{"id":575,"date":"2020-09-05T12:54:55","date_gmt":"2020-09-05T03:54:55","guid":{"rendered":"https:\/\/naoya-ono.com\/swift\/?p=575"},"modified":"2020-09-05T12:54:55","modified_gmt":"2020-09-05T03:54:55","slug":"swift-isempty","status":"publish","type":"post","link":"https:\/\/naoya-ono.com\/swift\/swift-isempty\/","title":{"rendered":"\u3010Swift\u3011\u6587\u5b57\u5217\u304c\u7a7a\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>\u6587\u5b57\u5217\u306e\u7a7a\u5224\u5b9a\u3002<\/p>\n<p>\u3069\u306e\u3088\u3046\u306b\u3084\u3063\u3066\u307e\u3059\u304b\uff1f \u307e\u3055\u304b\u6587\u5b57\u5217\u3068\u300c\u201d\u201d\u300d\u3092\u6bd4\u8f03\u3057\u3066\u306a\u3044\u3067\u3059\u3088\u306d\uff1f<\/p>\n<p>\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u53ef\u8aad\u6027\u306e\u9ad8\u3044\u66f8\u304d\u65b9\u3068\u3001\u3042\u307e\u308a\u3088\u304f\u306a\u3044\u66f8\u304d\u65b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"hh hh5 pastel-bc\" id=\"i-0\">\u53ef\u8aad\u6027\u304c\u9ad8\u3044\u66f8\u304d\u65b9<\/h2>\n<p>\u4e00\u756a\u826f\u3044\u306e\u306f<span class=\"keiko_yellow\"><strong>isEmpty\u30d7\u30ed\u30d1\u30c6\u30a3<\/strong><\/span>\u3092\u4f7f\u3063\u3066\u5224\u5b9a\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n<p>\u540d\u524d\u304b\u3089\u3082\u5206\u304b\u308b\u3068\u304a\u308a\u300cisEmpty\u300d\u3064\u307e\u308a \u300c\u7a7a\u3067\u3059\u300d\u3063\u3066\u66f8\u3044\u3066\u3042\u308b\u306e\u3067\u3001\u6587\u5b57\u5217\u304c\u7a7a\u304b\u3069\u3046\u304b\u306f\u3053\u308c\u3092\u4f7f\u3046\u306e\u304c\u30d9\u30b9\u30c8\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u7d50\u679c\u306fBool\u5024\u3067\u8fd4\u3063\u3066\u304f\u308b\u306e\u3067\u3001true\u306a\u3089\u7a7a\u3001false\u306a\u3089\u3001\u7a7a\u3058\u3083\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-swift\" data-lang=\"Swift\"><code>import UIKit\n\nvar str = \"\"\n\nif str.isEmpty {\n&nbsp; &nbsp; print(\"\u7a7a\u3067\u3059\")\n}else {\n&nbsp; &nbsp; print(\"\u7a7a\u3058\u3083\u3042\u308a\u307e\u305b\u3093\")\n}<\/code><\/pre>\n<\/div>\n<p>\u5b9f\u969b\u306b\u3001\u52d5\u4f5c\u3092\u78ba\u8a8d\u3059\u308b\u3068\u304d\u3061\u3093\u3068\u7a7a\u5224\u5b9a\u3067\u304d\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p class=\"hh hh21\">\u7a7a\u306e\u5834\u5408<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/naoya-ono.com\/swift\/wp-content\/uploads\/2020\/09\/swift-isempty1.png\" alt=\"\" width=\"858\" height=\"392\" class=\"alignnone wp-image-578 size-full\" srcset=\"https:\/\/naoya-ono.com\/swift\/wp-content\/uploads\/2020\/09\/swift-isempty1.png 858w, https:\/\/naoya-ono.com\/swift\/wp-content\/uploads\/2020\/09\/swift-isempty1-300x137.png 300w, https:\/\/naoya-ono.com\/swift\/wp-content\/uploads\/2020\/09\/swift-isempty1-768x351.png 768w\" sizes=\"(max-width: 858px) 100vw, 858px\"><\/p>\n<p class=\"hh hh21\">\u7a7a\u3058\u3083\u306a\u3044\u5834\u5408<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/naoya-ono.com\/swift\/wp-content\/uploads\/2020\/09\/swift-isempty2.png\" alt=\"\" width=\"1024\" height=\"378\" class=\"alignnone wp-image-577 size-full\" srcset=\"https:\/\/naoya-ono.com\/swift\/wp-content\/uploads\/2020\/09\/swift-isempty2.png 1024w, https:\/\/naoya-ono.com\/swift\/wp-content\/uploads\/2020\/09\/swift-isempty2-300x111.png 300w, https:\/\/naoya-ono.com\/swift\/wp-content\/uploads\/2020\/09\/swift-isempty2-768x284.png 768w, https:\/\/naoya-ono.com\/swift\/wp-content\/uploads\/2020\/09\/swift-isempty2-940x347.png 940w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/p>\n<p><a href=\"https:\/\/developer.apple.com\/documentation\/swift\/string\/2946268-isempty\" class=\"btn raised blue-bc strong\">isEmpty\u306e\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/a><br \/>\n<script src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\" async><\/script><br \/>\n<ins class=\"adsbygoogle\" style=\"display: block; text-align: center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-4166043434922569\" data-ad-slot=\"7750996733\"><\/ins><br \/>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/p>\n<h2 class=\"hh hh5 pastel-bc\" id=\"i-1\">\u7a7a\u6587\u5b57\u5224\u5b9a\u3067\u304d\u308b\u3051\u3069\u3001\u3042\u307e\u308a\u3088\u304f\u306a\u3044\u66f8\u304d\u65b9<\/h2>\n<p>\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u3082\u6587\u5b57\u5217\u306e\u7a7a\u5224\u5b9a\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u53ef\u8aad\u6027\u3092\u8003\u3048\u308b\u3068isEmpty\u3092\u4f7f\u3063\u305f\u307b\u3046\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-swift\" data-lang=\"Swift\"><code>var str = \"\"\n\nif str == \"\" {\n  print(\"\u7a7a\u3067\u3059\")\n}\n\nif str.count == 0 {\n  print(\"\u7a7a\u3067\u3059\")\n}<\/code><\/pre>\n<\/div>\n<div id=\"rinkerid180\" class=\"yyi-rinker-contents  yyi-rinker-postid-180 yyi-rinker-img-m yyi-rinker-catid-5 \">\n<div class=\"yyi-rinker-box\">\n<div class=\"yyi-rinker-image\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/www.amazon.co.jp\/dp\/B086VVQ3DJ?tag=naoya-ono-22&amp;linkCode=ogi&amp;th=1&amp;psc=1\" rel=\"nofollow\" class=\"yyi-rinker-tracking\" data-click-tracking=\"amazon_img 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\" data-vars-click-id=\"amazon_img 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/m.media-amazon.com\/images\/I\/51iY70Z3fKL._SL160_.jpg\" width=\"113\" height=\"160\" class=\"yyi-rinker-main-img\" style=\"border: none;\"><\/a>\t\t\t\t\t<\/div>\n<div class=\"yyi-rinker-info\">\n<div class=\"yyi-rinker-title\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.amazon.co.jp\/dp\/B086VVQ3DJ?tag=naoya-ono-22&amp;linkCode=ogi&amp;th=1&amp;psc=1\" rel=\"nofollow\" class=\"yyi-rinker-tracking\" data-click-tracking=\"amazon_title 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\" data-vars-amp-click-id=\"amazon_title 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\">\uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus<\/a>\t\t\t\t\t\t\t<\/div>\n<div class=\"yyi-rinker-detail\">\n<div class=\"credit-box\">created by&nbsp;<a href=\"https:\/\/oyakosodate.com\/rinker\/\" rel=\"nofollow noopener\" target=\"_blank\">Rinker<\/a><\/div>\n<div class=\"price-box\">\n\t\t\t\t\t\t\t<\/div>\n<\/p><\/div>\n<ul class=\"yyi-rinker-links\">\n<li class=\"amazonkindlelink\">\n\t\t\t\t\t\t<a href=\"https:\/\/www.amazon.co.jp\/dp\/B086VVQ3DJ?tag=naoya-ono-22&amp;linkCode=ogi&amp;th=1&amp;psc=1\" rel=\"nofollow\" class=\"yyi-rinker-link yyi-rinker-tracking\" data-click-tracking=\"amazon_kindle 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\" data-vars-amp-click-id=\"amazon_kindle 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\">Kindle<\/a>\t\t\t\t\t<\/li>\n<li class=\"amazonlink\">\n\t\t\t\t\t\t<a href=\"https:\/\/www.amazon.co.jp\/dp\/B086VVQ3DJ?tag=naoya-ono-22&amp;linkCode=ogi&amp;th=1&amp;psc=1\" rel=\"nofollow\" class=\"yyi-rinker-link yyi-rinker-tracking\" data-click-tracking=\"amazon 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\" data-vars-amp-click-id=\"amazon 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\">Amazon<\/a>\t\t\t\t\t<\/li>\n<li class=\"rakutenlink\">\n\t\t\t\t\t\t<a href=\"https:\/\/hb.afl.rakuten.co.jp\/hgc\/16781883.64066d33.16781884.4f333982\/Rinker_o_20200831130951?pc=https%3A%2F%2Fsearch.rakuten.co.jp%2Fsearch%2Fmall%2Fswift%2B%25E5%25AE%259F%25E8%25B7%25B5%25E5%2585%25A5%25E9%2596%2580%2F%3Ff%3D1%26grp%3Dproduct&amp;m=https%3A%2F%2Fsearch.rakuten.co.jp%2Fsearch%2Fmall%2Fswift%2B%25E5%25AE%259F%25E8%25B7%25B5%25E5%2585%25A5%25E9%2596%2580%2F%3Ff%3D1%26grp%3Dproduct\" rel=\"nofollow\" class=\"yyi-rinker-link yyi-rinker-tracking\" data-click-tracking=\"rakuten 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\" data-vars-amp-click-id=\"rakuten 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\">\u697d\u5929\u5e02\u5834<\/a>\t\t\t\t\t<\/li>\n<li class=\"yahoolink\">\n\t\t\t\t\t\t<a href=\"https:\/\/shopping.yahoo.co.jp\/search?p=swift+%E5%AE%9F%E8%B7%B5%E5%85%A5%E9%96%80\" rel=\"nofollow\" class=\"yyi-rinker-link yyi-rinker-tracking\" data-click-tracking=\"yahoo 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\" data-vars-amp-click-id=\"yahoo 180 \uff3b\u5897\u88dc\u6539\u8a02\u7b2c3\u7248\uff3dSwift\u5b9f\u8df5\u5165\u9580 \u2500\u2500 \u76f4\u611f\u7684\u306a\u6587\u6cd5\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u8a00\u8a9e WEB+DB PRESS plus\">Yahoo\u30b7\u30e7\u30c3\u30d4\u30f3\u30b0<\/a>\t\t\t\t\t<\/li>\n<\/ul><\/div>\n<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u5b57\u5217\u306e\u7a7a\u5224\u5b9a\u3002 \u3069\u306e\u3088\u3046\u306b\u3084\u3063\u3066\u307e\u3059\u304b\uff1f \u307e\u3055\u304b\u6587\u5b57\u5217\u3068\u300c\u201d\u201d\u300d\u3092\u6bd4\u8f03\u3057\u3066\u306a\u3044\u3067\u3059\u3088\u306d\uff1f \u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u53ef\u8aad\u6027\u306e\u9ad8\u3044\u66f8\u304d\u65b9\u3068\u3001\u3042\u307e\u308a\u3088\u304f\u306a\u3044\u66f8\u304d\u65b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002 \u53ef\u8aad\u6027\u304c\u9ad8\u3044\u66f8\u304d\u65b9 \u4e00\u756a\u826f\u3044\u306e\u306fisEmpty\u30d7\u30ed\u30d1\u30c6\u30a3 &#8230; <\/p>\n","protected":false},"author":1,"featured_media":579,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/posts\/575"}],"collection":[{"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/comments?post=575"}],"version-history":[{"count":2,"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/posts\/575\/revisions"}],"predecessor-version":[{"id":580,"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/posts\/575\/revisions\/580"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/media\/579"}],"wp:attachment":[{"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/media?parent=575"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/categories?post=575"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/naoya-ono.com\/swift\/wp-json\/wp\/v2\/tags?post=575"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}