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Would it be beneficial to begin using instancetype instead of id?

...ype that, as far as I can see, replaces id as a return type in -alloc and init . 4 Answers ...
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Can table columns with a Foreign Key be NULL?

... you can clearly indicate that this row is not to be used as a normal row, and can use the row as a way of providing a sort of dynamic default value for other rows. – Ouroborus Feb 21 '17 at 17:57 ...
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Best way to select random rows PostgreSQL

I want a random selection of rows in PostgreSQL, I tried this: 12 Answers 12 ...
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Difference between id and name attributes in HTML

What is the difference between the id and name attributes? They both seem to serve the same purpose of providing an identifier. ...
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How to set the id attribute of a HTML element dynamically with angularjs (1.x)?

...alue of its id attribute, which is the concatenation of a scope variable and a string ? 7 Answers ...
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How to use ScrollView in Android?

... Just make the top-level layout a ScrollView: <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:fillViewport="true"> <TableLayout android:layout_width="matc...
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Facebook access token server-side validation for iPhone app

...developing iPhone application, that is based on communication with server, and I want to use Facebook authentication mechanisms. ...
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SQL - Update multiple records in one query

...e syntax UPDATE config t1 JOIN config t2 ON t1.config_name = 'name1' AND t2.config_name = 'name2' SET t1.config_value = 'value', t2.config_value = 'value2'; Here is SQLFiddle demo or conditional update UPDATE config SET config_value = CASE config_name WH...
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Web API Routing - api/{controller}/{action}/{id} “dysfunctions” api/{controller}/{id}

...it. Once it gets the first matched rule, it will stop checking other rules and take this to search for controller and action. So, you should: Put your specific rules ahead of your general rules(like default), which means use RouteTable.Routes.MapHttpRoute to map "WithActionApi" first, then "Def...
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Find all records which have a count of an association greater than zero

... Well that is Rails for you. If you can provide an sql answer (and explain why this isn't efficient), that may be a lot more helpful. – jvnill May 7 '19 at 23:17 ...