{"id":7769,"date":"2023-01-05T06:00:48","date_gmt":"2023-01-05T04:00:48","guid":{"rendered":"http:\/\/www.glc.us.es\/~jalonso\/exercitium\/?p=7769"},"modified":"2023-04-16T18:14:14","modified_gmt":"2023-04-16T16:14:14","slug":"05-ene-23","status":"publish","type":"post","link":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/05-ene-23\/","title":{"rendered":"Valor de una expresi\u00f3n aritm\u00e9tica b\u00e1sica"},"content":{"rendered":"<p>Usando el <a href=\"https:\/\/bit.ly\/43EuWL4\">tipo de las expresiones aritm\u00e9ticas b\u00e1sicas<\/a>, definir la funci\u00f3n<\/p>\n<pre lang=\"text\">\n   valor :: Expr -> Int\n<\/pre>\n<p>tal que <code>valor e<\/code> es el valor de la expresi\u00f3n aritm\u00e9tica <code>e<\/code>. Por ejemplo,<\/p>\n<pre lang=\"text\">\n   valor (P (C 2) (S (C 3) (C 7)))  ==  20\n<\/pre>\n<p><b>Soluciones<\/b><\/p>\n<p>A continuaci\u00f3n se muestran las <a href=\"#haskell\">soluciones en Haskell<\/a> y las <a href=\"#python\">soluciones en Python<\/a>.<\/p>\n<p><a name=\"haskell\"><\/a><br \/>\n<b>Soluciones en Haskell<\/b><\/p>\n<pre lang=\"haskell\">\nimport Expresion_aritmetica_basica (Expr(..))\n\nvalor :: Expr -> Int\nvalor (C x)   = x\nvalor (S x y) = valor x + valor y\nvalor (P x y) = valor x * valor y\n<\/pre>\n<p><a name=\"python\"><\/a><br \/>\n<b>Soluciones en Python<\/b><\/p>\n<pre lang=\"python\">\nfrom src.expresion_aritmetica_basica import Expr, C, S, P\n\ndef valor(e: Expr) -> int:\n    match e:\n        case C(x):\n            return x\n        case S(x, y):\n            return valor(x) + valor(y)\n        case P(x, y):\n            return valor(x) * valor(y)\n    assert False\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Usando el tipo de las expresiones aritm\u00e9ticas b\u00e1sicas, definir la funci\u00f3n valor :: Expr -> Int tal que valor e es el valor de la expresi\u00f3n aritm\u00e9tica e. Por ejemplo, valor (P (C 2) (S (C 3) (C 7))) == 20 Soluciones A continuaci\u00f3n se muestran las soluciones en Haskell y las soluciones en Python&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"footnotes":"","_jetpack_memberships_contains_paid_content":false},"categories":[581],"tags":[582],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/7769"}],"collection":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/comments?post=7769"}],"version-history":[{"count":2,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/7769\/revisions"}],"predecessor-version":[{"id":8062,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/7769\/revisions\/8062"}],"wp:attachment":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/media?parent=7769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/categories?post=7769"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/tags?post=7769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}