[Issue 16305] opCat opCatAssign priority bug

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16305

Lodovico Giaretta <lodovico at giaretart.net> changed:

           What    |Removed                     |Added
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                 CC|                            |lodovico at giaretart.net

--- Comment #1 from Lodovico Giaretta <lodovico at giaretart.net> ---
(In reply to Danila Letunovskiy from comment #0)
> import std.stdio;
> 
> void main(){
> 	int[] m = [1,2,3];
> 
> 	m = m ~ 4 ~ 5; // ok
> 
> 	m ~= 4 ~ 5; // not work
> }

It works as intended. binary ops have precedence over assignment ops, so your
last expression is equivalent to

 m ~= (4 ~ 5);

And (4 ~ 5) does not make sense, because ~ is defined when at least one operand
is an array.

What you want is one of these two (probably the first):

 (m ~= 4) ~= 5;
 m ~= [4] ~ 5;

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