I can't figure out what's happening here:
shadowfax:~ rick$ ruby -ve'p "a\b\c"'
ruby 1.8.6 (2007-03-13 patchlevel 0) [i686-darwin8.10.2]
-e:1: unterminated string meets end of file
shadowfax:~ rick$ ruby -e'p "a\b\\c"'
"a\b\\c"
shadowfax:~ rick$ ruby -e'puts "a\b\\c"'
\c
shadowfax:~ rick$
What's up with \c in a string literal?
Rick Denatale wrote:
What's up with \c in a string literal?
"\cx" and "\C-c" mean both "Control-c".
Wolfgang Nádasi-Donner
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Rick Denatale wrote:
I can't figure out what's happening here:
shadowfax:~ rick$ ruby -ve'p "a\b\c"'
ruby 1.8.6 (2007-03-13 patchlevel 0) [i686-darwin8.10.2]
-e:1: unterminated string meets end of fileshadowfax:~ rick$ ruby -e'p "a\b\\c"'
"a\b\\c"shadowfax:~ rick$ ruby -e'puts "a\b\\c"'
\c
shadowfax:~ rick$What's up with \c in a string literal?
--
Rick DeNataleMy blog on Ruby
http://talklikeaduck.denhaven2.com/
Hu?
I fail to see what exactly is your problem. \b is backspace, so the a
becomes deleted in the output. In the inspect of course it still shows
up. \\ is a literal \ and that is followed by a c, so "\\c" naturally
prints as \c
Did I miss your point or so?
Regards
Stefan
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Wolfgang Nádasi-Donner wrote:
Rick Denatale wrote:
What's up with \c in a string literal?
"\cx" and "\C-c" mean both "Control-c".
Wolfgang Nádasi-Donner
Sorry, typo -> "\cc" and "\C-c" mean both "Control-c".
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No it was just a brain fart on my part.
On Nov 17, 2007 5:52 PM, Stefan Rusterholz <apeiros@gmx.net> wrote:
Rick Denatale wrote:
> I can't figure out what's happening here:
>
> shadowfax:~ rick$ ruby -ve'p "a\b\c"'
> ruby 1.8.6 (2007-03-13 patchlevel 0) [i686-darwin8.10.2]
> -e:1: unterminated string meets end of file
>
> shadowfax:~ rick$ ruby -e'p "a\b\\c"'
> "a\b\\c"
>
> shadowfax:~ rick$ ruby -e'puts "a\b\\c"'
> \c
> shadowfax:~ rick$
>
> What's up with \c in a string literal?
>
> --
> Rick DeNatale
>
> My blog on Ruby
> http://talklikeaduck.denhaven2.com/Hu?
I fail to see what exactly is your problem. \b is backspace, so the a
becomes deleted in the output. In the inspect of course it still shows
up. \\ is a literal \ and that is followed by a c, so "\\c" naturally
prints as \c
Did I miss your point or so?
--
Rick DeNatale
My blog on Ruby
http://talklikeaduck.denhaven2.com/
Rick Denatale wrote:
>
> http://talklikeaduck.denhaven2.com/Hu?
I fail to see what exactly is your problem. \b is backspace, so the a
becomes deleted in the output. In the inspect of course it still shows
up. \\ is a literal \ and that is followed by a c, so "\\c" naturally
prints as \c
Did I miss your point or so?No it was just a brain fart on my part.
--
Rick DeNataleMy blog on Ruby
http://talklikeaduck.denhaven2.com/
Please take a look at...
irb(main):001:0> "a\b\c""
=> "a\b\002"
...and the documentation in
Programming Ruby: The Pragmatic Programmer's Guide in
"Basic Types", subchapter "Strings" is a table...
Substitutions in double-quoted strings
\a Bell/alert (0x07) \nnn Octal nnn
\b Backspace (0x08) \xnn Hex nn
\e Escape (0x1b) \cx Control-x
\f Formfeed (0x0c) \C-x Control-x
\n Newline (0x0a) \M-x Meta-x
\r Return (0x0d) \M-\C-x Meta-control-x
\s Space (0x20) \x x
\t Tab (0x09) #{expr} Value of expr
\v Vertical tab (0x0b)
...which explains everything in detail.
Wolfgang Nádasi-Donner
On Nov 17, 2007 5:52 PM, Stefan Rusterholz <apeiros@gmx.net> wrote:
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