遗留代码最大的挑战之一是帮助不了解其语言或框架的开发者理解它。使用 Copilot Chat，您可以说明自己的背景并请求解释。
示例情景
考虑下面的 COBOL 代码。若您是一名 Python 开发者（举例），可能对 COBOL 并不熟悉，这时可以让 Copilot Chat 为您解释这段代码。
IDENTIFICATION DIVISION.
PROGRAM-ID. INSERT-RECORD.
ENVIRONMENT DIVISION.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 WS-STATUS-FLAGS.
05 WS-DB-STATUS PIC X(2).
88 WS-SUCCESS VALUE "00".
05 WS-SQLCODE PIC S9(9) COMP.
05 WS-ERROR-MSG PIC X(50).
LINKAGE SECTION.
01 LS-PARAMETERS.
05 LS-PERSON-RECORD.
10 PERSON-ID PIC 9(6).
10 PERSON-NAME PIC X(50).
10 PERSON-AGE PIC 9(3).
05 LS-RESULT PIC X.
88 SUCCESS VALUE 'T'.
88 FAILED VALUE 'F'.
PROCEDURE DIVISION USING LS-PARAMETERS.
PERFORM INSERT-AND-VALIDATE
GOBACK
.
INSERT-AND-VALIDATE.
EXEC SQL
INSERT INTO persons (id, name, age)
VALUES (:PERSON-ID, :PERSON-NAME, :PERSON-AGE)
END-EXEC
IF SQLCODE = 0
EXEC SQL COMMIT END-EXEC
SET SUCCESS TO TRUE
ELSE
EXEC SQL ROLLBACK END-EXEC
SET FAILED TO TRUE
STRING "DB Error: " SQLCODE
DELIMITED BY SIZE
INTO WS-ERROR-MSG
DISPLAY WS-ERROR-MSG
END-IF
.
示例提示
您可以从 Python 开发者的视角请求对这段 COBOL 代码的解释。
I'm a Python developer. Help me better understand this code. Please provide analogies.
IDENTIFICATION DIVISION.
PROGRAM-ID. INSERT-RECORD.
ENVIRONMENT DIVISION.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 WS-STATUS-FLAGS.
05 WS-DB-STATUS PIC X(2).
88 WS-SUCCESS VALUE "00".
05 WS-SQLCODE PIC S9(9) COMP.
05 WS-ERROR-MSG PIC X(50).
LINKAGE SECTION.
01 LS-PARAMETERS.
05 LS-PERSON-RECORD.
10 PERSON-ID PIC 9(6).
10 PERSON-NAME PIC X(50).
10 PERSON-AGE PIC 9(3).
05 LS-RESULT PIC X.
88 SUCCESS VALUE 'T'.
88 FAILED VALUE 'F'.
PROCEDURE DIVISION USING LS-PARAMETERS.
PERFORM INSERT-AND-VALIDATE
GOBACK
.
INSERT-AND-VALIDATE.
EXEC SQL
INSERT INTO persons (id, name, age)
VALUES (:PERSON-ID, :PERSON-NAME, :PERSON-AGE)
END-EXEC
IF SQLCODE = 0
EXEC SQL COMMIT END-EXEC
SET SUCCESS TO TRUE
ELSE
EXEC SQL ROLLBACK END-EXEC
SET FAILED TO TRUE
STRING "DB Error: " SQLCODE
DELIMITED BY SIZE
INTO WS-ERROR-MSG
DISPLAY WS-ERROR-MSG
END-IF
.
I'm a Python developer. Help me better understand this code. Please provide analogies.
I'm a Python developer. Help me better understand this code. Please provide analogies.
示例回复
注意
以下响应为示例。Copilot Chat 的回复具有不确定性，您可能会得到与此处显示的不同的响应。
Copilot 会先提供代码的高层概览，然后逐步遍历各个操作，并以 Python 开发者容易理解的方式进行解释。它会使用类比来使说明更易于接受。响应可能以以下内容开头：
Let me explain this COBOL code using Python analogies:
High-Level Overview
This is similar to a Python function that inserts a person's record into a database with error handling.
# In Python, the COBOL divisions would be like:
# IDENTIFICATION DIVISION = module/file name
# PROGRAM-ID = function name
def insert_record():
pass
# DATA DIVISION would be like declaring these variables:
class WorkingStorage:
db_status = "" # WS-DB-STATUS
sqlcode = 0 # WS-SQLCODE
error_msg = "" # WS-ERROR-MSG
# LINKAGE SECTION is like function parameters
class PersonRecord:
def __init__(self, person_id: int, person_name: str, person_age: int):
self.person_id = person_id # PERSON-ID
self.person_name = person_name # PERSON-NAME
self.person_age = person_age # PERSON-AGE
self.success = False # LS-RESULT