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The context is the exercises from SICP chapter 2.5 "Systems with Generic Operations" but the function visibility management the text introduces (Example 2) doesn't seem debug-able.
```scheme
;;;; …
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Nice idea and nice package!
Maybe you are aware of this already, but in _Structure and Interpretation of Computer Programs_ by Abelson and Sussman, the pair tree is called _box-and-pointer notatio…
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**youngsterxyf**：《Linux/UNIX系统编程手册》，共64章，分6个月读完
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写下来，慢慢做，能做到更好，做不到也不用自责。
# 关于个人成长
- [ ] 编程方面, 今年是 Go 精进 Go, 继续深入底层，APUE，CSAPP 这两本，有额外的精力再来 SICP 和魔法
- [ ] 把去年的剩的计划完成
- [x] 完成一个酝酿挺久的新玩具
# 关于身体
- [x] 慢慢的少喝酒
- [x] 慢慢的保持体重
- [x] 俯卧撑仰卧起坐继…
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Monkey and banana problem
Initial state: Monkey is at door, Monkey is on floor, Box is at window, Monkey does not have a banana
```
(state at_door on_floor at_window hasnot)
```
The target st…
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Hello @jessitron
First of all thank you very much for your presentation, I watched the video and took a look at this repo.
I am relatively new to programming: I started studying Ruby a couple of years…
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Trying to build an image using this dockerfile:
```
FROM ubuntu:19.04
RUN apt-get update && apt-get install -y \
software-properties-common
RUN add-apt-repository ppa:plt/racket
RUN ap…
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Example:
https://sicp.hexlet.io/ru
https://ru.hexlet.io/
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see: https://news.ycombinator.com/item?id=13675268