Table of Contents

1 Introduction

1.1 Command Line Interpreter

1.2 Hello World

1.3 Main Wafl Concepts

1.4 Introduction to the Types

2 Program Structure

2.1 Program Is an Expression

2.2 Comments

2.3 Tuples

2.4 Local Definitions

2.5 Function Definition

2.6 Named Expression Definition

2.7 No Variables

2.8 The Order of the Definitions

2.9 Conditional Expression if

2.10 Conditional Expression switch

2.11 Recursion

2.12 Libraries

3 Programming With Functions

3.1 Strict Type Checking

3.2 Automatic Type Inference

3.3 Polymorphism

3.4 Higher Order Functions

3.5 Partial Application

3.6 Lambda Functions

3.7 Lambda Closures

3.8 Operators as Functions

3.9 Dot Operator

3.10 Explicit Computation State

3.11 Cached Functions

4 Primitive Types

4.1 Literals

4.2 Operators

4.3 Conversion Functions

4.4 Integer Functions

4.5 Float Functions

4.6 String Functions

5 List Type

5.1 List Literals

5.2 Basic List Functions

5.3 Basic List Processing

5.4 Advanced List Processing

5.5 More List Functions

5.6 Functions map and mapIdx

5.7 Functions zip and cross

5.8 Functions foldr, foldl and fold

5.9 Selection Functions

5.10 Functions for Finding Elements

5.11 Functions forall and exists

5.12 Functions count and countRep

5.13 Functions sort and sortBy

5.14 Functions in and contains

5.15 Lazy Lists

6 Structured Types

6.1 Array Type

6.2 Map Type

6.3 Tuple Type

6.4 Record Type

7 Databases

7.1 Database Connection

7.2 Queries

7.3 Transactions

8 Elements of Wafl Library

8.1 Program Control

8.2 File Reading

8.3 File Writing

8.4 File Operations

8.5 Directory Operations

8.6 Regex Functions

8.7 Command Line

8.8 Web and HTTP Functions

8.9 Wafl to JSON

8.10 Wafl Program Evaluation

9 Parallelization

9.1 Wafl and Parallelization

9.2 Parallel Functions

10 Wafl Library Reference

10.1 Core Library

10.2 Binary Libraries

10.3 Wafl Libraries

11 Command Line Reference

11.1 Command Line Options

11.2 Configuration Files

11.3 ANSI Control Codes

12 Advanced

12.1 JIT

12.2 Wafl Binary Libraries

13 More Content…

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Last update: 16.09.2025.

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