Seed7 – The Extensible Programming Language

Summary

Welcome to the Seed7 Homepage Seed7 is a general purpose programming language designed by Thomas Mertes. It is a higher level language compared to Ada, C/C++ and Java. The Seed7 interpreter and the example programs are open-source software. There is also an open-source Seed7 compiler. The compiler translates Seed7 programs to C programs which are subsequently compiled to machine code. In Seed7 new statements and operators can be declared easily. Functions with type results and type parameters are more elegant than a template or generics concept. Object orientation is used where it brings advantages and not in places where other solutions are more obvious. Seed7 contains several concepts from Pascal, Ada, C, C++ and Java. Features of Seed7 As an extensible programming language it supports user defined statements and operators. Types are first class objects (Templates and generics can be defined easily without special syntax). Predefined constructs like arrays or for-loops are defined in libraries. Object orientation supports interfaces and multiple dispatch. Static type checking and the absence of automatic casts help to find errors at compile-time. There is an automatic memory management that works without a garbage collection process. Exception handling and source code debugging are supported. If an integer computation overflows the exception OVERFLOW_ERROR is raised. Numbers which have unlimited size are provided with the types bigInteger and bigRational. Functions, operators and statements can be overloaded. There are various predefined types like array, hash, set, struct, color, time, duration, etc. Seed7 programs are source code portable without any need to change the code. Seed7 provides a database independent API, which can connect to MySQL, MariaDB, SQLLite, PostgreSQL, Oracle, ODBC, Firebird, Interbase, Db2, Informix and SQL Server databases. Seed7 runs under Linux, various Unix versions and Windows. The interpreter and the example programs use the GPL lice...