This seems to be a pretty good example of a "built-in" function that I
can't really see a practical use for... why does it need to be standard?
Why is it named so cryptically? When would you ever want to use it?
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I suppose you mean to_s.
Well this is a case of second sight ;). Look at this code
x.to_s # quite impressive, right? 
and now look at this code
String === x ? x : x.to_s
what do you prefer?
HTH
Robert
On Jan 4, 2008 10:44 PM, Jordan Cooper <nefigah@gmail.com> wrote:
This seems to be a pretty good example of a "built-in" function that I
can't really see a practical use for... why does it need to be standard?
Why is it named so cryptically? When would you ever want to use it?
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---
Whereof one cannot speak, thereof one must be silent.
Ludwig Wittgenstein
It's named after the unix program 'tr' with parameter '-s' as in squeeze.
Jan
On Friday 04 January 2008 22:44:48 Jordan Cooper wrote:
This seems to be a pretty good example of a "built-in" function that I
can't really see a practical use for... why does it need to be standard?
Why is it named so cryptically? When would you ever want to use it?
Robert Dober wrote:
I suppose you mean to_s.
No, he doesn't.
str.tr_s(from_str, to_str) => new_str
Processes a copy of _str_ as described under +String#tr+, then
removes duplicate characters in regions that were affected by the
translation.
"hello".tr_s('l', 'r') #=> "hero"
"hello".tr_s('el', '*') #=> "h*o"
"hello".tr_s('el', 'hx') #=> "hhxo"
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Jan Dvorak wrote:
It's named after the unix program 'tr' with parameter '-s' as in
squeeze.Jan
That makes more sense, thank you. I'm still not sure if it's justified,
in my head; but I guess that may be because of my C# background, where
it's encouraged to err on the side of too verbose as opposed to too
cryptic.
Unfortunately I still don't see a practical use for the thing though.
Thanks!
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Stupid me, I thought that was simply #tr, my bad.
R.
On Jan 4, 2008 11:12 PM, Sebastian Hungerecker <sepp2k@googlemail.com> wrote:
Robert Dober wrote:
> I suppose you mean to_s.No, he doesn't.
# Remove blank lines from standard input
ruby -e 'puts ARGF.read.tr_s("\n", "\n")'
# convert the standard input into a list of words, one per line:
ruby -e 'puts ARGF.read.tr_s("^A-Za-z", "\n")'
Gary Wright
On Jan 4, 2008, at 5:51 PM, J. Cooper wrote:
Unfortunately I still don't see a practical use for the thing though.