ruby Archives - Page 10 of 19

Why is division in Ruby returning an integer instead of decimal value?

For example: 9 / 5 #=> 1 but I expected 1.8. How can I get the correct decimal (non-integer) result? Why is it ...

May 17, 2022
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Ruby – test for array

What is the right way to: is_array("something") # => false (or 1) is_array(...

May 17, 2022
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What is the Ruby (spaceship) operator?

What is the Ruby <=> (spaceship) operator? Is the operator implemented by any other languages? 6 Answers 6

May 17, 2022
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Failed to build gem native extension (installing Compass)

When I attempt to install the latest version of compass (https://rubygems.org/gems/compass/versions/1.0.0.alpha.17), I get the following error. ERROR: Error installing compass: ERROR: Failed to ...

May 17, 2022
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gem eventmachine fatal error: ‘openssl/ssl.h’ file not found

Just installed El Capitan and can’t install gem eventmachine 1.0.7. openssl is at 1.0.2a-1. Tried to use --with-ssl-dir but it seems ignored. Reported ...

May 17, 2022
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how to get the current working directory’s absolute path from irb

I’m running Ruby on Windows though I don’t know if that should make a difference. All I want to do is get the ...

May 17, 2022
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What are all the common ways to read a file in Ruby?

What are all the common ways to read a file in Ruby? For instance, here is one method: fileObj = File.new($fileName, "r") while ...

May 17, 2022
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How do I dump an object’s fields to the console?

When I’m running a simple Ruby script, what’s the easiest way to dump an object’s fields to the console? I’m looking for something ...

May 17, 2022
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Does ruby have real multithreading?

I know about the “cooperative” threading of ruby using green threads. How can I create real “OS-level” threads in my application in order ...

May 17, 2022
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Blocks and yields in Ruby

I am trying to understand blocks and yield and how they work in Ruby. How is yield used? Many of the Rails applications ...

May 16, 2022
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