[Discuss-gnuradio] Avoid double memory initilization in PMT unified vectors

[Stefan Brüns]

Hi,

in PMT, there is code like:

pmt_u8vector::pmt_u8vector(size_t k, uint8_t fill)
  : d_v(k)
{
  for (size_t i = 0; i < k; i++)
    d_v[i] = fill;
}

As std::vector initializes the memory by itself when called with an size 
argument in the constructor, the memory is initialized twice.

A faster version with the same result is:

pmt_u8vector::pmt_u8vector(size_t k, uint8_t fill)
  : d_v(k, fill)
{}

Same is true for the other data types.

Another question:
Why are the classes for the different types written "by hand", and not using 
templates, eg:

template <typename T>
class pmt_uniform_vector
{
  ...
}
typedef pmt_uniform_vector< uint8_t > pmt_u8vector;

Stefan

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