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What is the purpose of willSet and didSet in Swift?

.... Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks. https://itun.es/ca/jEUH0.l I suspect it's to allow for things we would traditionally do with KVO such as data binding with UI elements, or triggering side effects of changing a property, triggering a sync process, background...
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Static Vs. Dynamic Binding in Java

...phism and not method-hiding. i found the below link to support my answer: https://youtu.be/tNgZpn7AeP0
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Creating a BLOB from a Base64 string in JavaScript

... See this example: https://jsfiddle.net/pqhdce2L/ function b64toBlob(b64Data, contentType, sliceSize) { contentType = contentType || ''; sliceSize = sliceSize || 512; var byteCharacters = atob(b64Data); var byteArrays = []; ...
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What is the point of interfaces in PHP?

...h version of the method does D inherit: that of B, or that of C? Source: https://en.wikipedia.org/wiki/Multiple_inheritance#The_diamond_problem Why/When to use an interface? An example... All cars in the world have the same interface (methods)... AccelerationPedalIsOnTheRight(), BrakePedalISOnThe...
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Are Javascript arrays sparse?

... a discussion about how to test for index sparseness in an array instance: https://benmccormick.org/2018/06/19/code-golf-sparse-arrays/ This code golf (fewest characters) winner is: let isSparse = a => !!a.reduce(x=>x-1,a.length) Basically walking the array for indexed entries while decrem...
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return, return None, and no return at all?

...x) def bar(x): if x < 0: return return math.sqrt(x) https://www.python.org/dev/peps/pep-0008/#programming-recommendations Basically, if you ever return non-None value in a function, it means the return value has meaning and is meant to be caught by callers. So when you retu...
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What unique features does Firebug have that are not built-in to Firefox?

... Seems like someone over there saw my question here ;) https://hacks.mozilla.org/2013/10/firefox-developer-tools-and-firebug/ Problem is, that also doesn't answer very much. But it implies, that Firebug right now doesn't have much to differentiate itself and so is looking for wa...
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Grid of responsive squares

...ome content </div> </div> </div> Fiddle: https://jsfiddle.net/patrickberkeley/noLm1r45/3/ This is tested in FF and Chrome. share | improve this answer | ...
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Why is SCTP not much used/known

...create a TCP-like reliable layer on top of UDP -- SCTP over DTLS over UDP: https://tools.ietf.org/html/draft-ietf-rtcweb-data-channel-13#section-6 share | improve this answer | ...
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How does a Breadth-First Search work when looking for Shortest Path?

...V, number of vertices. #5 Wikipedia BFS will work, and is sufficient. https://en.wikipedia.org/wiki/Breadth-first_search#Pseudocode I have lost 3 days trying all above alternatives, verifying & re-verifying again and again above they are not the issue. (Try to spend time looking for other...