Timeline for How to check whether a string contains a substring in Ruby
Current License: CC BY-SA 4.0
10 events
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| Mar 9, 2023 at 0:54 | history | edited | Clint Pachl | CC BY-SA 4.0 |
Show and alternative solution (thanks @ShadowRanger), and fix documentation URL.
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| Mar 9, 2023 at 0:34 | history | edited | Clint Pachl | CC BY-SA 4.0 |
fix error about return value
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| Feb 23, 2023 at 15:42 | comment | added | ShadowRanger |
@scrthq: Or for minimal characters for code golfing, use === instead, /bcd/i==='aBcDe'. .match? is definitely more descriptive for normal code though.
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| Mar 7, 2020 at 17:53 | comment | added | scrthq |
alternatively, use match? to return a boolean: /bcd/i.match?('aBcDe')
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| Feb 14, 2020 at 3:59 | history | edited | the Tin Man | CC BY-SA 4.0 |
added 21 characters in body
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| Mar 16, 2018 at 13:23 | comment | added | slindsey3000 | !!('aBcDe' =~ /bcd/i) will evaluate to true or false. Use the !! idiom | |
| Mar 16, 2018 at 13:21 | comment | added | slindsey3000 | This does NOT evaluate as true. It evaluates to 1 which is not true. | |
| Mar 28, 2016 at 20:33 | comment | added | the Tin Man |
Using a regular expression this way isn't necessarily going to be faster than using 'aBcDe'.downcase.include?('bcd'). Regex have their purpose but don't use them when the built-in methods are faster. Benchmarking with the actual data being tested can reveal much.
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| Apr 24, 2015 at 22:01 | comment | added | Jacklynn |
If you are matching against user input and using this technique, remember to use Regexp.escape on the string. For most use cases, some_str.include? substr.downcase() should work faster and be more readable.
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| Jul 1, 2014 at 10:20 | history | answered | Clint Pachl | CC BY-SA 3.0 |