Fix 'assignment to entry in nil map' by initializing the map with make() before assigning values to it.
The error occurs because you are trying to assign a value to a map that has not been initialized (is nil). You must initialize the map before using it.
myMap := make(map[string]int)
myMap["key"] = 10
If you need to check if a map is nil before assigning, use:
if myMap == nil {
myMap = make(map[string]int)
}
myMap["key"] = 10
The "assignment to entry in nil map" error happens when you try to put something into a container that doesn't exist yet. Think of it like trying to put a book on a shelf that hasn't been built. You must build the shelf (initialize the map) before you can place items on it.