Running several goroutines (WaitGroup, ErrGroup)

Where to use WaitGroup Add method

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Why should you call Add prior to initiating the goroutines instead of during their execution while using a sync.WaitGroup?

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It makes it easier to manage the total number of goroutines

It's not important at all

Calling Add inside goroutines can lead to race conditions

It reduces the memory footprint of the program.

It allows the goroutines to be launched more quickly

It simplifies error handling within the goroutines

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