Conditionals and switch in Go

Branching, including switch with no condition.

func classify(n int) string {
    if n < 0 {
        return "negative"
    } else if n == 0 {
        return "zero"
    }

    switch {
    case n < 10:
        return "small"
    case n < 100:
        return "medium"
    default:
        return "large"
    }
}

How it works

1. if/else if returns early per branch.
2. A bare switch acts as an if-else chain.
3. default covers the remaining cases.

Keywords and builtins used here

• case
• default
• else
• func
• if
• int
• return
• string
• switch

The run, in numbers

Lines

16

Characters to type

189

Tokens

47

Three-star pace

85 tpm

At the three-star pace of 85 tokens a minute, this run takes about 33 seconds.

Type this snippet

Step 1 of 4 in Control flow, step 6 of 30 in Language basics.

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