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Why JSF saves the state of UI components on server?
...;client</param-value>
</context-param>
It will then be serialized to an encrypted string in a hidden input field with the name javax.faces.ViewState of the form.
I dont understand what the benefit of keeping the UI component's state on the server side is. Isn't directly passing the va...
Does MySQL ignore null values on unique constraints?
...
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answered Sep 14 '10 at 19:34
Mark ByersMark Byers
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How does Bluebird's util.toFastProperties function make an object's properties “fast”?
...o" + o); // ensure no dead code elimination
}
Sans one or two small optimizations - all the below is still valid.
Let's first discuss what it does and why that's faster and then why it works.
What it does
The V8 engine uses two object representations:
Dictionary mode - in which object are stored a...
Mock vs MagicMock
...erett
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shared_ptr to an array : should it be used?
...deleter above may be replaced by
the std::default_delete partial specialization for array types
std::shared_ptr<int> sp(new int[10], std::default_delete<int[]>());
a lambda expression
std::shared_ptr<int> sp(new int[10], [](int *p) { delete[] p; });
Also, unless you actuall...
Git branch diverged after rebase
...eBrun
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ASP.NET MVC ambiguous action methods
...eviLevi
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JavaScript click event listener on class
... an array, but a HTMLCollection in most, or a NodeList in some browsers (Mozilla ref). Both of these types are Array-Like, (meaning that they have a length property and the objects can be accessed via their index), but are not strictly an Array or inherited from an Array. (meaning other methods that...
What does the exclamation mark mean in a Haskell declaration?
...y through a pattern match:
case f of
Foo 0 _ _ _ -> "first arg is zero"
_ -> "first arge is something else"
This is going to execute enough code to do what it needs, and no more. So it will create a Foo with four parameters (because you can't look inside it without it ex...
Test if a command outputs an empty string
...lly, you can inspect $?, which contains the exit code of the last command (zero for success, non-zero for failure). For example:
files=$(ls -A)
if [[ $? != 0 ]]; then
echo "Command failed."
elif [[ $files ]]; then
echo "Files found."
else
echo "No files found."
fi
More info here.
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