Swim your way through a new code base

Avoid D!owning

Engineer @ Red Hat @roguelynn

roguelynn.com

LYNN ROOT

DIVING

Top-down

Work flow

The Code

Lifesavers

Purpose

Architecture

Break it apart

Lather, rinse, repeat

Purpos"

What does it do?

What problems does it solve?

Strengths & weaknesses?Competitors?

A!chitectur"

What are the components?

How do pieces fit together?

B!ea# it apart

What’s this chuck’s purpose?

How does it fit with other components?

Lathe$, !ins", !epeat

Go with the flow

User

Admin

Manager

Developer

U%e$

Target audience?

How is it used?

Learning curve?

Admin

How are users set up?

How is it maintained?

How does it work with their systems?

Manage$

What are the goals?

Release cycle & pressure dates?

Other teams?

Develope$

How to submit & fix a bug?

How is the code tested?

Go-to people?

Ease in

File Hierarchy

Dependencies

Tools

Challenges

Fil" Hierarch&

Match up with architecture

Docs, src, tests

stdlib, modules, & third-party libraries

Top-down

Dependencies

OS & hardware reqs

Software reqs

Build reqs

Tools

git log

git blame

git-by-a-bus

Challeges

Write docs

Fix bugs

Increase test coverage

Lifesavers

Mento$

Internal Mentor

External Mentor

Manager

Research

Personal/Private Wiki

Bookmarks

Old-fashioned post-its

Readings

The Pragmatic Programmer

Cookbooks

The Developer’s Code

New Programmer’s Survival Guide

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