Bug in usage of associative array: dynamic array with string as a key

[Cecil Ward]

On Friday, 30 June 2023 at 19:58:39 UTC, FeepingCreature wrote:
> On Friday, 30 June 2023 at 19:05:23 UTC, Cecil Ward wrote:
>> I have code roughly like the following:
>>
>>    dstring str = "name"d;
>>    uint ordinal =  (( str in Decls.ordinals ) !is null)  ?  
>> Decls.ordinals[ str ]  :  -1;
>>
>> struct Decls
>>    {
>>    uint[ dstring]   ordinals;
>>    }
>>
>> //and
>>    Decls.ordinals[ str ] = ordinal_counter++;
>>
>> The problem is that it always returns ordinal== -1 from the 
>> expression. Can you sort me out?
>
> Impossible to tell without a complete repro, I'm afraid. The 
> expression, at least, looks correct at first glance.
>
> Note that you can do `uint ordinal = Decls.ordinals.get(str, 
> -1);`.

Is the second argument an ‘else’ then, my friend?