should psArray/psVector have a 'length' accessor?

[jhoblitt]

It seems logical to have a 'length' function for psArray, psVector, and perhaps
psList as we already have general purpose accessor/mutator functions for those
types. Accessing ->n directly is the only usage that is preventing these types
from being completely opaque to the user. I think that calling such a function
'size' would be too easy confused with 'size_of()' and 'NumElements'/etc. is a
little long winded.

So I'd like to propose the addtion of these functions to API:

psArrayLength()
psVectorLength()
psListLength() (???)

[Paul Price]

Added in the SDRS:

long psListLength(const psList *list);
long psArrayLength(const psArray *array);
long psVectorLength(const psVector *vector);
long psPixelsLength(const psPixels *pixels);