Comments on: Ruby For Java (and C#) Programmers, Part 2 - Operators, methods, and more on classes http://www.magpiebrain.com/blog/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/ Sam Newman's blog Wed, 15 Oct 2008 19:59:22 +0000 http://wordpress.org/?v=2.5.1 By: riffraff http://www.magpiebrain.com/blog/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-763 riffraff Thu, 16 Jun 2005 14:13:53 +0000 http://www.magpiebrain.com/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-763 I guess you typoed "comparable", it should be uppercased since it is a module. I also think it should be highlighted how mixins+operator ovwerloading in this particular case avoid code duplication and possible errors in respect to java, i.e. a < b instead of a.compareTo(b)== -1 I guess you typoed “comparable”, it should be uppercased since it is a module.

I also think it should be highlighted how mixins+operator ovwerloading in this particular case avoid code duplication and possible errors in respect to java, i.e.

a < b
instead of
a.compareTo(b)== -1

]]> By: Sam Newman http://www.magpiebrain.com/blog/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-762 Sam Newman Thu, 16 Jun 2005 09:18:23 +0000 http://www.magpiebrain.com/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-762 I'll probaby introduce arrays and hashes in part three, but will save the juicy stuff for part 4. Oh, and I'll try and grab a copy of Opera this weekend and give the site the once over. I’ll probaby introduce arrays and hashes in part three, but will save the juicy stuff for part 4. Oh, and I’ll try and grab a copy of Opera this weekend and give the site the once over.

]]> By: Aslak Hellesoy http://www.magpiebrain.com/blog/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-761 Aslak Hellesoy Thu, 16 Jun 2005 06:24:02 +0000 http://www.magpiebrain.com/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-761 Nice ones Sam, One topic that I think could be interesting for a future blog in the same series would be collections (Hash, Enumerable and Array) and how they compare with their Java counterparts. Especially how to iterate over them, insert and access values, and also how to use the very powerful join, collect, inject, each methods (these are my favourites, there are many more) Nice ones Sam,

One topic that I think could be interesting for a future blog in the same series would be collections (Hash, Enumerable and Array) and how they compare with their Java counterparts.

Especially how to iterate over them, insert and access values, and also how to use the very powerful join, collect, inject, each methods (these are my favourites, there are many more)

]]> By: simonsays http://www.magpiebrain.com/blog/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-760 simonsays Wed, 15 Jun 2005 21:29:48 +0000 http://www.magpiebrain.com/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-760 Version 8.01 Build 7583 Platform Win32 System Windows XP This was a post from opera.. so i guess its either fixed or it was a problem with opera. Version8.01
Build7583
PlatformWin32
SystemWindows XP

This was a post from opera.. so i guess its either fixed or it was a problem with opera.

]]> By: Sam Newman http://www.magpiebrain.com/blog/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-759 Sam Newman Wed, 15 Jun 2005 16:22:02 +0000 http://www.magpiebrain.com/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-759 Agh - forgot to rewrite that section before I published - thanks for picking that up Daniel. Agh – forgot to rewrite that section before I published – thanks for picking that up Daniel.

]]> By: Daniel Berger http://www.magpiebrain.com/blog/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-758 Daniel Berger Wed, 15 Jun 2005 16:18:05 +0000 http://www.magpiebrain.com/2005/06/15/ruby-for-java-and-c-programmers-part-2-operators-methods-and-more-on-classes/#comment-758 "The use of the ? suffix is not simply something to make the code more readable - if you don't specify the ? suffix your methods will return either 1 or 0, both of which equate to true in the ruby world." Not true. # perfectly legal def hello? return "hello" end The "?" and "!" are a convention. There is no builtin enforcement of any kind. Of course, violating this convention is a short path to a slew of nasty emails, but I digress. - Dan “The use of the ? suffix is not simply something to make the code more readable – if you don’t specify the ? suffix your methods will return either 1 or 0, both of which equate to true in the ruby world.”

Not true.

  1. perfectly legal
    def hello?
    return “hello”
    end

    The ”?” and ”!” are a convention. There is no builtin enforcement of any kind. Of course, violating this convention is a short path to a slew of nasty emails, but I digress.

    – Dan

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