Comparing Strings in Swift 3 gives false results (Linux)

问题

I don't understand the way Swift compares strings.

Swift (3.0.2) on Linux:

print("2" < "=") //returns false

but other languages such as Ruby:

p("2:" < "=:") #returns true

It seems we should have swift returning true since "2" comes before "=" in ASCII order. Is it a bug or do I miss something?

回答1:

From the comments, it seems that you are testing this on Linux only. There is an open bug how Swift handles char ordering on Linux, see SR-530

---

Original answer:

Ruby's p returns object passed as its argument.

Equivalent comparison would be Ruby puts vs Swift print. Both return (almost) nothing.

来源：https://stackoverflow.com/questions/42317699/comparing-strings-in-swift-3-gives-false-results-linux