Feature #21932: `MatchData#get_int`

• Status: Open
• Assignee: -
• Target version: -

[nobu (Nobuyoshi Nakada)]

This is suggested by @akr (Akira Tanaka) today, $~.get_int(1) is equivalent to $1.to_i but does not create the intermediate string object.

https://github.com/nobu/ruby/tree/match-get_int

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)

[zenspider (Ryan Davis)]

Tried to add a comment to your commit but github is being very sketchy today.

In the method comment on the impl side, you have examples for parsing a date... but IDGI... 1/2/10 are supposed to be the base arg, right? Base 1?

[nobu (Nobuyoshi Nakada)]

zenspider (Ryan Davis) wrote in #note-2:

In the method comment on the impl side, you have examples for parsing a date... but IDGI... 1/2/10 are supposed to be the base arg, right? Base 1?

I can't get from where the example comes.

Do you want to mean something like this?

/\d+/.match("1/2/10").get_int(0)    # => 1
/\d+/.match("1/2/10").get_int(0, 1) # invalid radix 1 (ArgumentError)

[kou (Kouhei Sutou)]

FYI: strscan will use integer_at not get_int: https://github.com/ruby/strscan/pull/192#issuecomment-4002582149

[Eregon (Benoit Daloze)]

• Related to Feature #21943: Add StringScanner#get_int to extract capture group as Integer without intermediate String added