Go R1 Day 28
progress
- Solved [Hamming Distance] on exercism.io
- Simple problem, but reminded me of how to use string split.
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- Reviewed other solutions, and found my first attempt to split the string wasn’t necessary.
Looks like I can just iterate on the string directly.
I skipped this as it failed the first time.
The error is:
invalid operation: x != b[i] (mismatched types rune and byte)
.
This threw me for a loop initially, as I’m familar with .NET char
datatype.
Golang doesn’t have a char data type. It uses byte and rune to represent character values. The byte data type represents ASCII characters and the rune data type represents a more broader set of Unicode characters that are encoded in UTF-8 format. Go Data Types
Explictly casting the data types solved the error. This would be flexibly for UTF8 special characters.
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With this simple test case, it’s it’s subjective if I’d need rune
instead of just the plain ascii byte
, so I finalized my solution with byte(x)
instead.
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