Re: [boost] [array] optional constructors in Boost.Array

From: Paul A Bristow (pbristow_at_[hidden])
Date: 2006-05-25 10:13:55

|  -----Original Message-----
|  From: boost-bounces_at_[hidden] 
|  [mailto:boost-bounces_at_[hidden]] On Behalf Of Thorsten Ottosen
|  Sent: 25 May 2006 15:02
|  To: boost_at_[hidden]
|  Subject: Re: [boost] [array] optional constructors in Boost.Array
|  
|  Vincent Bhérer-Roy wrote:
|  > On 25-May-06, at 06:39, Thorsten Ottosen wrote:
|  
|  > Also, it will gives compile time errors for things like that:
|  > 
|  > array<int,4>  a = list_of(1)(2)(3).to_array( a ); // compiles fine
|  > array<int,4, true> a(1,2,3); // doesn't compile
|  
|  Note that the former zero-initializes the remaining elements.

This is exactly what is NOT wanted. 

Although zeros are slightly better than a random not-initialised value, it
is far, far better to get a compile time message when clearly one meant to
initialize all the elements.

This is a fundamental mistake in C philosophy IMO.

It you want an array un-initialized, one should have say so very
specifically.

Otherwise, failure to initialize all the array is a mistake.

(other languages have convenient syntax for repeat counts, but that another
step).

Paul

---
Paul A Bristow
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