#ruby on 2024-03-04 — irc logs at libera.irclog.whitequark.org

2024-01-18 18:20 havenwood changed the topic of #ruby to: Ruby 3.3.0, 3.2.3, 3.1.4 https://www.ruby-lang.org | Rules https://ruby-community.com | Logs https://libera.irclog.whitequark.org/ruby

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01:19 <sam113101> how do I force pry to print an array on a single line?

01:20 <sam113101> I guess doing "p array; nil" does it

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02:53 <havenwood> sam113101: You can do: puts array.to_s

02:53 <sam113101> yo I thought ruby had support for infinitly large numbers

02:54 <sam113101> [94] pry(main)> ('9' * 1000000000000000000000000000000000000000000000000000).to_i

02:54 <sam113101> RangeError: bignum too big to convert into `long'

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03:00 <havenwood> sam113101: Consider that 100000000000000 bytes is 100 terrabytes. Like `String.new(capacity: 100000000000000)`.

03:00 <havenwood> sam113101: It's a problem with the size of the String rather than Ruby's Integer.

03:01 <[0x1eef_]> Probably a good thing that didn't work then :)

03:02 <sam113101> are you saying I don't have enough ram

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03:02 <[0x1eef_]> Unless you have a supercomputer then probably not enough ram.

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03:03 <[0x1eef_]> I think Ruby handles that though (with NoMemoryError) so computer would probably be sluggish and then return to normal.

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03:32 <sam113101> would bignum be able to hold that number though?

03:45 <havenwood> sam113101: To be clear, you're talking about one sexdecillion 9s (10**51).

03:46 <havenwood> sam113101: Are you wanting a sexdecillion worth of nines or are you wanting 52 places?

03:47 <havenwood> Consider that `(0..52).reduce { 10 * _1 + 9 }` would be 52 9s.

03:47 <havenwood> >> (0..52).reduce { 10 * _1 + 9 }

03:47 <ruby[bot]> havenwood: # => (https://carc.in/#/r/gjii)

03:48 <havenwood> You can easily have say a million 9s: (0..1_000_000).reduce { 10 * _1 + 9 }

03:48 <havenwood> Ruby doesn't mind if you want a sexdecillion worth of 9s, but you need an enormous amount of memory.

03:49 <havenwood> Keep in mind, a google is 100 zeros and a sexdecillion is 51 so you're talking an enormous scale.

03:50 <havenwood> sam113101: If you had the computer, you could: (0..10**51).reduce { 10 * _1 + 9 }

03:50 <havenwood> It's a truly enormous number.

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03:55 <havenwood> sam113101: Keep in mind the universe isn't even 10**27 nanoseconds old and you're talking 10**51 9s.

03:56 <havenwood> sam113101: I'm not sure if you mean that many digits? Were you thinking trillions of nines or you really meant a sexdecillion?

04:17 <sam113101> it was just an example, I'm hitting the limit in a project euler problem, I guess I'll have to use modulo or some other trick

04:17 <sam113101> I'd be a pretty big number though

04:17 <sam113101> it'd*

04:17 <sam113101> big boy number

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07:24 <rapha> just for fun i put (0..10**27).reduce{10 * _1 + 9} into pry. it's still prying 1 hour later. will head to work now. curious to see if it'll still be prying tonight.

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16:51 <rapha> huh? why does the output of `... | ruby -pe '$_.gsub!(/\s/,"+")'` end in a plus followed by an inverted-colors percent sign?

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17:18 <adam12> rapha: newline?

17:19 <adam12> $echo 'foo bar' | ruby -pe '$_.gsub!(/\s/,"+")'

17:19 <adam12> foo+bar+⏎

17:19 <rapha> oh. indeed, .strip fixes it. i've never seen an inverted-colour % sign for newline before.

17:19 <rapha> thank you!

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18:19 <rapha> havenwood: still no result for `(0..10**27).reduce { 10 * _1 + 9 }` :P

18:21 <rapha> lol and thank god ... imagine if pry had gotten to try and print that to the terminal

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