In Ruby, it’s considered a better practice to use ranges when generating random numbers. This rule is important because it promotes the use of more idiomatic Ruby code and enhances readability. Using a range to generate a random number clearly shows the minimum and maximum values, which makes the code easier to understand.
Non-compliant code, such as rand(42) + 1, is less clear because it’s not immediately obvious what the range of possible values is. This can lead to confusion and potential bugs in the code.
To follow this rule, use a range when generating random numbers. For example, rand(1..42) is a much clearer way of generating a random number between 1 and 42. This makes it obvious to anyone reading the code what the range of possible values is, thus improving the readability and maintainability of your code.
Non-Compliant Code Examples
rand(42)+1
Compliant Code Examples
rand(1..42)
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How to use this rule
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rulesets:- ruby-code-style # Rules to enforce Ruby code style.
Create a static-analysis.datadog.yml with the content above at the root of your repository
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