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To: Benas IML <benas.molis.iml@gmail.com>, Nikita Popov <nikita.ppv@gmail.com>
CC: Mike Schinkel <mike@newclarity.net>, John Bafford <jbafford@zort.net>, PHP
 internals <internals@lists.php.net>
Thread-Topic: [PHP-DEV] Draft RFC: foreach iteration of keys without values
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Date: Wed, 2 Sep 2020 23:45:00 +0000
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Subject: Re: [PHP-DEV] Draft RFC: foreach iteration of keys without values
From: tysonandre775@hotmail.com (tyson andre)

Hi Benas IML,=0A=
=0A=
>=A0I'd also like to mention that other languages don't have any kind of=0A=
> syntactic sugar/special syntax for iterating over keys. That is achieved=
=0A=
> using a function though.=0A=
=0A=
That's not true, Golang has iterating over keys by default and a more verbo=
se syntax to iterate over values.=0A=
https://gobyexample.com/range=0A=
`_` is used to indicate to the compiler that the result should be discarded=
.=0A=
=0A=
=0A=
```=0A=
    // range on map iterates over key/value pairs.=0A=
    kvs :=3D map[string]string{"a": "apple", "b": "banana"}=0A=
    for k, v :=3D range kvs {=0A=
        fmt.Printf("%s -> %s\n", k, v)=0A=
    }=0A=
    // iterate over just the keys of a map.=0A=
    for k :=3D range kvs {=0A=
        fmt.Println("key:", k)=0A=
    }=0A=
    // iterate over just the values of a map.=0A=
    for _, v :=3D range kvs {=0A=
        fmt.Println("key:", k)=0A=
    }=0A=
```=0A=
=0A=
Cheers,=0A=
- Tyson=