# Exceptions and RAII

Demonstrations:

 1. ‹exceptions› – throwing and catching exceptions
 2. ‹stdexcept›  – the standard exception hierarchy
 3. ‹semaphore›  – automatic management of finite resources
 4. ‹overlord›   – keeping the swarm under control

Elementary exercises:

 1. ‹default›    – read a number or return a default value
 2. ‹counter›    – count the number of instances of a class
 3. ‹coffee›     – a simple model of a coffee machine
 4. ‹lock›       – (tbd) a movable mutual exclusion token

Free exercises:

 1. ‹printing›   – (tbd) printing with a monthly budget
 2. ‹car›        – (tbd) moving around car keys
 3. ‹enzyme›     – (tbd) cellular chemistry with RAII

Graded Exercises:

 1. ‹fd›         – POSIX file descriptors
 2. ‹loan›       – database-style transactions with resources
 3. ‹library›    – borrowing books
 4. ‹parse›      – a simple parser which throws exceptions
 5. ‹invest›     – we further stretch the banking story
 6. ‹linear›     – linear equations, with some exceptions