stl map find function

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July 1st, 2003, 11:10 PM

kavi_s

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stl map find function

Hi,

I am trying to figure out how to see if a find in a map didn't find what I was looking for....if i do:

map<....>::iterator it = NULL;
it = mapInstance.find("hello");

and suppose "hello" doesn't exist in the map, then how will I know?? 'it' will not point to NULL if the find is unsucessful, am I correct? How can I figure out the sucess of the find?

THanks,

Kavi

July 2nd, 2003, 12:07 AM

jonsagara

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The find function returns an interator to the specified key. If the key isn't found, then it returns an iterator to the end of the map.

So...

Code:

if (it != mapInstance.end ())
{
    // Key found
}
else
{
    // Key NOT found
}

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Jon Sagara

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July 2nd, 2003, 09:59 AM

kavi_s

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Thanks

Thanks for ur help, Jon!

Kavi

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