The Sidef Programming Language ======= Sidef is a modern, high-level, general-purpose programming language, inspired by Ruby, Perl 6 and Julia. ``` ** ** **** * ********* ********* * * ** * * **** ** ** ** ** ** ** ** ** ** **** *** ********* * * * ** ** ** **** * * ****** ****** * * * * * * * * * **** ** ** ** ** ** ** ** ** ** **** ****** ****** * * ** ** **** * * * ********* *** * * ** * * **** ** ** ** ** ** ** ** ** ** **** ********* ********* * ``` * The main features of Sidef include: * object-oriented programming * functional programming * functional pattern matching * optional lazy evaluation * multiple dispatch * lexical scoping * lexical closures * keyword arguments * regular expressions * runtime metaprogramming * support for using Perl modules * optional dynamic type checking * big integers, rationals, floats and complex numbers ### WWW * Gitbook: http://trizen.gitbooks.io/sidef-lang * Tutorial: https://github.com/trizen/sidef/wiki * RosettaCode: http://rosettacode.org/wiki/Sidef ## EXAMPLES ### The [Y combinator](https://en.wikipedia.org/wiki/Fixed-point_combinator#Fixed_point_combinators_in_lambda_calculus): ```ruby var y = ->(f) {->(g) {g(g)}(->(g) { f(->(*args) {g(g)(args...)})})} var fac = ->(f) { ->(n) { n < 2 ? 1 : (n * f(n-1)) } } say 10.of { |i| y(fac)(i) } #=> [1, 1, 2, 6, 24, 120, 720, 5040, 40320, 362880] var fib = ->(f) { ->(n) { n < 2 ? n : (f(n-2) + f(n-1)) } } say 10.of { |i| y(fib)(i) } #=> [0, 1, 1, 2, 3, 5, 8, 13, 21, 34] ``` ### Approximation of the [gamma function](https://en.wikipedia.org/wiki/Gamma_function): ```ruby define ℯ = Num.e define τ = Num.tau   func Γ(t, r=50) { t < r ? (__FUNC__(t + 1) / t)  : (sqrt(τ*t) * pow(t/ℯ + 1/(12*ℯ*t), t) / t) }   for i in (1..10) { say ("%.14f" % Γ(i/3)) } ``` ### ASCII generation of the [Sierpinksi triangle](https://en.wikipedia.org/wiki/Sierpinski_triangle): ```ruby func sierpinski_triangle(n) { var triangle = ['*'] { |i| var sp = (' ' * 2**i) triangle = (triangle.map {|x| sp + x + sp} + triangle.map {|x| x + ' ' + x}) } * n triangle.join("\n") } say sierpinski_triangle(4) ``` Output: ```text * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ``` ### ASCII generation of the [Mandelbrot set](https://en.wikipedia.org/wiki/Mandelbrot_set): ```ruby func mandelbrot(z, r=20) { var c = z r.times { z = (z*z + c) return true if (z.abs > 2) } return false } for y in (1 `downto` -1 `by` 0.05) { for x in (-2 `upto` 0.5 `by` 0.0315) { print(mandelbrot(Complex(x, y)) ? ' ' : '#') } print "\n" } ``` Output: ```text # # ### # ######## ######### ###### ## ## ############ # ### ################### # ############################# ############################ ################################ ################################ #################################### # # # ################################### ########### ################################### ########### ##################################### ############## #################################### #################################################### ###################################################### ######################################################################### ###################################################### #################################################### ############## #################################### ########### ##################################### ########### ################################### # # ################################### #################################### # ################################ ################################ ############################ ############################# ### ################### # ## ## ############ # ###### ######### ######## # ### # # ``` ### More examples * For more examples, please see: [https://github.com/trizen/sidef-scripts](https://github.com/trizen/sidef-scripts) ### INTERACTIVE MODE ![sidef](https://user-images.githubusercontent.com/614513/39590990-123bd3ea-4f0b-11e8-9717-abc0ec48622e.png) ### TRY IT ONLINE * https://tio.run/#sidef ### AVAILABILITY * **CPAN**: [https://metacpan.org/release/Sidef](https://metacpan.org/release/Sidef) * **PKGS.org**: [https://pkgs.org/download/Sidef](https://pkgs.org/download/Sidef) * **Arch Linux**: [https://aur.archlinux.org/packages/sidef/](https://aur.archlinux.org/packages/sidef/) * **Slackware**: [https://slackbuilds.org/repository/14.2/perl/perl-Sidef/](https://slackbuilds.org/repository/14.2/perl/perl-Sidef/) ### LICENSE AND COPYRIGHT * Copyright (C) 2013-2018 Daniel Șuteu, Ioana Fălcușan This program is free software; you can redistribute it and/or modify it under the terms of the *Artistic License (2.0)*. 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