{"id":427,"date":"2021-10-11T14:29:39","date_gmt":"2021-10-11T06:29:39","guid":{"rendered":"https:\/\/www.tonghin.com.my\/blog\/?p=427"},"modified":"2021-10-11T14:29:41","modified_gmt":"2021-10-11T06:29:41","slug":"collection-types","status":"publish","type":"post","link":"https:\/\/www.tonghin.com.my\/blog\/2021\/10\/11\/collection-types\/","title":{"rendered":"Collection types"},"content":{"rendered":"\n<p>The past week , I have been working on creating features in Tong Hin&#8217;s inventory module , and used many different types of collections interchangeably to retrieve data such as<strong> IEnumerable , ICollection , IList  and IQueryable <\/strong>.<\/p>\n\n\n\n<p><strong><span class=\"has-inline-color has-primary-color\">IEnumerable vs ICollection vs IList vs IQueryable<\/span><\/strong><\/p>\n\n\n\n<p><strong>IEnumerable <\/strong>is the most basic type of list container to store data . It has no order and does not allow us to modify the set . An IEnumerable supports the where clause to filter elements , but it does not hold the count of elements as we need to iterate over the elements with &#8220;foreach&#8221; to get the count .<\/p>\n\n\n\n<p><strong>ICollection <\/strong>is a modifiable set and allows us to edit the elements in the collection with .Add , .Update and .Remove . Such as IEnumerable , ICollection also has no order and does not allow us to sort the data without changing it to a list with ToList() .<\/p>\n\n\n\n<p><strong>IList <\/strong>is an ordered set and provides an object indexer to allow the user to access the collection with square brackets like myList[x] . It is useful when we want to sort elements in the collection . I used it to sort dates to show the latest data in a table . <\/p>\n\n\n\n<p><strong>IQueryable <\/strong>is used when we want to run an Ad-hoc query , an Ad-hoc query is created to provide a specific record set from the database , usually defined to serve for a particular purpose . I used it to include different entities from other classes in one query  .<\/p>\n\n\n\n<p>In summary , each function has its own characteristics and is adaptable to different scenarios , and it is better for us not to memorize but understand how things work .<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The past week , I have been working on creating features in Tong Hin&#8217;s inventory module , and used many different types of collections interchangeably to retrieve data such as IEnumerable , ICollection , IList and IQueryable . IEnumerable vs ICollection vs IList vs IQueryable IEnumerable is the most basic type of list container to &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.tonghin.com.my\/blog\/2021\/10\/11\/collection-types\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Collection types&#8221;<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Collection types | Tong Hin&#039;s Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tonghin.com.my\/blog\/2021\/10\/11\/collection-types\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Collection types | Tong Hin&#039;s Blog\" \/>\n<meta property=\"og:description\" content=\"The past week , I have been working on creating features in Tong Hin&#8217;s inventory module , and used many different types of collections interchangeably to retrieve data such as IEnumerable , ICollection , IList and IQueryable . 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