changes 16 exercise solution 3 to account for only negative numbers

GoesToEleven · GoesToEleven · commit fea6fc595fe5 · 2016-03-10T12:13:07.000-08:00
diff --git a/16_exercise-solutions/03_variadic-greatest/main.go b/16_exercise-solutions/03_variadic-greatest/main.go
@@ -16,3 +16,32 @@ func main() {
 	greatest := max(4, 7, 9, 123, 543, 23, 435, 53, 125)
 	fmt.Println(greatest)
 }
+
+/*
+FYI
+For your code to also work with only negative numbers such as
+
+greatest := max(-200 -700)
+
+include this as your range statement
+for i, v := range numbers {
+	if v > largest || i == 0 {
+		largest = v
+	}
+}
+
+What does that code do?
+
+The first time through the range loop
+the index, i, will be zero
+so largest will be set to the first number
+
+Originally largest is set to the zero value for an int, which is zero
+
+Zero would be greater than any negative number
+
+if you only have negative numbers
+you need largest to be something less than zero
+
+Thanks to Ricardo G for this code improvement!
+*/
diff --git a/24_testing/00_under-development/01/sample.txt b/24_testing/00_under-development/01/sample.txt
@@ -0,0 +1,29 @@
+main.go
+
+package main
+
+import "fmt"
+
+func sup(name string) string {
+    return "Sup, " + name
+}
+
+func main() {
+    fmt.Println(sup("Ewan"))
+}
+Now our tests in, main_test.go
+
+package main
+
+import "testing"
+
+func TestSup(t *testing.T) {
+    expected := "Sup, Ewan"
+    outcome := sup("Ewan")
+    if outcome != expected {
+        t.Fatalf("Expected %s, got %s", expected, outcome)
+    }
+}
+All I do now is run go test and I get...
+
+http://ewanvalentine.io/why-go-solves-so-many-problems-for-web-developers/?utm_source=golangweekly&utm_medium=email
