Re: [ALACPP] chapter 8

["Jon Stewart" <stew1@xxxxxxxxxxx>]

> I honestly am surprised when people make a mistake with operator[]. Most
> of the time you look at the function prototype and realize there just
> isn't a way to evaluate whether something is actually in the map or not.
> However, I've been burned on this one enough to frequently dream about
> putting something in my headers like, "using cbsmith::idiot_proof_map
> map;"


Yes, exactly. When applied correctly, it's useful and convenient. But the 
pain, oh, the pain, of debugging incorrect usage.

Also, sometimes folks (you know who you are) get a bit clever and write 
something like this:

	myMap[key];

instead of:

	myMap.insert(std::make_pair(key, myMap::value_type());

which will put a default constructed value type into the map, associated 
with key. Such usage is obviously intentional, but demonstrates a 
sophomoric sense of humor.



Jon
-- 
Jon Stewart
stew1@xxxxxxxxxxx
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