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Assignment to entry in nil map
source link: https://yourbasic.org/golang/gotcha-assignment-entry-nil-map/
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Assignment to entry in nil map
yourbasic.org/golang
Why does this program panic?
var m map[string]float64
m["pi"] = 3.1416panic: assignment to entry in nil mapAnswer
You have to initialize the map using the make function (or a map literal) before you can add any elements:
m := make(map[string]float64)
m["pi"] = 3.1416See Maps explained for more about maps.
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