{"id":1856,"date":"2023-12-07T05:00:00","date_gmt":"2023-12-07T13:00:00","guid":{"rendered":"https:\/\/www.angulartraining.com\/daily-newsletter\/?p=1856"},"modified":"2023-12-06T14:41:53","modified_gmt":"2023-12-06T22:41:53","slug":"local-variables-and-the-new-block-syntax","status":"publish","type":"post","link":"https:\/\/www.angulartraining.com\/daily-newsletter\/local-variables-and-the-new-block-syntax\/","title":{"rendered":"Local variables and the new block syntax"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Earlier this year, I mentioned <a href=\"https:\/\/www.angulartraining.com\/daily-newsletter\/async-pipe-syntax-tricks\/\" target=\"_blank\" rel=\"noopener\" title=\"\">how the async pipe can become much more useful<\/a> if we use a local variable instead of multiplying subscriptions to an Observable. In this example, we store the data we get from a subscription in the <code>user<\/code> variable:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"311\" src=\"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-content\/uploads\/2023\/12\/image-7-1024x311.png\" alt=\"\" class=\"wp-image-1858\" style=\"width:602px;height:auto\" srcset=\"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-content\/uploads\/2023\/12\/image-7-1024x311.png 1024w, https:\/\/www.angulartraining.com\/daily-newsletter\/wp-content\/uploads\/2023\/12\/image-7-300x91.png 300w, https:\/\/www.angulartraining.com\/daily-newsletter\/wp-content\/uploads\/2023\/12\/image-7-768x233.png 768w, https:\/\/www.angulartraining.com\/daily-newsletter\/wp-content\/uploads\/2023\/12\/image-7.png 1086w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">While that syntax still works as is, you might want to use the <a href=\"https:\/\/blog.angulartraining.com\/angular-17-new-control-flow-syntax-4fbec4772d04\" target=\"_blank\" rel=\"noopener\" title=\"\">new control flow syntax of Angular 17<\/a>. Fortunately for us, it is possible to use local variables as well using the following syntax:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"371\" src=\"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-content\/uploads\/2023\/12\/image-8-1024x371.png\" alt=\"\" class=\"wp-image-1859\" style=\"width:600px;height:auto\" srcset=\"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-content\/uploads\/2023\/12\/image-8-1024x371.png 1024w, https:\/\/www.angulartraining.com\/daily-newsletter\/wp-content\/uploads\/2023\/12\/image-8-300x109.png 300w, https:\/\/www.angulartraining.com\/daily-newsletter\/wp-content\/uploads\/2023\/12\/image-8-768x278.png 768w, https:\/\/www.angulartraining.com\/daily-newsletter\/wp-content\/uploads\/2023\/12\/image-8.png 1208w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The only difference is the <code>;<\/code> in the middle of the expression.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Earlier this year, I mentioned how the async pipe can become much more useful if we use a local variable instead of multiplying subscriptions to an Observable. In this example, we store the data we get from a subscription in the user variable: While that syntax still works as is, you might want to use [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,7],"tags":[],"class_list":["post-1856","post","type-post","status-publish","format-standard","hentry","category-angular","category-template-syntax"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts\/1856","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/comments?post=1856"}],"version-history":[{"count":2,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts\/1856\/revisions"}],"predecessor-version":[{"id":1861,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts\/1856\/revisions\/1861"}],"wp:attachment":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/media?parent=1856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/categories?post=1856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/tags?post=1856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}