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flag: Clarifies docs for Arg(int) and FlagSet.Arg(int)

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Adds the clarification that these functions return empty
string if the requested element is not available

Added fullstops

Fixes #11664

Change-Id: I84173862bc785240f7d3ee75a5023673264d172b
Reviewed-on: https://go-review.googlesource.com/12061
Reviewed-by: Rob Pike <r@golang.org>
This commit is contained in:
Hariharan Srinath 2015-07-11 14:20:14 +05:30 committed by Rob Pike
parent 2ae77376f7
commit 4735002f58
1 changed files with 4 additions and 2 deletions
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6
src/flag/flag.go
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@ -513,7 +513,8 @@ func (f *FlagSet) NFlag() int { return len(f.actual) }
func NFlag() int { return len(CommandLine.actual) } func NFlag() int { return len(CommandLine.actual) }
// Arg returns the i'th argument. Arg(0) is the first remaining argument // Arg returns the i'th argument. Arg(0) is the first remaining argument
// after flags have been processed. // after flags have been processed. Arg returns an empty string if the
// requested element does not exist.
func (f *FlagSet) Arg(i int) string { func (f *FlagSet) Arg(i int) string {
if i < 0 || i >= len(f.args) { if i < 0 || i >= len(f.args) {
return "" return ""
@ -522,7 +523,8 @@ func (f *FlagSet) Arg(i int) string {
} }
// Arg returns the i'th command-line argument. Arg(0) is the first remaining argument // Arg returns the i'th command-line argument. Arg(0) is the first remaining argument
// after flags have been processed. // after flags have been processed. Arg returns an empty string if the
// requested element does not exist.
func Arg(i int) string { func Arg(i int) string {
return CommandLine.Arg(i) return CommandLine.Arg(i)
} }