go.blog: constants

LGTM=gri, adg, rsc
R=gri, adg, rsc
CC=golang-codereviews
https://golang.org/cl/125540043

1 files changed, 17 insertions, 0 deletions

diff --git a/content/constants/float2.go b/content/constants/float2.go
new file mode 100644
index 0000000..f43feb6
--- /dev/null
+++ b/content/constants/float2.go
@@ -0,0 +1,17 @@
+// +build OMIT
+
+package main
+
+import "fmt"
+
+func main() {
+	const Zero = 0.0
+	const TypedZero float64 = 0.0
+	// START OMIT
+	var f32 float32
+	f32 = 0.0
+	f32 = Zero      // OK: Zero is untyped
+	f32 = TypedZero // Bad: TypedZero is float64 not float32.
+	fmt.Println(f32)
+	// STOP OMIT
+}