Perl Errors & Edge Cases
Errors & Edge Cases for Perl: Writes the happy path well.
Who it is for
Writes the happy path well.
The behaviour people get wrong after they are already productive in the language.
You will get the most out of it if you have written Perl recently enough to read it without effort, and have been surprised by it at least once. If you are picking the language up for the first time, start with Perl Essentials and come back to this one.
It is also built for interview preparation: the questions are the ones that get asked because they separate people who have read the documentation from people who have hit the behaviour in production.
How long it takes
Planned at 90 graded questions, which is about 68 minutes of answering and roughly 18 days at five a day.
Nothing ships until every runnable snippet in it has been executed and matched against its answer.
Syllabus
What you will be asked about
This course is in production
It is planned as ten topics of ten questions, the same shape as every other course in the catalogue: one concept card, six multiple-choice questions, one predict-the-output, one ordering task and one matching task per topic. The topics themselves are mined from Perl language documentation, and nothing is listed here until the questions exist and have been executed — a syllabus written before the content is a promise, and this page only carries facts.
Free and paid courses are decided per course, not per language, and this one will be included in a subscription.
The rest of the track
Perl at every depth
Perl Essentials
Essentials for Perl: Knows the syntax, not yet the behaviour.
Perl Core
Core for Perl: Works in it, has gaps.
Perl Data & Collections
Data & Collections for Perl: Comfortable, but surprised by how containers behave.
Perl Standard Library
Standard Library for Perl: Reaches for a dependency before the built-in.
Perl Idioms & Pitfalls
Idioms & Pitfalls for Perl: Fluent, writes it like another language.
Perl Advanced
Advanced for Perl: Confident; wants the traps.
Perl Performance
Performance for Perl: Has never measured anything.
Perl Testing
Testing for Perl: Tests the code they wrote, not the code they meant.
Perl Interview Questions
Interview Questions for Perl: Preparing, and short of time.
Perl Errors & Edge Cases is being written
Start with what is already live.
Every track that is already live works the same way: five questions a day, mixed across the courses you have enrolled in.
Browse the catalogue