func ExampleInsert() {
// books.capnp:
// struct Book {
// title @0 :Text;
// pageCount @1 :Int32;
// }
type Book struct {
Title string
PageCount int32
}
// Allocate a new Cap'n Proto Book struct.
_, seg, err := capnp.NewMessage(capnp.SingleSegment(nil))
if err != nil {
panic(err)
}
root, err := books.NewRootBook(seg)
if err != nil {
panic(err)
}
// Insert the book struct into the Cap'n Proto struct.
b := &Book{
Title: "War and Peace",
PageCount: 1440,
}
if err := pogs.Insert(books.Book_TypeID, root.Struct, b); err != nil {
panic(err)
}
fmt.Println(root)
// Output:
// (title = "War and Peace", pageCount = 1440)
}
func writer(out io.Writer) {
// Make a brand new empty message. A Message allocates Cap'n Proto structs.
msg, seg, err := capnp.NewMessage(capnp.SingleSegment(nil))
if err != nil {
panic(err)
}
// Create a new Book struct. Every message must have a root struct.
book, err := books.NewRootBook(seg)
if err != nil {
panic(err)
}
book.SetTitle("War and Peace")
book.SetPageCount(1440)
// Write the message to stdout.
err = capnp.NewEncoder(out).Encode(msg)
if err != nil {
panic(err)
}
}