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vs in Generics
... for example, works the opposite way. You can use a concrete IComparer<Foo> directly as an IComparer<Bar> if Bar is a subclass of Foo, because the IComparer<in T> interface is contravariant.
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Trim string in JavaScript?
...otype.trim = function() {
return this.replace(/^\s+|\s+$/g, "");
};
" foo bar ".trim(); // "foo bar"
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How to loop through an associative array and get the key? [duplicate]
... by roughly a factor of roughly 3.5 (At least on the box I used to test)
$foo = array(
1 => "Value1",
2 => "Value2",
10 => "Value10"
);
while($bar = each($foo)){
echo $bar[0] . " => " . $bar[1];
}
I would imagine that this is due to the fact the foreach copies the enti...
How do I put a variable inside a string?
... string operator with multiple arguments, one can use a tuple as operand: 'foo %d, bar %d' % (foo, bar).
– fiedl
Aug 8 '14 at 15:38
12
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How to use XPath contains() here?
...r>
<ul id="one">
<li>Model A</li>
<li>Foo</li>
</ul>
<ul id="two">
<li>Foo</li>
<li>Model A</li>
</ul>
</r>
XPaths
//ul[contains(li, 'Model')] selects the one ul element.
Note: The two ul e...
How to remove a field from params[:something]
...do a memo:
def parameters
@parameters ||= params.require(:root).permit(:foo, :bar)
end
Now you can do:
parameteres.delete(:bar)
parameters
=> <ActionController::Parameters {"foo" => "foo"} permitted: true>
...
How do I request a file but not save it with Wget? [closed]
...s assume std out when you leave off the descriptor from a redirect. So >foo is interpreted as 1>foo. When & follows a redirect, it instructs the shell to redirect the former file descriptor to the same output as the later. In this case, 2>&1 says redirect file descriptor 2 (std er...
NoSql Crash Course/Tutorial [closed]
...ready I assume. For instance. in javascript you can create an object named foo and then do foo['myobj'] = myobj; to store stuff in the object.
All NoSQL servers really do is give you a way to add/delete/query massive arrays and still allow for persistence and fault tolerance. You can create a NoSQL...
What is the best project structure for a Python application? [closed]
...-level directory can be the top-level architecture of your application.
/foo
/bar
/baz
I recommend putting all of this under the "name-of-my-product" directory. So, if you're writing an application named quux, the directory that contains all this stuff is named /quux.
Another project's PYTHON...
When is it right for a constructor to throw an exception?
...
@Patrick: Not sure what you mean - if you do 'new Foo' and Foo's constructor throws, the language WILL reclaim the memory. If you allocate memory in a constructor and provide no means for releasing it other than the destructor, then the language won't reclaim it if you throw...