Another benefit of given compared with := that I just thought of is this. Suppose you have a generator like

(expression(f(x), y, z)

for x in xs

for y in ys(x)

for z in zs(y))

With given notation you can optimize:

(expression(f_x, y, z)

for x in xs

given f_x = f(x)

for y in ys(x)

for z in zs(y))

whereas with :=, you can't.

Best,

Neil

On Sat, May 12, 2018 at 10:56 PM David Mertz <mertz@gnosis.cx> wrote:

Are votes cast in Edwin Hewitt's Hyperreals? I had thought python-ideas voted in the domain R rather than *R. :-)

On Sat, May 12, 2018, 5:20 PM Stephen J. Turnbull <turnbull.stephen.fw@u.tsukuba.ac.jp> wrote:
David Mertz writes:

> Only the BDFL has a vote with non-zero weight.

"Infinitesimal" != "zero".

Pedantically yours,

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