Parsing
If you like applying Parsing, every challenge here gives you a chance to practice it on a real industry brief.
- DesignAdvancedNew
Design a Small Domain-Specific Language for Invoice Rules
Design a DSL grammar (BNF) covering: boolean conditions (and / or / not), comparison operators, customer-attribute references, line-attribute references, and action expressions …
- Abstraction
- Recursion
- Domain Specific Language
Programming Abstractions - CodeIntermediateNew
Implement an Expression Evaluator Using Recursion and Higher-Order Functions
Implement in Python (or TypeScript). Build a tokenizer, a recursive-descent parser producing an abstract syntax tree (AST), and a tree-walking evaluator. Use higher-order functi…
- Recursion
- Higher Order Functions
- Parsing
Programming Abstractions
How it works
From brief to credential, in six steps.
Step 01
Browse challenges aligned to your studies.
Step 02
Accept the one that fits your goals.
Step 03
Work through it with AI Copilot guidance.
Step 04
Submit for structured evaluation.
Step 05
Earn a verified credential.
Step 06
Add it to LinkedIn with one click.
Industry teams behind a decade of practitioner briefs
Hiring from this pool?
Sponsor a challenge and meet candidates through actual work.
Industry teams can shape briefs around the skills they hire for, then evaluate students on rubric-scored deliverables — not resumes.



















































































