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Detect Retina Display
...unning iOS4+ and if the [UIScreen mainScreen].scale property is equal to 2.0. You CANNOT assume a device is running iOS4+ if the scale property exists, as the iPad 3.2 also contains this property.
On an iPad running iOS3.2, scale will return 1.0 in 1x mode, and 2.0 in 2x mode -- even though we kno...
Why is the minimalist, example Haskell quicksort not a “true” quicksort?
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Matthias Braun
22k1616 gold badges104104 silver badges138138 bronze badges
answered Oct 10 '11 at 20:26
patpat
12...
“SetPropertiesRule” warning message when starting Tomcat from Eclipse [duplicate]
When I start Tomcat (6.0.18) from Eclipse (3.4), I receive this message (first in the log):
12 Answers
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Style disabled button with CSS
...?
Example for the disabled selector:
button {
border: 1px solid #0066cc;
background-color: #0099cc;
color: #ffffff;
padding: 5px 10px;
}
button:hover {
border: 1px solid #0099cc;
background-color: #00aacc;
color: #ffffff;
padding: 5px 10px;
}
button:disabled,
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Select n random rows from SQL Server table
I've got a SQL Server table with about 50,000 rows in it. I want to select about 5,000 of those rows at random. I've thought of a complicated way, creating a temp table with a "random number" column, copying my table into that, looping through the temp table and updating each row with RAND() , and ...
How to change the background color of a UIButton while it's highlighted?
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30 Answers
30
Active
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How do you install Google frameworks (Play, Accounts, etc.) on a Genymotion virtual device? [duplica
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10 Answers
10
Active
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Sorting an array of objects in Ruby by object attribute?
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230
I recommend using sort_by instead:
objects.sort_by {|obj| obj.attribute}
Especially if attrib...
Java EE 6 @javax.annotation.ManagedBean vs. @javax.inject.Named vs. @javax.faces.ManagedBean
...because they could not predict the future requirements and they made EJB 1.0 and then 2.0 and then 3.0 and now 3.1 but EJB's target was for just some requirements (transaction, distributed component model, etc).
At the same time (in parallel) they realized that they need to support JSF too, then th...
What is the difference between const_iterator and non-const iterator in the C++ STL?
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answered Nov 21 '08 at 17:39
Dominic RodgerDominic Rodger
87.2k2828 gold badges185185 silver badges205205 bronze badges
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