{"id":1282,"date":"2019-08-03T23:54:01","date_gmt":"2019-08-03T21:54:01","guid":{"rendered":"http:\/\/www.albertopasca.it\/whiletrue\/?p=1282"},"modified":"2020-04-29T19:09:50","modified_gmt":"2020-04-29T17:09:50","slug":"swift-create-filled-array-using-map","status":"publish","type":"post","link":"https:\/\/www.albertopasca.it\/whiletrue\/swift-create-filled-array-using-map\/","title":{"rendered":"SWIFT &#8211; Create filled array using map"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A useful trick using <em>.map:<\/em><\/p>\n\n\n\n<!--more-->\n\n\n\n<h3 class=\"wp-block-heading\">Random Int value array:<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\">array[0] = 1\narray[1] = 5\narray[2] = 3\n[\u2026]\narray[30] = 1<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">The function, using <strong>map<\/strong> become:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>func generateArray() -> &#91;Int] {\n  let monthDays = Calendar.current.numberOfDaysInMonthForDate(Date())\n\n   let array = (0..&lt;monthdays).map { _ -> Int in\n     return Int(Double(arc4random_uniform(5)))\n  }\n\n  return array\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Array of <strong>IndexPaths<\/strong>:<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>let allIndexes: &#91;IndexPath] = (0..&lt;10).map {\n    return IndexPath(row: $0, section: 0)\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">And so on&#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Enjoy mapping!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A useful trick using .map:<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1,12,11,3],"tags":[],"class_list":["post-1282","post","type-post","status-publish","format-standard","hentry","category-generic","category-macos","category-mobile","category-swift"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SWIFT - Create filled array using map - while (true) {\u00a0}<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.albertopasca.it\/whiletrue\/swift-create-filled-array-using-map\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SWIFT - Create filled array using map - while (true) {\u00a0}\" \/>\n<meta property=\"og:description\" content=\"A useful trick using .map:\" \/>\n<meta property=\"og:url\" content=\"http:\/\/www.albertopasca.it\/whiletrue\/swift-create-filled-array-using-map\/\" \/>\n<meta property=\"og:site_name\" content=\"while (true) {\u00a0}\" \/>\n<meta property=\"article:published_time\" content=\"2019-08-03T21:54:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-04-29T17:09:50+00:00\" \/>\n<meta name=\"author\" content=\"Alberto Pasca\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@lupasca\" \/>\n<meta name=\"twitter:site\" content=\"@lupasca\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alberto Pasca\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"http:\\\/\\\/www.albertopasca.it\\\/whiletrue\\\/swift-create-filled-array-using-map\\\/#article\",\"isPartOf\":{\"@id\":\"http:\\\/\\\/www.albertopasca.it\\\/whiletrue\\\/swift-create-filled-array-using-map\\\/\"},\"author\":{\"name\":\"Alberto Pasca\",\"@id\":\"https:\\\/\\\/www.albertopasca.it\\\/whiletrue\\\/#\\\/schema\\\/person\\\/d3cf0df774eb4aac797f246a795e9fac\"},\"headline\":\"SWIFT &#8211; 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