UCB CS61A fall 2020 Solutions for All Discussions, Labs, Projects, and Homeworks
License: MIT License
Course Website: https://inst.eecs.berkeley.edu/~cs61a/fa20/
This repository contains my solutions for all labs, discussions (except for scheme, not really interest in it), projects and homeworks for the course.
All optional questions are solved.
Really appreciate being able to tag along and study this course, it is very kind of them to make this available for everyone. Thanks so much for helping folks outside of UCB's enrolled students.
` def apply_status(status, bee, length):
"""Apply a status to a BEE that lasts for LENGTH turns."""
# BEGIN Problem Optional 4
"*** YOUR CODE HERE ***"
old_action = bee.action
new_action = status(bee.action, bee)
def action(gamestate):
nonlocal length
if length > 0:
new_action(gamestate)
length -= 1
else:
if status == make_scare:
bee.direction = True
old_action(gamestate)
bee.action = action
`
关于这个length的问题。如果这个bee的蜜蜂被 使用多次 apply_status ，就会有一排apply_status 创建的frame。
但似乎 bee 的action 只会指向最新的action ，在最新的
’ apply_status‘ 创建的frame 下。 减去length就 只减 最新frame 下的 length。那么 之前所有 apply_status 的 frame 下的 length 就没有被减到呀。
为什么能过呢？
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