How does side-effect imports works in go (lib/pq as example) ? | Discord Gophers | Page 1

north yoke Mar 17, 2023, 6:49 PM

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I am confused about how lib/pq functions gets called if we are just marking them as unused imports with _ I read about that and I saw it will call the init() function but that only calls sql.Register which modifies some global variable called drivers but then what ? where is the rest of the package code of lib/pq ?

buoyant field Mar 17, 2023, 6:49 PM

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in the objects it registered

north yoke Mar 17, 2023, 6:51 PM

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@buoyant field could u elaborate more on this ?

buoyant field Mar 17, 2023, 6:53 PM

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the library defines a driver, the driver contains all the "library code"

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the library, in init, will register the driver

#How does side-effect imports works in go (lib/pq as example) ?