From: Rob Biedenharn <Rob@...>
Date: 2009-02-01T00:18:37+09:00
Subject: Re: File::write() complement for File::read() ?


On Jan 31, 2009, at 3:16 AM, Suraj Kurapati wrote:

> Allow me to rephrase my question:
>
> It is currently easier to read whole files (via File::read) than to
> write whole files (via File::open and passing in a block).  This
> imbalance can be corrected by adding a File::write method, such as the
> following, to the core Ruby API.
>
>  def File.write path, data
>    File.open(path, 'wb') {|f| f << data.to_s }
>  end
>
> Are there any plans to do this?  If not, where can I file a request  
> for
> such a change?
>
> Thanks for your consideration.

$ fri File#write
--------------------------------------------------------------- IO#write
      ios.write(string)    => integer
------------------------------------------------------------------------
      Writes the given string to ios. The stream must be opened for
      writing. If the argument is not a string, it will be converted to
      a string using to_s. Returns the number of bytes written.

         count = $stdout.write( "This is a test\n" )
         puts "That was #{count} bytes of data"

      produces:

         This is a test
         That was 15 bytes of data


It's already there.  Do you ever just try these things?  This method  
is an instance method.

Your method would be incomplete without a mode.  Do you want 'w', 'a',  
'wb', etc.?

def your_write(path, data, mode='wb')
   File.open(path, mode) {|f| f.write data }
end

I don't know why you call #to_s on data if you open 'wb'.  (IO#write  
does that for you if what you pass isn't a String.)

-Rob


Rob Biedenharn		http://agileconsultingllc.com
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