CODEWITHSUNDEEP
rust
NateDavis
NateDavis

Reputation: 295

How do I check if a value is equal to any of two strings?

I have:

if std::env::consts::OS == "macos" {
    // Do something
} else if std::env::consts::OS == "linux" {
    // Do the same thing
}

Is there a way I could check for both of these in one line?

Upvotes: 0

Views: 2108

Answers (1)

cdhowie
cdhowie

Reputation: 169256

You could use the logical "or" operator ||:

if std::env::consts::OS == "macos" || std::env::consts::OS == "linux" {
    // Do something
}

Or match, which is a tad more terse in expressing what you want to match, but requires you to cover all possibilities, so a catch-all pattern is required even if you don't want to do anything in that case:

match std::env::consts::OS {
    "macos" | "linux" => {
        // Do something.
    },
    _ => {
        // No other match arms matched, maybe do something, or don't.
    },
};

As a side note, testing what platform you are on is usually a last resort when no other kind of detection will work. It's better to test what capabilities you have than to ask what platform you are on, for two reasons: first, that's the actual question you want to answer, and second, maybe the platforms that don't have that capability right now will sometime later.

Upvotes: 4

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