mirror of
https://github.com/chubin/cheat.sheets
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20 lines
931 B
Plaintext
20 lines
931 B
Plaintext
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var a []int // declare a slice - similar to an array, but length is unspecified
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var a = []int {1, 2, 3, 4} // declare and initialize a slice (backed by the array given implicitly)
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a := []int{1, 2, 3, 4} // shorthand
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chars := []string{0:"a", 2:"c", 1: "b"} // ["a", "b", "c"]
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var b = a[lo:hi] // creates a slice (view of the array) from index lo to hi-1
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var b = a[1:4] // slice from index 1 to 3
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var b = a[:3] // missing low index implies 0
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var b = a[3:] // missing high index implies len(a)
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a = append(a,17,3) // append items to slice a
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c := append(a,b...) // concatenate slices a and b
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// create a slice with make
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a = make([]byte, 5, 5) // first arg length, second capacity
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a = make([]byte, 5) // capacity is optional
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// create a slice from an array
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x := [3]string{"Лайка", "Белка", "Стрелка"}
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s := x[:] // a slice referencing the storage of x
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