convert learning-tasks slides to mdbook

Author: szabgab

books/learning-tasks/book.toml

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+[book]
+authors = ["Gabor Szabo"]
+language = "en"
+src = "src"
+title = "Rust Learning Tasks"
+
+# Add github icon to the menu
+[output.html]
+git-repository-url = "https://github.com/szabgab/rust.code-maven.com"
+git-repository-icon = "fa-github"
+edit-url-template = "https://github.com/szabgab/rust.code-maven.com/edit/main/books/learning-tasks/{path}"
+
+# Handle Youtube video embedding and the footer
+[preprocessor.embedify]
+footer.enable = true
+footer.message = "Copyright © 2025 • Created with ❤️  by [Gábor Szabó](https://szabgab.com/)"
+
+
+
+

books/learning-tasks/src/SUMMARY.md

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+# Summary
+
+- [Learning tasks](./index.md)
+
+- [Learning tasks](./rust/learning-tasks/index.md)
+  - [Task: Setup environment](./rust/learning-tasks/lt-setup-environment.md)
+  - [Task: Print Hello World](./rust/learning-tasks/lt-hello-world.md)
+  - [Exercise: Hello world](./rust/learning-tasks/lt-exercise-hello-world.md)
+  - [Task: Get input from command line and print it](./rust/learning-tasks/lt-get-input-from-command-line-and-print-it.md)
+  - [Hello Foo](./rust/learning-tasks/lt-hello-foo.md)
+  - [Task: Get two numbers from the command line and do some calculations on them](./rust/learning-tasks/lt-get-two-numbers-from-the-command-line.md)
+  - [Set type of numbers](./rust/learning-tasks/lt-set-type-of-numbers.md)
+  - [get two numbers from args and add them together](./rust/learning-tasks/lt-get-two-numbers-from-args.md)
+  - [add protection to args (if , len)](./rust/learning-tasks/lt-add-protection-to-getting-args.md)
+  - [add protection to number parsing](./rust/learning-tasks/lt-add-protection-to-number-parsing.md)
+  - [Exercise: rectangle, circle](./rust/learning-tasks/lt-exercise-rectangle-circle.md)
+  - [Task: Implement file-based counter](./rust/learning-tasks/lt-implement-file-based-counter.md)
+  - [Task: Word Count (wc)](./rust/learning-tasks/lt-word-count-wc.md)
+

books/learning-tasks/src/index.md

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+# Learning tasks

books/learning-tasks/src/rust/learning-tasks/index.md

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+# Learning tasks

books/learning-tasks/src/rust/learning-tasks/lt-add-protection-to-getting-args.md

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+# add protection to args (if , len)
+
+
+```rust
+if args.len() {
+    eprintln!("{}", args[0]);
+}
+```
+
+
+

books/learning-tasks/src/rust/learning-tasks/lt-add-protection-to-number-parsing.md

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+# add protection to number parsing

books/learning-tasks/src/rust/learning-tasks/lt-exercise-hello-world.md

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+# Exercise: Hello world
+
+* Intsall Rust
+* Install VS Code or whatever IDE you prefer
+* Install rust-analyzer
+* Create a new crate
+* run the Hello World
+
+

books/learning-tasks/src/rust/learning-tasks/lt-exercise-rectangle-circle.md

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+# Exercise: rectangle, circle
+
+* Handle overflow
+
+* Read, Write file with oneliners
+
+

books/learning-tasks/src/rust/learning-tasks/lt-get-input-from-command-line-and-print-it.md

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+# Task: Get input from command line and print it

books/learning-tasks/src/rust/learning-tasks/lt-get-two-numbers-from-args.md

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+# get two numbers from args and add them together
+
+```rust
+let args = std::env::args().collect::<Vec<String>>()
+let x = &args[1].parse::<u32>().unwrap();
+let y = &args[2].parse::<u32>().except("Oh oh");
+```
+
+