[nem-en] Operator ??

[Igor Tkachev]

Hello Ivan,

> Hmm, I'm not sure will ??= operator usefull,

I'm sure you are not :))

For example, property lazy initialization with non default value.

> but it's quite simple to implement when we have ?? operator:

>   macro @??= (exprA, exprB)
>   {
>     <[ {$exprA = $exprA ?? $exprB; $exprA} ]>
>   }

> Let's JIT removes unnecessary assignment: a = a

Now I'm not sure it will.

-- 
Best regards,
 Igor                            mailto:it at rsdn.ru