[Numpy-discussion] Documentation for dtypes with named fields

[Sam Tygier]

Thanks for those responses.

could the dtype pages in the numpy reference link to the basics.rec page in the user guide?

there seem to be some gotchas in list within a list notation.

if i have
a = array([0,0.1,0.2,0.3,0.4])
b =  array((0,0.1,0.2,0.3,0.4), dtype=[('a','f'), ('b','f'), ('c','f'), ('d','f'),('f','f')])

then
>>> a[[0,1,4]]
array([ 0. ,  0.1,  0.4])
>>> a[[4,1,0]]
array([ 0.4,  0.1,  0. ])

but
>>> b[['a','b','f']]
(0.0, 0.10000000149011612, 0.40000000596046448)
>>> b[['f','b','a']]
(0.0, 0.10000000149011612, 0.40000000596046448)

so i always get the vales back in the original order. is the by design, or a bug?

thanks

Sam