How to Get the Local Beginning of Day Time Object in Go?

Returning a Local Beginning of Day Time Object

Suppose you want to obtain a local beginning of day time object in Go. Typically, one approach is to extract the year, month, and day components and reconstruct the new date. However, this approach may seem like a cumbersome workaround.

In fact, there is a standard library function that can accomplish this task more efficiently: the Truncate function. This function truncates the given time object to the closest multiple of the specified duration.

import "time"

func main() {
    now := time.Now()
    midnight := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
    fmt.Println(midnight)
}

In this example, we truncate the current time to the nearest multiple of 24 hours, effectively giving us the local beginning of day time object. The result will be printed to the console in the local time zone.

The Truncate function is not only efficient but also handles edge cases such as daylight savings time transitions seamlessly. Therefore, it is the preferred method for obtaining a local beginning of day time object in Go.

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