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What are 'get' and 'set' in Swift?

... That's actually explained right before the code: In addition to simple properties that are stored, properties can have a getter and a setter. class EquilateralTriangle: NamedShape { ... When some other class wants to get that perimeter variable, they ...
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How to sum a variable by group

...ric2, x$Metric3) ... (embedding @thelatemail comment), aggregate has a formula interface too aggregate(Frequency ~ Category, x, sum) Or if you want to aggregate multiple columns, you could use the . notation (works for one column too) aggregate(. ~ Category, x, sum) or tapply: tapply(x$...
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How to create our own Listener interface in android?

...ack.onTaskComplete(result); } } Have a look at this , this question for more details. share | improve this answer | follow | ...
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Disable mouse scroll wheel zoom on embedded Google Maps

...ng the page. :( So I solved this putting a div with an .overlay exactly before each gmap iframe insertion, see: <html> <div class="overlay" onClick="style.pointerEvents='none'"></div> <iframe src="https://mapsengine.google.com/map/embed?mid=some_map_id" width="640" height=...
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Expand a div to fill the remaining width

...sy, but not at all obvious. You have to trigger something called a "block formatting context" (BFC), which interacts with floats in a specific way. Just take that second div, remove the float, and give it overflow:hidden instead. Any overflow value other than visible makes the block it's set on b...
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AngularJS access parent scope from child controller

... I've just checked $scope.$parent.someProperty works for me. and it will be {{$parent.someProperty}} for the view. share | improve this answer | fo...
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How to set the value to a cell in Google Sheets using Apps Script?

... Hi - Regarding to which a "Script is Active" I have an INDEX/Table formula that I want in cell D18 on Worsheet 'FianceIndex' When I do the formula in the Cell itself it doesn't auto-refresh - so I figured put it in a script and apply a trigger. Problem with getActiveSheet() is that every ot...
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Parse a URI String into Name-Value Collection

... If you are looking for a way to achieve it without using an external library, the following code will help you. public static Map<String, String> splitQuery(URL url) throws UnsupportedEncodingException { Map<String, String> quer...
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In a Django form, how do I make a field readonly (or disabled) so that it cannot be edited?

In a Django form, how do I make a field read-only (or disabled)? 26 Answers 26 ...
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How to set custom header in Volley Request

How can custom headers be set for a Volley request? At the moment, there is way to set body content for a POST request. I've a simple GET request, but I need to pass the custom headers alongwith. I don't see how JsonRequest class supports it. Is it possible at all? ...