Julia Language String Normalization Case-Insensitive String Comparison
Example
Strings can be compared with the == operator in Julia, but this is sensitive to differences in case. For instance, "Hello" and "hello" are considered different strings.
julia> "Hello" == "Hello"
true
julia> "Hello" == "hello"
false
To compare strings in a case-insensitive manner, normalize the strings by case-folding them first. For example,
equals_ignore_case(s, t) =
normalize_string(s, casefold=true) == normalize_string(t, casefold=true)
This approach also handles non-ASCII Unicode correctly:
julia> equals_ignore_case("Hello", "hello")
true
julia> equals_ignore_case("Weierstraß", "WEIERSTRASS")
true
Note that in German, the uppercase form of the ß character is SS.
