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How to prevent the activity from loading twice on pressing the button

... will even handle Button Selected States for you (if you provide them) and all the Material Design “goodies” you’d expect from a simple standard Widget. I can’t believe people use timers for this. Then you start seeing strange libraries to handle things like these… – ...
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Why both no-cache and no-store should be used in HTTP response?

...ce is still valid then the cache can respond with its representation, thus alleviating the need for the server to resend the entire resource. no-store is effectively the full do not cache directive and is intended to prevent storage of the representation in any form of cache whatsoever. I say what...
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How to make input type= file Should accept only pdf and xls

... You could do so by using the attribute accept and adding allowed mime-types to it. But not all browsers do respect that attribute and it could easily be removed via some code inspector. So in either case you need to check the file type on the server side (your second question). Ex...
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Is there a way to make AngularJS load partials in the beginning and not at when needed?

...cs.angularjs.org/api/ng.directive:script) to put your partials in the initially loaded HTML You could also fill in $templateCache (http://docs.angularjs.org/api/ng.$templateCache) from JavaScript if needed (possibly based on result of $http call) If you would like to use method (2) to fill in $tem...
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Rails: call another controller action from a controller

I need to call the create action in controller A, from controller B. 9 Answers 9 ...
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AngularJS - Create a directive that uses ng-model

...se Angular so I'm not in a good position to make improvements. It's actually pretty good logic but you can simplify things a bit. Directive var app = angular.module('plunker', []); app.controller('MainCtrl', function($scope) { $scope.model = { name: 'World' }; $scope.name = "Felipe"; }); ...
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How to perform Single click checkbox selection in WPF DataGrid?

...and came across a surprisingly short solution for it (see this blog). Basically, all you need to do is replace the DataGridCheckBoxColumn definition in your XAML with the following: <DataGridTemplateColumn Header="MyCheckBoxColumnHeader"> <DataGridTemplateColumn.CellTemplate> ...
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How to add a vertical Separator?

...tretch" Width="1" Margin="2" Stroke="Black" /> <Button>Filter all</Button> </StackPanel> share | improve this answer | follow | ...
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How can I declare optional function parameters in Javascript? [duplicate]

...b || 0; // b will be set either to b or to 0. } This works as long as all values you explicitly pass in are truthy. Values that are not truthy as per MiniGod's comment: null, undefined, 0, false, '' It's pretty common to see JavaScript libraries to do a bunch of checks on optional inputs befor...
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Getting Spring Application Context

Is there a way to statically/globally request a copy of the ApplicationContext in a Spring application? 16 Answers ...