Arrays and slices in Odin

A fixed week of temperatures and a slice borrowing three days of it.

package main

import "core:fmt"

main :: proc() {
    // A fixed array's length is part of the type.
    week := [7]int{61, 68, 74, 79, 72, 65, 58}

    // Slicing borrows a view: pointer plus length, same memory.
    midweek := week[2:5]
    fmt.println("midweek:", midweek)
    fmt.println("len", len(midweek), "first", midweek[0])

    midweek[0] += 1
    fmt.println("warmed wednesday:", week[2])
}

How it works

1. [7]int{...} fixes the length into the type.
2. week[2:5] is a slice: pointer plus length onto the same memory.
3. Writing through the slice warms Wednesday in the array underneath.

Keywords and builtins used here

• import
• int
• len
• package
• proc

The run, in numbers

Lines

16

Characters to type

370

Tokens

95

Three-star pace

70 tpm

At the three-star pace of 70 tokens a minute, this run takes about 81 seconds.

Type this snippet

Step 1 of 3 in Collections, step 10 of 27 in Language basics.

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