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WebSockets protocol vs HTTP
...b protocols:
TCP: low-level, bi-directional, full-duplex, and guaranteed order transport layer. No browser support (except via plugin/Flash).
HTTP 1.0: request-response transport protocol layered on TCP. The client makes one full request, the server gives one full response, and then the connection...
When and why JPA entities should implement Serializable interface?
...not expired in the mean time) when the application reload is completed.
In order to successfully restore the state of session attributes, all such attributes MUST implement the java.io.Serializable interface.
So, if the entity is stored in the HttpSession, it should implement Serializable.
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Difference between a “coroutine” and a “thread”?
... Parallelism is the simultaneous execution of multiple
pieces of work in order to increase speed. —https://github.com/servo/servo/wiki/Design
Short answer: With threads, the operating system switches running threads preemptively according to its scheduler, which is an algorithm in the operatin...
How can I remove a character from a string using Javascript?
...x + char.length);
char.length is zero. You need to add 1 in this case in order to skip character.
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How to enumerate an enum with String type?
...cle perhaps there is an issue that an enum is really a set and therefore unordered... mind you... order cases defined in wouldn't be a bad start!
– rougeExciter
Jun 17 '14 at 18:20
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How to calculate moving average using NumPy?
...nce of np.ones of a length equal to the sliding window length we want.
In order to do so we could define the following function:
def moving_average(x, w):
return np.convolve(x, np.ones(w), 'valid') / w
This function will be taking the convolution of the sequence x and a sequence of ones of l...
Rubymine: How to make Git ignore .idea files created by Rubymine
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That doesn't really work when the .idea folder is already under tracking
– ACV
Jan 28 '19 at 9:45
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Disable dragging an image from an HTML page
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@alex Under handler: The value false is also allowed as a shorthand for a function that simply does return false.
– Adam Merrifield
Jun 22 '16 at 14:35
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fatal error LNK1112: module machine type 'x64' conflicts with target machine type 'X86'
...red this maddening problem, and finally yanked my system back into working order.
These are the things to check, in this order:
Check your properties options in your linker settings at: Properties > Configuration Properties > Linker > Advanced > Target Machine. Select MachineX64 if yo...
Eclipse: Set maximum line length for auto formatting?
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Note: Eclipse (Kepler, at least) very obnoxiously allows you to edit the built-in profile to your heart's content, only to stop you from saving it with an unobtrusive notification that you CAN'T edit built-in profiles, and must create a copy and edit that instead.
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