tyrchen / geektime-rust

我的极客时间 Rust 课程的代码仓库，随课程更新

geektime-rust

我的极客时间 Rust 第一课 的代码仓库，随课程更新

geektime-rust's Issues

06_queryer执行报错queryer-js

按README.md:

const q = require('.');
const sql = const sql = q.example_sql()
console.log(q.query(sql)); // 报`Uncaught TypeError: not enough arguments`

改用console.log(q.query(sql,"csv"))正常.

No need to set the path of the example?

geektime-rust/04_httpie/Cargo.toml

Line 9 in 3657d2f

name = "cli"

naive_lock_with_atomic.rs 运行结果不是确定的

老师您好，在第33讲中的示例中，naive_lock_with_atomic.rs 这个程序运行的最终结果，有时候是100，有时候是10，请问正常吗？

I don't understand what this line of printouts means?

geektime-rust/04_httpie/src/main.rs

Line 124 in 3c57ef4

println!();

the 5_queryer error happened with the polars 0.26 AND sqlparser = 0.30

升级了依赖后，出现了一些错误，能fix 一下吗？

error[E0308]: mismatched types
   --> queryer/src/convert.rs:95:39
    |
95  |                 Box::new(Expr::Column(Arc::new(id.to_string()))),
    |                          ------------ ^^^^^^^^^^^^^^^^^^^^^^^^ expected `str`, found struct `std::string::String`
    |                          |
    |                          arguments to this enum variant are incorrect
    |
    = note: expected struct `std::sync::Arc<str>`
               found struct `std::sync::Arc<std::string::String>`
note: tuple variant defined here
   --> /Users/nick/.cargo/registry/src/github.com-1ecc6299db9ec823/polars-plan-0.26.1/src/dsl/expr.rs:280:5
    |
280 |     Column(Arc<str>),
    |     ^^^^^^

error[E0308]: mismatched types
   --> queryer/src/convert.rs:96:17
    |
94  |             } => Ok(Expr::Alias(
    |                     ----------- arguments to this enum variant are incorrect
95  |                 Box::new(Expr::Column(Arc::new(id.to_string()))),
96  |                 Arc::new(alias.to_string()),
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `str`, found struct `std::string::String`
    |
    = note: expected struct `std::sync::Arc<str>`
               found struct `std::sync::Arc<std::string::String>`
note: tuple variant defined here
   --> /Users/nick/.cargo/registry/src/github.com-1ecc6299db9ec823/polars-plan-0.26.1/src/dsl/expr.rs:279:5
    |
279 |     Alias(Box<Expr>, Arc<str>),
    |     ^^^^^

error[E0599]: no variant or associated item named `Wildcard` found for enum `sqlparser::ast::Expr` in the current scope
   --> queryer/src/convert.rs:116:22
    |
116 |             SqlExpr::Wildcard => Ok(Self::Wildcard),
    |                      ^^^^^^^^ variant or associated item not found in `sqlparser::ast::Expr`

error[E0599]: no variant or associated item named `IsNull` found for enum `polars::prelude::Expr` in the current scope
   --> queryer/src/convert.rs:117:47
    |
117 |             SqlExpr::IsNull(expr) => Ok(Self::IsNull(Box::new(Expression(expr).try_into()?))),
    |                                               ^^^^^^ variant or associated item not found in `polars::prelude::Expr`

error[E0599]: no variant or associated item named `IsNotNull` found for enum `polars::prelude::Expr` in the current scope
   --> queryer/src/convert.rs:118:50
    |
118 |             SqlExpr::IsNotNull(expr) => Ok(Self::IsNotNull(Box::new(Expression(expr).try_into()?))),
    |                                                  ^^^^^^^^^ variant or associated item not found in `polars::prelude::Expr`

error[E0308]: mismatched types
   --> queryer/src/convert.rs:119:56
    |
119 |             SqlExpr::Identifier(id) => Ok(Self::Column(Arc::new(id.value))),
    |                                           ------------ ^^^^^^^^^^^^^^^^^^ expected `str`, found struct `std::string::String`
    |                                           |
    |                                           arguments to this enum variant are incorrect
    |
    = note: expected struct `std::sync::Arc<str>`
               found struct `std::sync::Arc<std::string::String>`

bug: HTTPie

rustc --version
rustc 1.57.0 (f1edd0429 2021-11-29)

06 queryer examples covid Segmentation fault

OS: Windows 10
cargo 1.76.0 (c84b36747 2024-01-18)

Running `D:\src\geektime-rust\target\debug\examples\covid.exe`
DataSet(shape: (0, 5)
error: process didn't exit successfully: `D:\src\geektime-rust\target\debug\examples\covid.exe` (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)
Segmentation fault

downgrade rust to 1.75.0 or upgrade polars to 0.37.0 fix the issue