| _Functions_ are central in Go. We'll learn about functions with a few different examples. | ||
package main |
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import "fmt" |
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| Here's a function that takes two `int`s and returns their sum as an `int`. | func plus(a int, b int) int { |
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| Go requires explicit returns, i.e. it won't automatically return the value of the last expression. | return a + b |
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} |
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| When you have multiple consecutive parameters of the same type, you may omit the type name for the like-typed parameters up to the final parameter that declares the type. | func plusPlus(a, b, c int) int { |
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return a + b + c |
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} |
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func main() { |
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| Call a function just as you'd expect, with `name(args)`. | res := plus(1, 2) |
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fmt.Println("1+2 =", res) |
1+2 = 3 |
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res = plusPlus(1, 2, 3) |
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fmt.Println("1+2+3 =", res) |
1+2+3 = 6 |
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} |