Source Material

• Annotated and modified source code from the Rust version of the Polars user guide.

• I have modified this source code for learning purposes, mainly for more explicitness and/or exploring further variations on a given topic.

Usage

• Each script corresponds to a section in the Polars user guide:

1. Getting Started
2. Categorical
3. Enum
4. Data Structures
5. Contexts
6. Expressions
7. Lazy API
8. Streaming
9. Expression Operators
10. Expression Column Selections
11. Functions
12. Casting
13. Strings
14. Aggregation
15. Missing data
16. Aggregation window
17. Folds
18. List arrays
19. Struct

For example, to run the Categorical examples listed in https://docs.pola.rs/user-guide/concepts/data-types/categoricals/#categorical-data-type, use

cargo run -- -n 2

---

Installation Notes

• reqwest needs to be 11.27 to be compatible

Cargo.toml configuration:

[package]
name = "polars_rust_examples"
version = "0.1.0"
edition = "2021"

[dependencies]
my_proc_macro = { path = "./my_proc_macro" }
quote = "1.0.37"
polars = { version = "0.42.0", features = [
	"lazy",
	"dtype-categorical",
	"streaming",
	"regex",
	"strings",
	"interpolate",
	"concat_str",
	"list_eval",
	"rank",
	"round_series",
	"dtype-struct"
]}

indoc = "2.0.5"
chrono = "0.4.38"
clap = { version = "4.5.17" }
polars-arrow = "0.42.0"
rand = "0.8.5"
reqwest = { version = "0.11.27", features = ["blocking"] }
```