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Why C# implements methods as non-virtual by default?
Unlike Java, why does C# treat methods as non-virtual functions by default? Is it more likely to be a performance issue rather than other possible outcomes?
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Select elements by attribute in CSS
...selectors; and
you don't have to worry about CSS validation either, as CSS doesn't care about non-namespaced attribute names as long as they don't break the selector syntax.
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jQuery checkbox change and click event
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Tested in JSFiddle and does what you're asking for.This approach has the added benefit of firing when a label associated with a checkbox is clicked.
Updated Answer:
$(document).ready(function() {
//set initial state.
$('#textbox1').val(t...
MySQL Conditional Insert
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If your DBMS does not impose limitations on which table you select from when you execute an insert, try:
INSERT INTO x_table(instance, user, item)
SELECT 919191, 123, 456
FROM dual
WHERE NOT EXISTS (SELECT * FROM x_t...
Devise Secret Key was not set
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I don't see a that file in my app. Does this mean rails g devise:install didn't work successfully? Or is this answer already outdated?
– ahnbizcad
Jul 28 '14 at 23:28
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XML attribute vs XML element
...self-contained, i.e., a color, an ID, a name.
An Element is something that does or could have attributes of its own or contain other elements.
So yours is close. I would have done something like:
EDIT: Updated the original example based on feedback below.
<ITEM serialNumber="something">
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Version of Apache installed on a Debian machine
...R-Util 1.2.7
Compiled using: APR 1.2.7, APR-Util 1.2.7
... etc ...
If it does not work for you, run the command with sudo.
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Java Garbage Collection Log messages
...ut requesting more memory from the operating system. Note that this number does not include one of the survivor spaces, since only one can be used at any given time, and also does not include the permanent generation, which holds metadata used by the virtual machine.
The last item on the line ...
Pure JavaScript Graphviz equivalent [closed]
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Livizjs is a great tool, but note that it does not support the full language, such as 'clusters'
– SirLenz0rlot
Feb 4 '13 at 13:44
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support FragmentPagerAdapter holds reference to old fragments
...lar time - this should be considered an implementation detail. A ViewPager does lazy loading of its pages; by default it only loads the current page, and the one to the left and right.
If you put your app into the background, the fragments that have been added to the fragment manager are saved auto...