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How to create a fixed-size array of objects

...ngle value, it cannot be nil. (Also note that [SKSpriteNode?] is different from [SKSpriteNode]?... you want an array of optionals, not an optional array.) Swift is very explicit by design about requiring that variables be initialized, because assumptions about the content of uninitialized reference...
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What is JavaScript's highest integer value that a number can go to without losing precision?

... the ability to represent integers exactly and to correctly compare them. From the spec: Note that all the positive and negative integers whose magnitude is no greater than 253 are representable in the Number type (indeed, the integer 0 has two representations, +0 and -0). To safely use i...
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Can't find @Nullable inside javax.annotation.*

... . I found some tutorials on the net, I noticed that this annotation comes from the package javax.annotation.Nullable ; but when I import it a compilation error is generated: cannot find symbol ...
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Can Java 8 code be compiled to run on Java 7 JVM?

...tion is being done using invokeDynamic (which already exist in JDK 7). So, from the JVM instruction set standpoint, nothing should make the codebase incompatible. There are, though, a lot of API associated and compiler improvements that would could make the code from JDK 8 difficult to compile/run u...
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Why should I prefer single 'await Task.WhenAll' over multiple awaits?

...erving the same SynchronizationContext, to further push its benefits aside from the semantics. I found no conclusive documentation, but looking at the IL there are evidently different implementations of IAsyncStateMachine in play. I don't read IL all that well, but WhenAll at the very least appears ...
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Reducing the space between sections of the UITableView

...e the serving of the UITableViewDelegate does only make an effect starting from floats greater than zero. -(CGFloat)tableView:(UITableView*)tableView heightForHeaderInSection:(NSInteger)section { return 1.0; } -(CGFloat)tableView:(UITableView*)tableView heightForFooterInSection:(NSInteger)sec...
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Python code to remove HTML tags from a string [duplicate]

...he default one (i.e. available without additional install) 'html.parser' from bs4 import BeautifulSoup cleantext = BeautifulSoup(raw_html, "lxml").text But it doesn't prevent you from using external libraries, so I recommend the first solution. ...
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ASP.NET Identity - HttpContext has no extension method for GetOwinContext

I have downloaded, and successfully ran the ASP.NET Identity sample from here: https://github.com/rustd/AspnetIdentitySample ...
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Samples of Scala and Java code where Scala code looks simpler/has fewer lines?

... to not have accessors prefixed with get. Idiomatic Java code is different from idiomatic Scala code. Sometimes the is prefix used for booleans. davetron5000.github.com/scala-style/naming_conventions/methods/… – Esko Luontola Jun 1 '10 at 20:40 ...
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What's the point of g++ -Wreorder?

... The order was man page-> SO answer. Here is an archive of the man page from 2007 that lists this example explicitly. The upvoted comment from Ben S is a hilarious example of someone suggesting that something exist without even checking that it does already. web.archive.org/web/20070712184121/htt...