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Re: BOOL array

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Re: BOOL array

Subject: Re: BOOL array
From: Ken Thomases <email@hidden>
Date: Mon, 15 Sep 2008 16:53:42 -0500

On Sep 15, 2008, at 4:43 PM, Alex Reynolds wrote:

Is there a difference in the underlying storage between vector<BOOL> and vector<bool>?

Yes! std::vector is a class template. There's a generic implementation provided that works with any type (within certain constraints), but there's a specialization for the 'bool' case. You only get ~1 bit for bit with the specialization, i.e. vector<bool>.

Given that BOOL is typedef'ed to signed char, vector<BOOL> uses the same storage as vector<signed char>, about 1 byte per element.

Cheers,
Ken
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References:  
  >Re: BOOL array (From: "Alex Reynolds" <email@hidden>)




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