Dear all
I am learning Ruby. "The Ruby Way" has following example.
irb(main):047:0> str = "Albert Einstein"
=> "Albert Einstein"
irb(main):048:0> str.index(?E)
=> 7
irb(main):049:0> str1 = "mathematics"
=> "mathematics"
irb(main):050:0> flag1 = str1.include? ?e
=> true
irb(main):051:0>
What is ?E
(Does ? above work like shell globbing?)
I tried the FAQ online but could not get anything..
TIA for any pointers/online help
-- thx atul
cfp:~ > cat a.rb
p ?A
p 'A'[0]
p 65.chr
cfp:~ > ruby a.rb
65
"A"
On May 26, 2008, at 9:39 PM, askingagain wrote:
Dear all
I am learning Ruby. "The Ruby Way" has following example.irb(main):047:0> str = "Albert Einstein"
=> "Albert Einstein"
irb(main):048:0> str.index(?E)
=> 7
irb(main):049:0> str1 = "mathematics"
=> "mathematics"
irb(main):050:0> flag1 = str1.include? ?e
=> true
irb(main):051:0>What is ?E
(Does ? above work like shell globbing?)
I tried the FAQ online but could not get anything..
TIA for any pointers/online help
-- thx atul
--
we can deny everything, except that we have the possibility of being better. simply reflect on that.
h.h. the 14th dalai lama
askingagain wrote:
Dear all
I am learning Ruby. "The Ruby Way" has following example.irb(main):047:0> str = "Albert Einstein"
=> "Albert Einstein"
irb(main):048:0> str.index(?E)
=> 7
irb(main):049:0> str1 = "mathematics"
=> "mathematics"
irb(main):050:0> flag1 = str1.include? ?e
=> true
irb(main):051:0>What is ?E
(Does ? above work like shell globbing?)
I tried the FAQ online but could not get anything..
TIA for any pointers/online help
-- thx atul
See: Programming Ruby: The Pragmatic Programmer's Guide
"You can also get the integer value corresponding to an ASCII character or escape sequence by preceding it with a question mark."
--
Kam-Hung Soh <a href="http://kamhungsoh.com/blog">Software Salariman</a>