args... still needs charset minimums (how?)

pwgenerator/funcs_charset.go

@@ -18,6 +18,20 @@ func (c *CharSet) Less(i, j int) (isBefore bool) {
 	return
 }
 
+// RandChar returns a random character from a CharSet.
+func (c *CharSet) RandChar() (char Char, err error) {
+
+	var selectIdx int
+
+	if selectIdx, err = saferRandInt(len(*c) - 1); err != nil {
+		return
+	}
+
+	char = (*c)[selectIdx]
+
+	return
+}
+
 // String returns a string from a CharSet.
 func (c *CharSet) String() (s string) {