On 29-Oct-08, at 3:43 PM, Robert Kern wrote: > Eh, that's not entirely true. > > x = 1 > x += 2 > > That's not in-place. They are called "augmented assignments", not > "in-place operations" for this reason. The defining characteristic is > that "x <op>= y" should be equivalent to "x = x <op> y" except > possibly for *optional* in-place semantics.
Indeed. x = "foo" x += "bar" This definitely isn't in-place, since strings are immutable, but it works, and people expect it to work. Of course it's worth mentioning in the docs somewhere that only the augmented assignments for element-wise ops are in-place (which should be obvious to anyone who knows what an outer product is). David _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
