[Issue 18929] std.range.chain with single elements too

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18929

Seb <greensunny12 at gmail.com> changed:

           What    |Removed                     |Added
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           Keywords|                            |bootcamp
                 CC|                            |greensunny12 at gmail.com

--- Comment #1 from Seb <greensunny12 at gmail.com> ---
FWIW the built-in concatenation operator also allows this already:

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([1, 2, 3] ~ 42 ~ [42, 43]).writeln; // [1, 2, 3, 42, 42, 43]
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https://run.dlang.io/is/md3qKz

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