functional

Provides map, filter, and fold functions for clean, chainable transformations, as shown in examples like `mapa '$1*2' {1..3}` that output transformed lists directly.

Supports both arithmetic lambdas and named functions, with clear naming conventions ('a' for arithmetic, 'f' for named), allowing versatile function definitions as demonstrated in the usage examples.

All functions read from stdin if no arguments are provided, enabling easy composition in shell pipelines, such as in the test that lazily generates primes from input streams.

Uses suffixes like 'a' and 'f' to distinguish function types, making code more readable and reducing confusion, as explained in the naming conventions section of the README.