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How do I provide custom cast support for my class?

...t from that example, using the explicit method, if you do: string name = "Test"; Role role = (Role) name; Then everything is fine; however, if you use: object name = "Test"; Role role = (Role) name; You will now get an InvalidCastException because string cannot be cast to Role, why, the compil...
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AngularJS - $anchorScroll smooth/duration

...e. I did some small changes on his solution in terms of modularization and testability. Here's is yet another working example on JsFiddle that includes the other version with testing included. For testing, I'm using Karma and Jasmine. Signature has been slightly modified as follows: anchorSmooth...
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What is the difference between NaN and None?

...nswer the second question: You should be using pd.isnull and pd.notnull to test for missing data (NaN). share | improve this answer | follow | ...
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Python : List of dict, if exists increment a dict value, if not append a new dict

...urls) If you really need to do it the way you showed, the easiest and fastest way would be to use any one of these three examples, and then build the one you need. from collections import defaultdict # available in Python 2.5 and newer urls_d = defaultdict(int) for url in list_of_urls: urls...
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Regex match everything after question mark?

... /([a-zA-Z]{4}):/ will match Test: Welcome and grab Test – Austin Lin Dec 11 '10 at 22:30 ...
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What is ?= in Makefile

... not set/doesn't have a value. For example: KDIR ?= "foo" KDIR ?= "bar" test: echo $(KDIR) Would print "foo" GNU manual: http://www.gnu.org/software/make/manual/html_node/Setting.html share | ...
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Which is best way to define constants in android, either static class, interface or xml resource?

...r that I'm having three different set of URLs to point development system, test server and live server. It's difficult to change URL whenever I want to give application for testing/live. so I planned to make it as configurable, so that application can get appropriate URL based on me build type confi...
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What is the difference between Pan and Swipe in iOS?

...ding state of the gesture. Code that handles tap gestures should therefore test for the state of the gesture. Swift 3 UITapGestureRecognizer Demo Example Resource Link override func viewDidLoad() { super.viewDidLoad() let tap = UITapGestureRecognizer(target: self, action: #selector(doubleTa...
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MySQL: ignore errors when importing?

... I've tested both -D dbName and --database=dbName and it worked @Aamnah – tcadidot0 Sep 5 '19 at 3:49 add ...
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How are ssl certificates verified?

...ins the domain name and/or ip address of the web server. Your web browser confirms with the certificate authority that the address listed in the certificate is the one to which it has an open connection. Your web browser generates a shared symmetric key which will be used to encrypt the HTTP traffi...