what do the three dots in the golang code below mean? The penultimate line:
func Load(g *gin.Engine, mw ...gin.HandlerFunc) *gin.Engine {
g.Use(middleware.NoCache)
g.Use(middleware.Options)
g.Use(middleware.Secure)
g.Use(mw...) //
return g
}
then the type of mu is [] gin.HandelerFunc
which is equivalent to entering all the elements in slice into the function
in the syntax of JS,PHP,Ruby, it should be called the expansion operator (escape
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