String (the “owned” sort of string type) is a wrapper for a heap-allocated buffer of unicode bytes. str (the “slice” sort of string type) is a buffer of unicode bytes that may be on the stack, on the heap, or in the program memory itself.
"unicode bytes" aren't a thing; bytes implies encoding (and subscripting yielding <=0xff), otherwise it's "codepoints" (and subscripting yielding an int somewhere on the unicode planes).
Further down:
String and str are guaranteed to be valid UTF-8 encoded Unicode strings. If you’re wondering why UTF-8 is the standard encoding for Rust strings, check out the Rust FAQ’s answer to that question.
That's spot on. Please add this to the first part, too; "... buffer of UTF-8 encoded unicode bytes". or even just "encoded unicode string." It will be clear what is (and is not) meant.
Otherwise nice article! Even understandable for someone with no Rust experience.
When I see 'sort' collocated with 'string' my mind immediately jumps to the verb meaning of 'sort', not the noun meaning of 'sort', so it was a bit confusing.
I shied away from the word "kind" simply because that has a specific meaning in type theory that doesn't fit here. Higher-kinded types are a must-requested feature for Rust, and I didn't want to confuse readers into thinking this has some connection to Rust's string types.
nothrabannosir|10 years ago
"unicode bytes" aren't a thing; bytes implies encoding (and subscripting yielding <=0xff), otherwise it's "codepoints" (and subscripting yielding an int somewhere on the unicode planes).
Further down:
String and str are guaranteed to be valid UTF-8 encoded Unicode strings. If you’re wondering why UTF-8 is the standard encoding for Rust strings, check out the Rust FAQ’s answer to that question.
That's spot on. Please add this to the first part, too; "... buffer of UTF-8 encoded unicode bytes". or even just "encoded unicode string." It will be clear what is (and is not) meant.
Otherwise nice article! Even understandable for someone with no Rust experience.
brinker|10 years ago
As a kinda funny aside, I also wrote the linked-to FAQ answer. Took a number of drafts to get all the fiddly Unicode terminology right.
imron|10 years ago
When I see 'sort' collocated with 'string' my mind immediately jumps to the verb meaning of 'sort', not the noun meaning of 'sort', so it was a bit confusing.
rkangel|10 years ago
llogiq|10 years ago
brinker|10 years ago