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How do synchronized static methods work in Java and can I use it for loading Hibernate entities?

...ic methods, you can class SomeClass { private static final Object LOCK_1 = new Object() {}; private static final Object LOCK_2 = new Object() {}; static void foo() { synchronized(LOCK_1) {...} } static void fee() { synchronized(LOCK_1) {...} } static void...
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Return None if Dictionary key is not available

...ldn't work out what I was doing wrong here. – wobbily_col Aug 23 '16 at 14:28 @TimPietzcker - can you please explain y...
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Why can't I make a vector of references?

... The component type of containers like vectors must be assignable. References are not assignable (you can only initialize them once when they are declared, and you cannot make them reference something else later). Other non-assign...
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What's the better (cleaner) way to ignore output in PowerShell? [closed]

...000 object pipeline. ## Control Pipeline Measure-Command {$(1..1000) | ?{$_ -is [int]}} TotalMilliseconds : 119.3823 ## Out-Null Measure-Command {$(1..1000) | ?{$_ -is [int]} | Out-Null} TotalMilliseconds : 190.2193 ## Redirect to $null Measure-Command {$(1..1000) | ?{$_ -is [int]} > $null} ...
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In Markdown, what is the best way to link to a fragment of a page, i.e. #some_id?

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
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How do I convert an NSString value to NSData?

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What is this Javascript “require”?

... what does mean this line "const io = require('socket.io')(http);" in the context of "require(')" what does "http" – juan carlos peña cabrera Jul 20 at 17:24 ...
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*.h or *.hpp for your class definitions

... directly or indirectly. It can included directly, being protected by the __cplusplus macro: Which mean that, from a C++ viewpoint, the C-compatible code will be defined as extern "C". From a C viewpoint, all the C code will be plainly visible, but the C++ code will be hidden (because it won't co...
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jquery: $(window).scrollTop() but no $(window).scrollBottom()

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Android file chooser [closed]

... This answer does not consider the uri like this:"content://com.android.providers.media.documents/document/image:62". – wangqi060934 Jul 31 '15 at 7:38 2 ...