CS 4414/5416:
Systems Programming

Lab 1: Counter Statistics

2026-08-28

Welcome!

TODO: TAs introduce yourselves

Lab Logistics

Primary goal: Work together on something

• Fine to have small groups (up to 4)
• Grab a question sheet per person (as in lecture)
• Work on the lab assignment during the hour

A quick technical note

#[derive(PartialEq, Eq)]
struct MyStruct {
    // Fields go here
}

• The derive macro automatically implements code for the Eq and PartialEq traits.
• We’ll discuss traits and derive in more detail soon

A quick technical note

#[cfg(pred)]
struct MyStruct {
    // Fields go here
}

• The cfg macro allows for conditionally including code.
• When pred is true, code is included, when it is false it is excluded.
• Kind of like #ifdef macros in C.

Getting the material

Repo: https://github.coecis.cornell.edu/cs4414-f26/lab-01

• Go to ASSIGNMENT.md for assignment details.
• Your code should go in lib.rs
• Check progress with cargo test (see Milestones header)

Hand in question sheet at the end of session

• Who were you working with?
• How far did you get by the end?
• What questions came up?