Shen Programming Language 4+

Name: Shen Programming Language
Price: 1.99 GBP
Rating: 3 (1 reviews)
Author: Tatsuya Tsuda

Optionally static typed Lisp

Tatsuya Tsuda

Designed for iPad

- 3.0 • 1 Rating

- £1.99

Description

Shen is a functional programming language that offers optional static type checking based on Sequent Calculus, Lisp macros, an integrated Prolog, an inbuilt compiler-compiler, pattern matching, Lambda Calculus consistency, and optional lazy evaluation.
Shen for iOS provides an offline interactive programming environment (REPL) based on Shen-C, which is fully conformant to the Shen standard test suite. A specialized keyboard is also provided to ease the input of symbols and special keys.

10 Jan 2022

Version 1.0.4

- Fixed issue that quotes and hyphens were automatically converted to unsupported characters in some situations due to the iOS smart punctuation feature since iOS 11.0

3.0 out of 5

1 Rating

Not perfect but worth getting

I'm glad to see this on the app store, and it's worth getting if you're interested in declarative programming. Especially so if you want to do some logic programming, because the (slightly idiosyncratic) implementation of Prolog included with Shen is the first Prolog we have on iOS. There are a couple of issues, though. One bug: if you leave it and go and look at another app, it's quite prone to crash when you resume. In addition, all you get is a REPL: there's no editor and no way of saving your code (unless I've missed it—there's also no documentation), so it's usable for small experiments but not really for anything larger. Finally, a minor point: I'd prefer a monospaced font.

The developer, Tatsuya Tsuda, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.