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[BCS]

Johnny wrote:
> BCS Wrote:
>>Johnny wrote:
 >>
>>>foreach (m; a.keys) {
>>>  if ( b[m] ) {
>>>   writefln("%s %s %s", m, a[m], b[m])
>>>  }
>>>  else {
>>>    writefln("%s %s", m, a[m])
>>>  }
>>>}
>>
>>foreach (k, v1; a) {
>>   if ( auto v2 = k in b )	// is this what your looking for?
>>    writefln("%s %s %s", k, v1, *v2)
>>   else
>>    writefln("%s %s", k, v1)
>>}
> 
> A good hint. my problem is that I get an ArrayBounds error if i try it with my method.
> ... an I can't catch it

The "/a/ in /b/" construct fixes that. Just looking up the value should 
do what you described if the value isn't their.