Use strconv instead of fmt in values' String funcs

The existing implementation of flag values with fmt package uses
more memory and works slower than the implementation with strconv
package.

1 files changed, 2 insertions, 5 deletions

diff --git a/int32.go b/int32.go
index 41659a9..9b95944 100644
--- a/int32.go
+++ b/int32.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- int32 Value
 type int32Value int32
@@ -23,7 +20,7 @@ func (i *int32Value) Type() string {
 	return "int32"
 }
 
-func (i *int32Value) String() string { return fmt.Sprintf("%v", *i) }
+func (i *int32Value) String() string { return strconv.FormatInt(int64(*i), 10) }
 
 func int32Conv(sval string) (interface{}, error) {
 	v, err := strconv.ParseInt(sval, 0, 32)