How can I handle errors from Goroutines using channels in Go?

Handling Errors in Goroutines via Channels

When invoking functions within goroutines, the need often arises to handle and propagate errors. In Go, functions conventionally return both a value and an error, as seen in the example:

To execute createHashedPassword within a goroutine and facilitate error handling, a common approach is to use channels. Channels allow for bi-directional communication, enabling the sending and receiving of data.

To handle errors using channels, a custom struct can be defined to encapsulate both the result and the error:

Within the goroutine, the Result struct can be populated and sent over the channel:

In the main program, the result can be fetched from the channel and the error can be checked:

By utilizing this technique, errors can be handled effectively within goroutines, allowing for error propagation and error handling without compromising concurrency.

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