• qznc (5/5) Jan 22 2013 After "Atomic Updates" from rosettacode.org, here is
• bearophile (4/5) Jan 23 2013 See RosettaCode, only a little reformatting, cleaning, etc.
• bearophile (4/4) Jan 23 2013 We are getting to the Mathematica again:
• qznc (3/7) Jan 24 2013 We're even now ;)
• bearophile (17/19) Jan 24 2013 I have cut some lines, and I have used a more functional style,
• qznc (4/22) Jan 24 2013 I completely agree. The functional style is better and I miss

"qznc" <qznc go.to> writes:

After "Atomic Updates" from rosettacode.org, here is 
"S-Expressions".

Problem: http://rosettacode.org/wiki/S-Expressions

Code: http://dpaste.dzfl.pl/fd485808

Comments, improvements?

"bearophile" <bearophileHUGS lycos.com> writes:

qznc:

 Comments, improvements?

See RosettaCode, only a little reformatting, cleaning, etc.

Bye,
bearophile

"bearophile" <bearophileHUGS lycos.com> writes:

We are getting to the Mathematica again:
http://rosettacode.org/wiki/Rosetta_Code/Rank_languages_by_popularity

Bye,
bearophile

"qznc" <qznc go.to> writes:

On Wednesday, 23 January 2013 at 17:49:23 UTC, bearophile wrote:
 We are getting to the Mathematica again:
 http://rosettacode.org/wiki/Rosetta_Code/Rank_languages_by_popularity

 Bye,
 bearophile

We're even now ;)

http://rosettacode.org/wiki/Rosetta_Code/Rank_languages_by_popularity#D

"bearophile" <bearophileHUGS lycos.com> writes:

qznc:

 We're even now ;)

 http://rosettacode.org/wiki/Rosetta_Code/Rank_languages_by_popularity#D

I have cut some lines, and I have used a more functional style, 
that fits well for this entry. Compared to the C++ entry this D 
entry is nicer.

I greatly prefer the "verbose" option of the Python regex. And 
"g" for regexes should be the default.


This D code:

auto pairs = categories.match(r2)
              .filter!(m => languages.canFind(m[1]))()
              .map!(m => tuple(m[2].to!uint(), m[1].dup))()
              .array();

With a Python-like syntax becomes nicer:

auto pairs = [(r.to!uint, l.dup) for l,r in
               categories.match(r2)
               if l in languages];

Bye,
bearophile

"qznc" <qznc go.to> writes:

On Friday, 25 January 2013 at 01:52:27 UTC, bearophile wrote:
 qznc:

 We're even now ;)

 http://rosettacode.org/wiki/Rosetta_Code/Rank_languages_by_popularity#D

 I have cut some lines, and I have used a more functional style, 
 that fits well for this entry. Compared to the C++ entry this D 
 entry is nicer.

 I greatly prefer the "verbose" option of the Python regex. And 
 "g" for regexes should be the default.


 This D code:

 auto pairs = categories.match(r2)
              .filter!(m => languages.canFind(m[1]))()
              .map!(m => tuple(m[2].to!uint(), m[1].dup))()
              .array();

 With a Python-like syntax becomes nicer:

 auto pairs = [(r.to!uint, l.dup) for l,r in
               categories.match(r2)
               if l in languages];


I completely agree. The functional style is better and I miss 
list comprehensions as well. It does not require new keywords, so 
maybe it can be added to D at some point.