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Group a list of objects by an attribute : Java

... This will add the students object to the HashMap with locationID as key. HashMap<Integer, List<Student>> hashMap = new HashMap<Integer, List<Student>>(); Iterate over this code and add students to the HashMap: if (!hashMap.containsKey(locationId)) { List&...
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How to run two jQuery animations simultaneously?

... yes there is! $(function () { $("#first").animate({ width: '200px' }, { duration: 200, queue: false }); $("#second").animate({ width: '600px' }, { duration: 200, queue: false }); }); ...
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What jsf component can render a div tag?

... Addendum, or set the ID attribute. If I don't do this, it just shows up in the HTML without the surrounding DIV tags. – James McMahon Apr 1 '11 at 14:56 ...
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Calculate difference between two datetimes in MySQL

...imilar kind of functionality. For example there is one table say REQUESTS (id, message, timestamp). timestamp while storing will be NOW() . while i run a query, select * from requests, instead of displaying that value it should display id, message and how much time back request was posted. ...
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How to remove a column from an existing table?

... By the way, you can call these types of "re-runnable" scripts/functions Idempotent – tomosius Nov 25 '16 at 20:12 ...
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ASP.NET MVC partial views: input name prefixes

...lper, of type HtmlHelper<TModel> had a new property ViewData, which hid the base model's. With that, I replaced new ViewDataDictionary(helper.ViewData) with new ViewDataDictionary(((HtmlHelper)helper).ViewData). Do you see any problem with that? – Pat Newell ...
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What's the best way to share data between activities?

... Here a compilation of most common ways to achieve this: Send data inside intent Static fields HashMap of WeakReferences Persist objects (sqlite, share preferences, file, etc.) TL;DR: there are two ways of sharing data: passing data in the intent's extras or saving it somewhere else. If data ...
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Difference between array_map, array_walk and array_filter

... Changing Values: array_map cannot change the values inside input array(s) while array_walk can; in particular, array_map never changes its arguments. Array Keys Access: array_map cannot operate with the array keys, array_walk can. Return Value: array_map returns a new array...
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Populating a database in a Laravel migration file

... Don't put the DB::insert() inside of the Schema::create(), because the create method has to finish making the table before you can insert stuff. Try this instead: public function up() { // Create the table Schema::create('users', function($table)...
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How to merge YAML arrays?

...@MinaLuke, inferior in comparison to what? None of the current answers provide a way to merge two items using only yaml... Moreover, there is nothing in the question stating that the OP wishes to use this in CI/CD. Finally, when this is used in CI/CD, logging only depends on the particular CI/CD use...