In one of my projects, I need to find the file-size in megabytes again and again. This simple method helps me to convert the size of a file in bytes to megabytes. This is useful for very large files.
MEGABYTE = 1024.0 * 1024.0
def bytesToMeg bytes
bytes / MEGABYTE
end
# big file
len = File.size("Dreamweaver8-en.exe")
puts len.to_s + ' bytes' # displays 62651176 bytes
puts bytesToMeg(len).to_s + ' MB' # displays 59.7488174438477 MB
One of the uses for PDF conversion is that by going through the process of converting PDF to Word you’ll have a more easily editable document than if you didn’t do PDF conversion and tried to edit a PDF file.
The program code is pretty obvious and as you can see the method uses division. However, it is best to wrap this functionality in a method.
Technorati Tags: Convert bytes to megabytes, Ruby tricks
Posted by Satish Talim
3 responses so far ↓
1 zimbatm // Feb 6, 2007 at 3:02 pm
Or use ruby-units :
require ‘units’
# big file
len = File.size(”Dreamweaver8-en.exe”)
puts len.to_unit(’B').to(’MB’) # same here
2 satish // Feb 6, 2007 at 3:43 pm
I guess you are talking about this?
http://ruby-units.rubyforge.org/ruby-units/
I did a gem install ruby-units, but the program that you mentioned did not work? Am I making a mistake somewhere?
3 Satish Talim // Feb 14, 2007 at 2:59 pm
The following worked -
require ‘ruby-units’
# big file
len = File.size(”Dreamweaver8-en.exe”)
puts len.to_unit(’B').to(’MB’)
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