Is Daylight Saving Time in Effect in Go?

Go: Checking for Daylight Saving Time

In various programming languages, such as Ruby, there exist functions like Time#dst? that provide a convenient way to determine if the current time is within Daylight Saving Time (DST). In Go, the standard library offers a similar solution.

The time.Time type in the Go standard library provides a method called IsDST. Introduced in Go 1.17 released in August 2021, this method takes the time in the configured location and returns a boolean value indicating whether DST is currently observed.

Usage:

To use the IsDST method, you can obtain the current time using the following expression:

<code class="go">now := time.Now()</code>

Once you have the current time, you can invoke IsDST to check if the time falls within DST:

<code class="go">inDST := now.IsDST()</code>

The inDST variable will contain true if the current time is within DST and false otherwise.

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