using Numeric in C++

[GujuBoy]

I have made a program in "Python" which imports Numeric and calls the
function

ones_array = Numeric.ones(blah,blah)

i see that C++ has a <numeric> library and i was wondering where the
"ones" function is ... in that library...

please help

[John Carson]

"GujuBoy" <di*****@gmail.com> wrote in message
news:11**********************@g44g2000cwa.googlegr oups.com

I have made a program in "Python" which imports Numeric and calls the
function

ones_array = Numeric.ones(blah,blah)

i see that C++ has a <numeric> library and i was wondering where the
"ones" function is ... in that library...

Since this is not a Python group, perhaps you would like to tell us what the
"ones" function does. I would not assume that the common use of the word
"numeric" implies common functionality between Python and the C++ library.

--
John Carson

[reidarok]

The 'ones'-function in Numeric creates a new array of a given
size/dimension and fills it with the value '1'.

A simple C++ version of this code could be the following:

#import <cstring>

double [] ones_array = new double[blah] // initialize an array with
'blah' length
memset(ones_array, 1, sizeof(double))

If you want a more advanced array class, you might want to take a look
at the STL vector-class.

--
Reidar

[Alf P. Steinbach]

* re******@gmail.com:

[mostly incoherent] The 'ones'-function in Numeric creates a new array of a given
size/dimension and fills it with the value '1'.
There is no 'ones' function and there is no Numeric in standard C++.

A simple C++ version of this code could be the following:

#import <cstring>
This is not standard C++.

double [] ones_array = new double[blah] // initialize an array with
This is not standard C++.

memset(ones_array, 1, sizeof(double))
This is Undefined Behavior.

If you want a more advanced array class, you might want to take a look
at the STL vector-class.

That's good advice.

--
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Q: Why is it such a bad thing?
A: Top-posting.
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[Pete Becker]

re******@gmail.com wrote:

The 'ones'-function in Numeric creates a new array of a given
size/dimension and fills it with the value '1'.

A simple C++ version of this code could be the following:

#import <cstring>

double [] ones_array = new double[blah] // initialize an array with
'blah' length
memset(ones_array, 1, sizeof(double))

double *ones_array = new double[blah];
fill(ones_array, ones_array + blah, 1.0);
or:
fill_n(ones_array, blah, 1.0);

--

Pete Becker
Dinkumware, Ltd. (http://www.dinkumware.com)