Data commit

Task/Determine-if-a-string-is-numeric/Go/determine-if-a-string-is-numeric-1.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+    "fmt"
+    "strconv"
+)
+
+func isNumeric(s string) bool {
+    _, err := strconv.ParseFloat(s, 64)
+    return err == nil
+}
+
+func main() {
+    fmt.Println("Are these strings numeric?")
+    strings := []string{"1", "3.14", "-100", "1e2", "NaN", "rose"}
+    for _, s := range strings {
+        fmt.Printf("  %4s -> %t\n", s, isNumeric(s))
+    }
+}

Task/Determine-if-a-string-is-numeric/Go/determine-if-a-string-is-numeric-2.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+    "fmt"
+    "strconv"
+    "unicode"
+)
+
+func isInt(s string) bool {
+    for _, c := range s {
+        if !unicode.IsDigit(c) {
+            return false
+        }
+    }
+    return true
+}
+
+func main() {
+    fmt.Println("Are these strings integers?")
+    v := "1"
+    b := false
+    if _, err := strconv.Atoi(v); err == nil {
+        b = true
+    }
+    fmt.Printf("  %3s -> %t\n", v, b)
+    i := "one"
+    fmt.Printf("  %3s -> %t\n", i, isInt(i))
+}