Exception.format_mfa

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format_mfa(module, fun, arity)

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Receives a module, fun and arity and formats it as shown in stacktraces. The arity may also be a list of arguments.

Examples

iex> Exception.format_mfa(Foo, :bar, 1)
"Foo.bar/1"

iex> Exception.format_mfa(Foo, :bar, [])
"Foo.bar()"

iex> Exception.format_mfa(nil, :bar, [])
"nil.bar()"

Anonymous functions are reported as -func/arity-anonfn-count-, where func is the name of the enclosing function. Convert to "anonymous fn in func/arity"