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| From | 7stud -- <bbxx789_05ss@yahoo.com> |
| Newsgroups | comp.lang.ruby |
| Subject | Re: String Element Reference |
| Date | Wed, 25 May 2011 12:40:52 -0500 |
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jason solomon wrote in post #1000974: > I am new to Ruby so I apologize if this seems dumb. > > I am currently running ruby 1.8.7 (2009-06-12 patchlevel 174) > [universal-darwin10.0]. > > When working in an irb session I'm having trouble with String element > reference. > > Example: > > a = "hello" > > a[0] should return "h", but instead is returning 104. > > Seems like it's return the ascii value of the element, but why? > > > When I do a[0,3] the return is the expected "hel". > > > > > Any ideas as to why a[0] is returning a FixNumb object? > For some reason Matz thought it was more useful to define the [] method for strings to return the ascii value. As you discovered, if you specify a length as the second argument, you get the characters. Applying that knowledge, if you specify a length of 1, you will get the character. So the expression: str[0,1] will return the character in both ruby 1.8 and ruby 1.9. -- Posted via http://www.ruby-forum.com/.
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String Element Reference jason solomon <solomon.jas@gmail.com> - 2011-05-25 12:23 -0500 Re: String Element Reference Robert Klemme <shortcutter@googlemail.com> - 2011-05-25 19:29 +0200 Re: String Element Reference jason solomon <solomon.jas@gmail.com> - 2011-05-25 12:34 -0500 Re: String Element Reference 7stud -- <bbxx789_05ss@yahoo.com> - 2011-05-25 12:40 -0500 Re: String Element Reference Javier Hidalgo Villegas <cooljavy@hotmail.com> - 2011-05-25 13:35 -0500
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