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What is the difference between exit() and abort()?
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abort() exits your program without calling functions registered using atexit() first, and without calling objects' destructors first. exit() does both before exiting your program. It does not call destructors for automatic objects though. So
A a;
void test() ...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...bar', so loop runs once and
done # prints nothing (actually "")
var="foo bar"
for i in "${var}bar"; do # Expands to 'for i in "foo barbar"; do...'
echo $i # so runs the loop once
done
# foo barbar
Note that "${var}bar" in the second example above could also ...
How to capitalize the first letter of a String in Java?
...ader br = new BufferedReader(new InputStreamReader(System.in));
// Actually use the Reader
String name = br.readLine();
// Don't mistake String object with a Character object
String s1 = name.substring(0, 1).toUpperCase();
String nameCapitalized = s1 + name.substring(1);
Syst...
How to start two threads at “exactly” the same time
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// Now if we block on the gate from the main thread, it will open
// and all threads will start to do stuff!
gate.await();
System.out.println("all threads started");
This doesn't have to be a CyclicBarrier, you could also use a CountDownLatch or even a lock.
This still can't make sure that ...
Is JavaScript a pass-by-reference or pass-by-value language?
...oduces the output:
10
changed
unchanged
If obj1 was not a reference at all, then changing obj1.item would have no effect on the obj1 outside of the function.
If the argument was a proper reference, then everything would have changed. num would be 100, and obj2.item would read "changed".
Instea...
How to remove close button on the jQuery UI dialog?
...r-close", ui.dialog || ui).hide();
}
});
To hide the close button on all dialogs you can use the following CSS too:
.ui-dialog-titlebar-close {
visibility: hidden;
}
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Redirect non-www to www in .htaccess
...answered Aug 21 '12 at 8:09
Randall HuntRandall Hunt
9,88155 gold badges2828 silver badges3939 bronze badges
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C# nullable string error
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For nullable, use ? with all of the C# primitives, except for string.
The following page gives a list of the C# primitives:
http://msdn.microsoft.com/en-us/library/aa711900(v=vs.71).aspx
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SQL: IF clause within WHERE clause
...n a WHERE clause. If you want to apply some "IF" logic in the WHERE clause all you need to do is add the extra condition with an boolean AND to the section where it needs to be applied.
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Thou shalt not inherit from std::vector
Ok, this is really difficult to confess, but I do have a strong temptation at the moment to inherit from std::vector .
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