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Why rename synthesized properties in iOS with leading underscores? [duplicate]
...e variables to differentiate them from their properties (even though Apple doesn't want you to use underscores, but that's a different matter). You synthesize the property to point at the instance variable. But the point is, _qux is an instance variable and self.qux (or [self qux]) is the message qu...
Are there constants in JavaScript?
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If you try to assign a value to a const, it doesn't throw any errors. The assignment just fails and the constant still has its original value. This is a major design flaw IMHO but as long as there is a clear, consistent naming convention (such as the popular ALL_CAPS) ...
MVC which submit button has been pressed
...wish I could say otherwise since I was hoping/trying to use this, but this does not work.
– Christopher King
Feb 9 '17 at 20:20
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How do I run a spring boot executable jar in a Production environment?
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This doesn't work! I have tried it and I get the following error:Failed to start MyApp.service: Unit MyApp.service not found
– Martijn Hiemstra
Apr 26 at 15:15
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javax.validation.ValidationException: HV000183: Unable to load 'javax.el.ExpressionFactory'
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Why doesn't hibernate-validator rely on that dependency?
– thomas.mc.work
May 11 '15 at 8:04
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Is there some way to PUSH data from web server to browser?
...ax Push is an insanely complex way to circumvent HTTP to do what WebSocket does by design. Stop being goofy and use the right tool for the job.
– Nick Steele
Aug 19 '16 at 16:55
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Is arr.__len__() the preferred way to get the length of an array in Python?
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You mention that by supplying len() each container does not have to implement a .length() method, but how is this different, if each type still implements a __len__() method which gets called by len() anyways? Is different container types handled differently by len()?
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What is the difference between the add and offer methods in a Queue in Java?
...an not be added to collection the add method throws an exception and offer doesn't.
From: http://java.sun.com/j2se/1.5.0/docs/api/java/util/Collection.html#add%28E%29
If a collection refuses to add a
particular element for any reason
other than that it already contains
the element, it mus...
How can two strings be concatenated?
... R, not just paste :P . It's actually inconsistent across R - data.frame() doesn't let you do it if vectors aren't a multiple of each other. matrix() spits out warnings, but array() doesn't. Kind of annoying. Really, they should all spit out warnings unless some option is set...
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How to use NSJSONSerialization
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The question does not ask anything about network requests
– Noah Gilmore
Nov 12 '18 at 20:54
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