51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
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// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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package main
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import (
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s "github.com/inancgumus/prettyslice"
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)
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func main() {
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// #1: arrays and non-empty slice literals create an array.
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// For the arrays, it's explicit, but for the slices,
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// it's done implicitly, behind the scenes.
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grades := [...]float64{40, 10, 20, 50, 60, 70} // #1
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// grades := []float64{40, 10, 20, 50, 60, 70} // #4
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// #5: let's break the connection
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// #6: comment-out
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// var newGrades []float64
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// newGrades = append(newGrades, grades...)
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// #6: shortcut: []float64(nil) is a nil float64 slice
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// newGrades := append([]float64(nil), grades...)
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// #2: cheap: slicing doesn't allocate new memory (array).
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// front := grades[:3]
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// front := newGrades[:3] // #5
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// #3: sort its first segment
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// sort.Float64s(front)
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// #7: new slices look at the same backing array
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// front, front2, front3, newGrades, they all have the same backing array
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// front2 := front[:3]
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// front3 := front
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s.PrintBacking = true // #1
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s.MaxPerLine = 7 // #1
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s.Show("grades", grades[:]) // #1
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// s.Show("newGrades", newGrades) // #5
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// s.Show("front", front) // #2
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// s.Show("front2", front2) // #7
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// s.Show("front3", front3) // #7
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}
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