Large Software Systems Flashcards
1
Q
how much of a programmers time is spend trying to understand the code
A
40-60%
2
Q
what is the goal of code reading
A
to build a mental model
3
Q
what are the systematic strategies for code reading
A
top down
bottom up
4
Q
describe top down code reading
A
get an understanding of context and prior assumptions
5
Q
describe bottom up code reading
A
start with individual statements
6
Q
what types of knowledge do we aim for when code reading (3)
A
knowledge of the system
general technical knowledge
domain knowledge
7
Q
how can we introduce new features in a large software system
A
planned downtime
run two copies of the server, update and test one
perform cut
8
Q
each new line of code adds… (5)
A
maintenance
bug risk
time
testing
reviewing
