How to read only English characters

Question

I am reading a file that sometimes has Chinese and characters of languages other than English.

How can I write a regex that only reads English words/letters?

Sh

Answer 1

You need $, which means end of line:

/^[a-zA-Z]+$/

Or if you use such filtration:

strings.select { |s| /^[a-zA-Z]+$/ =~ s }
# which is equal to strings.grep /^[a-zA-Z]+$/

you can use negative filtration method with slightly simplier regex:

strings.reject { |s| /[^a-zA-Z]/ =~ s }

where [^a-zA-Z] means any non-english character.