Check out example codes for "golang get string length". It will help you in understanding the concepts better.

Code Example 1

package main

import "fmt"

func main() {
    value := "cat"

    // Take length of string with len.
    length := len(value)
    fmt.Println(length)

    // Loop over the string with len.
    for i := 0; i < len(value); i++ {
        fmt.Println(string(value[i]))
    }
}

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