Basics

• Intro
• Ruby
• Relational
• Alf in Ruby
• Alf in Shell

Operators

• allbut
• extend
• frame
• group
• image
• intersect
• join
• matching
• minus
• not_matching
• page
• project
• rank
• rename
• restrict
• summarize
• ungroup
• union
• unwrap
• wrap

Predicates

• among
• between
• contradiction
• eq
• gt
• gte
• lt
• lte
• native
• neq
• tautology

Aggregators

• avg
• concat
• count
• max
• min
• stddev
• sum
• variance