dev 3

go-client/libs/calc.go

@@ -0,0 +1,25 @@
+package libs
+
+import (
+	"math/rand"
+	"time"
+)
+
+var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+
+func randStr(n int) string {
+	b := make([]rune, n)
+	for i := range b {
+		b[i] = letters[rand.Intn(len(letters))]
+	}
+	return string(b)
+}
+
+func TradingTime(t time.Time) bool {
+	if t.Weekday() == time.Saturday || t.Weekday() == time.Sunday {
+		return false
+	}
+	second := t.Hour()*3600 + t.Minute()*60 + t.Second()
+	return (second >= 9*3600+30*60 && second <= 11*3600+30*60) ||
+		(second >= 13*3600 && second <= 15*3600)
+}