Add Parse A String Into Individual Fields as a Go TIL

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
 
-_1523 TILs and counting..._
+_1524 TILs and counting..._
 
 ---
 
@@ -402,6 +402,7 @@ _1523 TILs and counting..._
 - [Do Something N Times](go/do-something-n-times.md)
 - [Find Executables Installed By Go](go/find-executables-installed-by-go.md)
 - [Not So Random](go/not-so-random.md)
+- [Parse A String Into Individual Fields](go/parse-a-string-into-individual-fields.md)
 - [Replace The Current Process With An External Command](go/replace-the-current-process-with-an-external-command.md)
 - [Sleep For A Duration](go/sleep-for-a-duration.md)
 - [Upgrading From An Older Version On Mac](go/upgrading-from-an-older-version-on-mac.md)

go/parse-a-string-into-individual-fields.md

@@ -0,0 +1,39 @@
+# Parse A String Into Individual Fields
+
+Let's say you're reading in data from a file or otherwise dealing with an
+arbitrary string of data. If that string has a series of values separated by
+whitespace, you can parse it into individual fields with
+[`strings.Fields`](https://pkg.go.dev/strings#Fields).
+
+```go
+import (
+	"fmt"
+	"strings"
+)
+
+func main() {
+	data := "3 5 2 6 7 1 9"
+	fields := strings.Fields(data)
+
+	fmt.Printf("Fields: %v", fields)
+	// [3 5 2 6 7 1 9]
+}
+```
+
+Here is another example where we can see that `strings.Fields` deals with
+multiple whitespace and surrounding whitespace:
+
+```go
+import (
+	"fmt"
+	"strings"
+)
+
+func main() {
+	data := "  go  java c++ rust "
+	fields := strings.Fields(data)
+
+	fmt.Printf("%v", fields)
+	// [go java c++ rust]
+}
+```