I faced an issue implementing BusTub P1 correctly. It’s all about move semantic and resource ownership. I found the “copy-and-swap idiom” very helpful in solving this problem. Here’s a brief explan...

LL grammar is a kind of top down grammar (自顶向下文法). 自顶向下 的两个动作：匹配，推导（展开）。 从开始符出发，推导出给定的串。 LL grammar Definition: see https://en.wikipedia.org/wiki/LL_grammar. 对于 \(\text{LL}(k)...

It’s a platform-independent language that abstracts above object code. Intermediate code 栈式中间代码-后缀式 四元式 (op, arg1, arg2, result) [!INFO] 如果你是江西师大的学生，那还需要知道以下注意事项： 输入输出的写法： ...

FUCK ZFY ZZS 流程 建立概念模型 ER图转化为关系模型 若ER图过大，则需先画分ER图再合并。 建立概念模型：画ER图 方框表示实体 菱形表示联系 椭圆表示属性 ER图转化为关系模型 模型转化: 实体 -> 表 联系 -> 关系 做一下书上 P239 F7,8,9 标出表名，属性，主码（下划线） 形式：...

Recently, I ran into an issue with the NVIDIA driver after an unexpected Windows update. The update reordered the BIOS boot entries, and when I subsequently booted into Fedora 43, the NVIDIA kernel...

程程编里不是这样的！😡应该多让我看看libarchive源码☝，然后提升我的好感度。偶尔让我发现一些灵感，然后在那个特殊函数时跟我有特殊返回值☺️。最后在某个我trace了很久才找到的语句，让我发现错误😮，我终于找到问题根源☺️，然后我成功提交PR啊😃。一怎么上来给我跳转到libiconv！😡？程程编里根本不是这样！😡我不接受！！😡😡😡 If you found you can’t use...

At least the following three tables are involved in semantic analysis: Symbol table stores information about identifiers seen by semantic parser. Type table Constants table Internal repres...

Terminology Triplet Triplet describes the platform. It consists of three components: ISA-OS-libc. ISA (Instruction Set Architecture) OS (Operating System) libc: the version of libc used o...

Conan is one of the most popular cross-platform package managers in cpp world. But it’s also HARD to use since it have a really bad documentation. In this article, I’ll give some notes on how to u...

$\text{LR}(k)$ parsing is a bottom-up grammar parsing method, for which: $\text{LR}$ stands for “Read from Left to Right, Derive Rightmost Word”. $k$ stands for the number of character to look...