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Re: Unicode in Python

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On Wednesday, April 23, 2014 11:29:13 PM UTC+5:30, Rustom Mody wrote:
> On Wednesday, April 23, 2014 1:23:00 PM UTC+5:30, Steven D'Aprano wrote:
> > On Tue, 22 Apr 2014 23:57:46 -0700, Rustom Mody wrote:

> > > On the other hand when/if a keyboard mapping is defined in which the
> > > characters that are commonly needed are available, it is reasonable to
> > > expect the ∨,∧ to cost no more than 2 strokes each (ie about as much as
> > > an 'A'; slightly more than an 'a'. Which means that '∨' is expected to
> > > cost about the same as 'or' and ∧ to cost less than an 'and'

> > Oh, a further thought...

> > Consider your example:

> >     return year%4=0 ∧ (year%100≠0 ∨ year%100 = 0)

> > vs

> >     return year%4=0 and (year%100!=0 or year%100 = 0)

> > [aside: personally I like ≠ and if there was a platform independent way
> > to type it in any editor, I'd much prefer it over != or <> ]

I checked haskell and find the unicode support is better.

For variables (ie identifiers) python and haskell are much the same:

Python3:

>>> α = 1
>>> α
1

Haskell:

Prelude> let α = 1
Prelude> α
1


However in haskell one can also do this unlike python:
*Main> 2 ≠ 3
True

All that's needed to make this work is this set of new-in-terms-of-old definitions:

[The -- is comments for those things that dont work as one may wish]
--------------
import qualified Data.Set as Set
-- Experimenting with Unicode in Haskell source

-- Numbers
x ≠ y   = x /= y
x ≤ y   = x <= y
x ≥ y   = x >= y
x ÷ y   = divMod x y
x ⇑ y   = x ^ y
         
x × y   = x * y -- readability hmmm !!!
π = pi   
         
-- ⌊ x = floor x
-- ⌈ x = ceiling x

-- Lists         
xs ⤚ ys = xs ++ ys
n ↑ xs = take n xs
n ↓ xs = drop n xs

-- Bools
x ∧ y   = x && y 
x ∨ y   = y || y
-- ¬x = not x


-- Sets

x ∈ s   = x `Set.member` s
s ∪ t   = s `Set.union` t
s ∩ t   = s `Set.intersection` t
s ⊆ t   = s `Set.isSubsetOf` t
s ⊂ t   = s `Set.isProperSubsetOf` t
s ⊈ t   = not (s `Set.isSubsetOf` t)
-- ∅ = Set.null

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Unicode in Python Rustom Mody <rustompmody@gmail.com> - 2014-04-22 22:31 -0700
  Re: Unicode in Python Chris Angelico <rosuav@gmail.com> - 2014-04-23 15:50 +1000
    Re: Unicode in Python Rustom Mody <rustompmody@gmail.com> - 2014-04-22 23:57 -0700
      Re: Unicode in Python Chris Angelico <rosuav@gmail.com> - 2014-04-23 17:06 +1000
      Re: Unicode in Python Steven D'Aprano <steve@pearwood.info> - 2014-04-23 07:29 +0000
      Re: Unicode in Python Steven D'Aprano <steve@pearwood.info> - 2014-04-23 07:53 +0000
        Re: Unicode in Python Rustom Mody <rustompmody@gmail.com> - 2014-04-23 10:59 -0700
          Re: Unicode in Python wxjmfauth@gmail.com - 2014-04-26 00:15 -0700
            Re: Unicode in Python "Frank Millman" <frank@chagford.com> - 2014-04-26 09:45 +0200
            Re: Unicode in Python Ben Finney <ben@benfinney.id.au> - 2014-04-26 17:50 +1000
            Re: Unicode in Python Ian Kelly <ian.g.kelly@gmail.com> - 2014-04-26 09:38 -0400
              Re: Unicode in Python wxjmfauth@gmail.com - 2014-04-27 07:29 -0700
              Re: Unicode in Python wxjmfauth@gmail.com - 2014-04-28 01:57 -0700
                Re: Unicode in Python random832@fastmail.us - 2014-05-01 13:21 -0400
                Re: Unicode in Python wxjmfauth@gmail.com - 2014-05-07 23:04 -0700
                Re: Unicode in Python Michael Torrie <torriem@gmail.com> - 2014-05-01 21:50 -0600
                Re: Unicode in Python wxjmfauth@gmail.com - 2014-05-03 00:46 -0700
          Re: Unicode in Python Rustom Mody <rustompmody@gmail.com> - 2014-04-27 10:39 -0700
  Re: Unicode in Python Steven D'Aprano <steve@pearwood.info> - 2014-04-23 05:52 +0000
    Re: Unicode in Python Devin Jeanpierre <jeanpierreda@gmail.com> - 2014-04-22 23:19 -0700
    Re: Unicode in Python Ben Finney <ben@benfinney.id.au> - 2014-04-23 16:41 +1000

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