github.com/Cleverse/go-ethereum@v0.0.0-20220927095127-45113064e7f2/rlp/encbuffer_example_test.go (about)

     1  // Copyright 2022 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package rlp_test
    18  
    19  import (
    20  	"bytes"
    21  	"fmt"
    22  
    23  	"github.com/ethereum/go-ethereum/rlp"
    24  )
    25  
    26  func ExampleEncoderBuffer() {
    27  	var w bytes.Buffer
    28  
    29  	// Encode [4, [5, 6]] to w.
    30  	buf := rlp.NewEncoderBuffer(&w)
    31  	l1 := buf.List()
    32  	buf.WriteUint64(4)
    33  	l2 := buf.List()
    34  	buf.WriteUint64(5)
    35  	buf.WriteUint64(6)
    36  	buf.ListEnd(l2)
    37  	buf.ListEnd(l1)
    38  
    39  	if err := buf.Flush(); err != nil {
    40  		panic(err)
    41  	}
    42  	fmt.Printf("%X\n", w.Bytes())
    43  	// Output:
    44  	// C404C20506
    45  }