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Convert a float64 to an int in Go
... a string. I know I can use fmt.Sprintf to convert anything to a string, and then strconv it to the data type I need, but this extra conversion seems a bit clumsy - is there a better way to do this?
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Detect Retina Display
...iably on all iOS devices, you need to check if the device is running 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 r...
How to play ringtone/alarm sound in Android
I have been looking everywhere how to play a ringtone/alarm sound in Android.
12 Answers
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Intellij shortcut to convert code to upper or lower case?
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Ctrl + Shift + U
In the future try typing: Ctrl + Shift + A and look for any actions you like. Here: Toggle Case.
Or ⌘ Command + Shift + U if you are using Mac OSX.
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XPath query to get nth instance of an element
...I just assumed simple left-to-right precedence).
– rlandster
Oct 24 '10 at 16:30
11
@rlandster: T...
Get the POST request body from HttpServletRequest
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In Java 8, you can do it in a simpler and clean way :
if ("POST".equalsIgnoreCase(request.getMethod()))
{
test = request.getReader().lines().collect(Collectors.joining(System.lineSeparator()));
}
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How to change legend title in ggplot
I have the following plot like below.
It was created with this command:
12 Answers
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Composite Key with EF 4.1 Code First
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You can mark both ActivityID and ActivityName properties with Key annotation or you can use fluent API as described by @taylonr.
Edit:
This should work - composite key defined with annotations requires explicit column order:
public class ActivityType
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How to make maven build platform independent?
...rties>
Absence of this means you are using platform specific encoding and that's why the warning.
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How to write asynchronous functions for Node.js
... non-blocking IO because non blocking IO is better. The best way to understand it is to go watch some videos by ryan dahl.
How do I write asynchronous functions for Node?
Just write normal functions, the only difference is that they are not executed immediately but passed around as callbacks.
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