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How would I get a cron job to run every 30 minutes?
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I've always used */30 with success but I don't recall an application of mine where it was too critical if it only ran once an hour so I don't think I've ever checked.
– Adam Hawes
Feb 25 '09 at 5:39
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What is the difference between IQueryable and IEnumerable?
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First of all, IQueryable<T> extends the IEnumerable<T> interface, so anything you can do with a "plain" IEnumerable<T>, you can also do with an IQueryable<T>.
IEnumerable<T> just has a GetEnumerator() m...
What's the difference between QMainWindow, QWidget and QDialog?
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A QWidget is the base class for all drawable classes in Qt. Any QWidget-based class can be shown as a window by showing it when it has no parent.
A QDialog is based on QWidget, but designed to be shown as a window. It will always appear in a window, and ...
How to put a UserControl into Visual Studio toolBox
...you've tagged the question as)
I had problems getting them to add automatically to the toolbox as in VS2008/2005.
There's actually an option to stop the toolbox auto populating!
Go to Tools > Options > Windows Forms Designer > General
At the bottom of the list you'll find Toolbox > Au...
What is “String args[]”? parameter in main method Java
...telligently by developers. Actual thinking is very deep.
Which is basically developed under consideration of C & C++ based on Command line argument but nowadays nobody uses it more.
Thing 1- User can enter any type of data from the command line can be Number or String & necessary to ac...
How To: Best way to draw table in console app (C#)
..., until you start working with non-unicode characters. Then the width gets all messed up.
– Thom
Jul 6 at 9:54
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leiningen - how to add dependencies for local jars?
...t the point of using a dependency management tool, though if you don't actually want those dependencies managed, you could treat Leiningen as an "open source dependencies management tool" and maybe be careful with lein clean.
As the situation becomes more complex -- there's a larger number of priva...
Why does Java's hashCode() in String use 31 as a multiplier?
... i == (i << 5) - i. Modern VMs do this sort of optimization automatically.
(from Chapter 3, Item 9: Always override hashcode when you override equals, page 48)
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java.nio.file.Path for a classpath resource
...t I'd get from Class.getResource(String) ) as a java.nio.file.Path ? Ideally, I'd like to use the fancy new Path APIs with classpath resources.
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Purpose of asterisk before a CSS property
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All browsers but IE ignore the rules. It's known as the star hack. I think IE7 will ignore the rules in standards mode.
In this case, the font rule is set and then overridden for IE 6 and sometimes 7.
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