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book
밑바닥부터 시작하는 비트코인
by
류정필
,
송재준
November 2019
Beginner to intermediate
408 pages
9h 29m
Korean
Hanbit Media, Inc.
Content preview from
밑바닥부터 시작하는 비트코인
6
장
스크립트
167
OP_PUSHDATA
4
로표현할수도있습니다.그러나그런스크립트를가지는트랜잭션은비표준으로간주됩
니다.이럴경우대부분의비트코인노드(특히,비트코인코어소프트웨어로운영되는노드)는그런트랜잭
션을전파하지않습니다.
지면상 여기에 언급하지 못한 많은 연산자가 있습니다. 이 책의 라이브러리 파일 중
op
.
py
에
서 이를 볼 수 있습니다. 비트코인에 정의된 전체 연산자는
https
://
en
.
bitcoin
.
it
/
wiki
/
Script
에서 확인할 수 있습니다.
6.4.1
파싱 및 직렬화 함수 코딩하기
이제 스크립트의 동작 원리를 이해했으니 파싱 함수를 작성할 수 있습니다.
class
Script
:
def
__init__
(
self
,
cmds
=
None
):
if
cmds
is
None
:
self
.
cmds
=
[]
else
:
self
.
cmds
=
cmds
➊
...
@classmethod
def
parse
(
cls
,
s
):
length
=
read_varint
(
s
)
➋
cmds
=
[]
count
=
0
while
count
<
length
:
➌
current
=
s
.
read
(
1
)
➍
count
+=
1
current_byte
=
current
[
0
]
➎
if
current_byte
>=
1
and
current_byte
<=
75
:
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Publisher Resources
ISBN: 9791162248294