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Add to SafariWhen comparing PicoLisp vs ATS, the Slant community recommends ATS for most people. In the question“What are the best (productivity-enhancing, well-designed, and concise, rather than just popular or time-tested) programming languages?” ATS is ranked 48th while PicoLisp is ranked 66th. The most important reason people chose ATS is:
ATS has a theorem-proving type system powerful enough to prove that its functions meet their specifications. This happens at compile time with no performance impact at runtime. This can be used to prove that an ATS program doesn't have bugs commonly found in C++ programs, like "this function never leaks memory" or "this program never attempts to divide by zero" or "this buffer never overflows" or to verify pointer arithmetic, etc.
Question Ranking
Pros
Pro Integrated database and Prolog engine
Pro Fast code execution speed
One of the fastest code execution speeds compared to other Lisp dialects.
Pro Simplicity
Compared to other Lisp dialects, it's simple and doesn't have unnecessary features.
Pro Tacit
Code written in is short and easier to understand most of the time.
Pro Foreign function interface
The language has built-in FFI for C and also interfaces with java(via ersatz)
Pro Built-in formal specification
ATS has a theorem-proving type system powerful enough to prove that its functions meet their specifications. This happens at compile time with no performance impact at runtime. This can be used to prove that an ATS program doesn't have bugs commonly found in C++ programs, like "this function never leaks memory" or "this program never attempts to divide by zero" or "this buffer never overflows" or to verify pointer arithmetic, etc.
Pro Free and open-source compiler
The compiler (ATS/Postiats) is GPLv3.
Pro Functional programming
The syntax is ML-like with the usual functional language features like pattern matching and tail-call optimization.
Pro High-performance systems language
ATS works as a low-level systems language. ATS programs have performance and footprint comparable to programs written in C/C++.
Pro Good module system
Similar to Modula-3. This makes ATS a viable choice even for large-scale projects.
Pro Safe concurrency
ATS can prove its concurrent programs have no deadlocks or race conditions.
Cons
Con Lack of Floating point data type
The language does not have floating point numbers only scaled fix-point numbers. Scaling of numbers is more work than directly working with floats.
Con No Windows version
But it does run on Cygwin.
