3=A9 R=C3=B8mcke

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