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Is there a way to pass optional parameters to a function?

...onal parameters" of the sort you want. For instance, here's a function opt_fun which takes two positional parameters x1 and x2, and looks for another keyword parameter named "optional". >>> def opt_fun(x1, x2, *positional_parameters, **keyword_parameters): ... if ('optional' in keywo...
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How do I add a linker or compile flag in a CMake file?

...ou want to add those flags (better to declare them in a constant): SET(GCC_COVERAGE_COMPILE_FLAGS "-fprofile-arcs -ftest-coverage") SET(GCC_COVERAGE_LINK_FLAGS "-lgcov") There are several ways to add them: The easiest one (not clean, but easy and convenient, and works only for compile flags,...
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Get content uri from file path in android

... the above solutions returns: 1. file:///storage/emulated/0/DCIM/Camera/VID_20140312_171146.mp4 2. /storage/emulated/0/DCIM/Camera/VID_20140312_171146.mp4 But what i was looking for is something different. I need the content:// format URI. The answer from Jinal seems to work perfect ...
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List of lists changes reflected across sublists unexpectedly

...at you create a new list at each position. One way to do it is [[1]*4 for _ in range(3)] which will reevaluate [1]*4 each time instead of evaluating it once and making 3 references to 1 list. You might wonder why * can't make independent objects the way the list comprehension does. That's beca...
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Google Maps: how to get country, state/province/region, city given a lat/long value?

...se Response: { "status": "OK", "results": [ { "types": [ "street_address" ], "formatted_address": "275-291 Bedford Ave, Brooklyn, NY 11211, USA", "address_components": [ { "long_name": "275-291", "short_name": "275-291", "types": [ "street_number" ] }, { ...
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Overriding superclass property with different type in Swift

... do it this way... class ViewController { var view: UIView! { return _view } private var _view: UIView! } class ScrollView : UIView {} class ScrollViewController : ViewController { override var view: ScrollView! { return super.view as ScrollView! } } class HomeView : ScrollView {}...
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SQL Server Escape an Underscore

...IKE keyword and the [ ] wildcard characters. For your case: ... LIKE '%[_]d' share | improve this answer | follow | ...
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Setting PayPal return URL and making it auto return?

...ine Documentation for IPN: https://developer.paypal.com/docs/classic/ipn/gs_IPN/ The general procedure is that you pass a notify_url parameter with the request, and set up a page which handles and validates IPN notifications, and PayPal will send requests to that page to notify you when payments/re...
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Leaflet - How to find existing markers, and delete markers?

... The layers are internally stored in map._layers. – flup Jan 26 '13 at 14:51 11 ...
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Generate JSON string from NSDictionary in iOS

...ke easier to read). @interface NSDictionary (BVJSONString) -(NSString*) bv_jsonStringWithPrettyPrint:(BOOL) prettyPrint; @end . @implementation NSDictionary (BVJSONString) -(NSString*) bv_jsonStringWithPrettyPrint:(BOOL) prettyPrint { NSError *error; NSData *jsonData = [NSJSONSerial...