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The three dots (…) in Golang is termed as Ellipsis in Golang which is used in the variadic function. The function that called with the varying number of arguments is known as variadic function. Or in other words, a user is allowed to pass zero or more arguments in the variadic function.
These dots, referred to as an ellipsis, always mean that there are additional options. For example when you see "Print..." it is indicating that there will be another step before there is anything sent to the printer.
In a Unix shell, the full stop called the dot command (.) is a command that evaluates commands in a computer file in the current execution context. In C Shell, a similar functionality is provided as the source command, and this name is seen in "extended" POSIX shells as well.
From the command go help packages:
An import path is a pattern if it includes one or more "..." wildcards, each of which can match any string, including the empty string and strings containing slashes. Such a pattern expands to all package directories found in the GOPATH trees with names matching the patterns. As a special case, x/... matches x as well as x's subdirectories. For example, net/... expands to net and packages in its subdirectories.
go [command] ./...
Here ./ tells to start from the current folder, ... tells to go down recursively.
For Example:
go list ...
In any folder lists all the packages, including packages of the standard library first followed by external libraries in your go workspace.
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