Great, I'm glad it was useful!
Ryan
On Sat, Jul 11, 2020 at 12:27 PM Peter W A Wood
wrote:
> Dear Ryan
>
> Thank you for both your full, complete and understandable explanation and
> a working solution which is more than sufficient for my needs.
>
> I created a very simple function based on th
Dear Ryan
Thank you for both your full, complete and understandable explanation and a
working solution which is more than sufficient for my needs.
I created a very simple function based on the reg=exp that you suggested and
tested it against a number of cases:
#lang racket
(require test-engin
Dear Ryan
Thank you very much for the kind, detailed explanation which I will study
carefully. It was not my intention to reply to you off-list. I hope I have
correctly addressed this reply to appear on-list.
Peter
> On 10 Jul 2020, at 15:47, Ryan Culpepper wrote:
>
> (I see this went off th
I did in fact try installing readline-gpl (raco pkg install readline-gpl),
but it didn’t change anything. Interestingly, the bug in #3223 persists for
me, too. This suggests that I didn’t install or invoke it correctly. Do you
need to run racket with any flag to make readline-gpl take its effect?
On Thu, Jul 9, 2020 at 10:32 AM Sorawee Porncharoenwase <
sorawee.pw...@gmail.com> wrote:
> Racket REPL doesn’t handle unicode well. If you try (regexp-match?
> #px"^[a-zA-Z]+$" "héllo") in DrRacket, or write it as a program in a file
> and run it, you will find that it does evaluate to #f.
>
See
If you want a regular expression that does match the example string, you
can use the \p{property} notation. For example:
> (regexp-match? #px"^\\p{L}+$" "h\uFFC3\uFFA9llo")
#t
The "Regexp Syntax" docs have a grammar for regular expressions with links
to examples.
Ryan
On Thu, Jul 9, 2020 a
Racket REPL doesn’t handle unicode well. If you try (regexp-match?
#px"^[a-zA-Z]+$" "héllo") in DrRacket, or write it as a program in a file
and run it, you will find that it does evaluate to #f.
On Thu, Jul 9, 2020 at 7:19 AM Peter W A Wood wrote:
> I was experimenting with regular expressions
I was experimenting with regular expressions to try to emulate the Python
isalpha() String method. Using a simple [a-zA-Z] character class worked for the
English alphabet (ASCII characters):
> (regexp-match? #px"^[a-zA-Z]+$" "hello")
#t
> (regexp-match? #px"^[a-zA-Z]+$" "h1llo")
#f
It then daw
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