ruby Archives - Page 17 of 19

How to remove RVM (Ruby Version Manager) from my system

How can I remove RVM (Ruby Version Manager) from my system? 13 s 13 There’s a simple command built-in that will pull it: ...

April 29, 2022
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Why are exclamation marks used in Ruby methods?

In Ruby some methods have a question mark (?) that ask a question like include? that ask if the object in question is ...

April 29, 2022
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How do I pick randomly from an array?

I want to know if there is a much cleaner way of doing this. Basically, I want to pick a random element from ...

April 29, 2022
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How to write to file in Ruby?

I need to read the data out of database and then save it in a text file. How can I do that in ...

April 29, 2022
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How to match all occurrences of a regex

Is there a quick way to find every match of a regular expression in Ruby? I’ve looked through the Regex object in the ...

April 29, 2022
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Ruby function to remove all white spaces?

What is the Ruby function to remove all white spaces? I’m looking for something kind of like PHP’s trim()? 24 s 24 If ...

April 29, 2022
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Equivalent of “continue” in Ruby

In C and many other languages, there is a continue keyword that, when used inside of a loop, jumps to the next iteration ...

April 26, 2022
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How to check if a specific key is present in a hash or not?

I want to check whether the “user” key is present or not in the session hash. How can I do this? Note that ...

April 26, 2022
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How to generate a random string in Ruby

I’m currently generating an 8-character pseudo-random uppercase string for “A” .. “Z”: value = ""; 8.times{value << (65 + rand(25)).chr} but it doesn’t ...

April 21, 2022
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Multi-Line Comments in Ruby?

How can I comment multiple lines in Ruby? 10 s 10 #!/usr/bin/env ruby =begin Every body mentioned this way to have multiline comments. ...

April 20, 2022
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