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| author | Agniva De Sarker <agnivade@yahoo.co.in> | 2019-11-11 12:02:56 +0530 |
|---|---|---|
| committer | Agniva De Sarker <agniva.quicksilver@gmail.com> | 2019-11-11 20:07:54 +0000 |
| commit | e9f8d676ae40b0ce35efb5838eec560f7b6cf1fc (patch) | |
| tree | 0cfa95a83a3a73e8eddbb6d3868a6a8ebe1005a1 /src/flag | |
| parent | 0e312f212c11b9f35fdd85bcbb6ec082bc341c17 (diff) | |
| download | go-e9f8d676ae40b0ce35efb5838eec560f7b6cf1fc.tar.gz go-e9f8d676ae40b0ce35efb5838eec560f7b6cf1fc.zip | |
flag: clarify that a flag cannot be re-defined
Fixes #31694
Change-Id: Ifb2ad2dc41c449668c0f6a4d4cfb9b583e5591f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/206126
Reviewed-by: Rob Pike <r@golang.org>
Diffstat (limited to 'src/flag')
| -rw-r--r-- | src/flag/flag.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/flag/flag.go b/src/flag/flag.go index 9fed4d82b3..6a51617524 100644 --- a/src/flag/flag.go +++ b/src/flag/flag.go @@ -314,6 +314,9 @@ const ( // A FlagSet represents a set of defined flags. The zero value of a FlagSet // has no name and has ContinueOnError error handling. +// +// Flag names must be unique within a FlagSet. An attempt to define a flag whose +// name is already in use will cause a panic. type FlagSet struct { // Usage is the function called when an error occurs while parsing flags. // The field is a function (not a method) that may be changed to point to |