Method description:
Perform copy and replacement operations between different buffers.
Copy data from the source buffer and replace it at the specified location in the target buffer.
Grammar:
Receive parameters:
targetBuffer Target buffer, buffer to perform copy replacement
targetStart The starting position of target buffer data replacement
sourceStart The starting position of source buffer data copy
sourceEnd The end position of source buffer data copy
Example:
In this example, the data between 16 and 20 of buf1 is extracted, the data is copied to buf2, and replacement starts from position 8 of buf2.