{"id":7535,"date":"2022-11-24T06:00:54","date_gmt":"2022-11-24T04:00:54","guid":{"rendered":"http:\/\/www.glc.us.es\/~jalonso\/exercitium\/?p=7535"},"modified":"2022-12-14T11:34:04","modified_gmt":"2022-12-14T09:34:04","slug":"24-nov-22","status":"publish","type":"post","link":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/24-nov-22\/","title":{"rendered":"El tipo de figuras geom\u00e9tricas"},"content":{"rendered":"<p>Se consideran las figuras geom\u00e9tricas formadas por circulos (definidos por su radio) y rect\u00e1ngulos (definidos por su base y su altura). El tipo de las figura geom\u00e9tricas se define por<\/p>\n<pre lang=\"text\">\n   data Figura = Circulo Float | Rect Float Float\n<\/pre>\n<p>Definir las funciones<\/p>\n<pre lang=\"text\">\n   area     :: Figura -> Float\n   cuadrado :: Float -> Figura\n<\/pre>\n<p>tales que<\/p>\n<ul>\n<li><code>area f<\/code> es el \u00e1rea de la figura <code>f<\/code>. Por ejemplo,<\/li>\n<\/ul>\n<pre lang=\"text\">\n     area (Circulo 1)   ==  3.1415927\n     area (Circulo 2)   ==  12.566371\n     area (Rect 2 5)    ==  10.0\n <\/pre>\n<ul>\n<li><code>cuadrado n<\/code> es el cuadrado de lado <code>n<\/code>. Por ejemplo,<\/li>\n<\/ul>\n<pre lang=\"text\">\n     area (cuadrado 3)  ==  9.0\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\">\ndata Figura = Circulo Float | Rect Float Float\n\narea :: Figura -> Float\narea (Circulo r) = pi*r^2\narea (Rect x y)  = x*y\n\ncuadrado :: Float -> Figura\ncuadrado n = Rect n n\n<\/pre>\n<p><a name=\"python\"><\/a><br \/>\n<b>Soluciones en Python<\/b><\/p>\n<pre lang=\"python\">\nfrom dataclasses import dataclass\nfrom math import pi\n\n@dataclass\nclass Figura:\n    \"\"\"Figuras geom\u00e9tricas\"\"\"\n\n@dataclass\nclass Circulo(Figura):\n    r: float\n\n@dataclass\nclass Rect(Figura):\n    x: float\n    y: float\n\ndef area(f: Figura) -> float:\n    match f:\n        case Circulo(r):\n            return pi * r**2\n        case Rect(x, y):\n            return x * y\n    assert False\n\ndef cuadrado(n: float) -> Figura:\n    return Rect(n, n)\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Se consideran las figuras geom\u00e9tricas formadas por circulos (definidos por su radio) y rect\u00e1ngulos (definidos por su base y su altura). El tipo de las figura geom\u00e9tricas se define por data Figura = Circulo Float | Rect Float Float Definir las funciones area :: Figura -> Float cuadrado :: Float -> Figura tales que area&#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":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/7535"}],"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=7535"}],"version-history":[{"count":2,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/7535\/revisions"}],"predecessor-version":[{"id":7641,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/posts\/7535\/revisions\/7641"}],"wp:attachment":[{"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/media?parent=7535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/categories?post=7535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.glc.us.es\/~jalonso\/exercitium\/wp-json\/wp\/v2\/tags?post=7535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}