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Why is it not possible to extend annotations in Java?

...n types of arbitrary external programs. Stub generators, for example, fall into this category. These programs will read annotated classes without loading them into the virtual machine, but will load annotation interfaces. So, yes I guess, the reason is it just KISS. Anyway, it seems th...
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Set title background color

...stomTitleBar" android:theme="@style/customTheme" ... From the Activity (called CustomTitleBar) : @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.main); ...
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Android: how to check if a View inside of ScrollView is visible?

...it is always returning false. Please let me know – KK_07k11A0585 Jun 15 '15 at 14:57 2 ...
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What is the largest Safe UDP Packet Size on the Internet

...rmation that you may not have anticipated. A 512-byte UDP payload is generally considered to do that, although even that does not leave quite enough space for a maximum size IP header. share | impr...
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Add legend to ggplot2 line plot

...range your data frame library(reshape2) dd = melt(dd_sub, id=c("fecha")) All that's left is a simple ggplot command: ggplot(dd) + geom_line(aes(x=fecha, y=value, colour=variable)) + scale_colour_manual(values=c("red","green","blue")) Example plot ...
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What are the benefits of functional programming? [closed]

...bel refers to a version of this array where this function has been done on all the elements." Functional programming moves more basic programming ideas into the compiler, ideas such as list comprehensions and caching. The biggest benefit of Functional programming is brevity, because code can be mo...
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What does Java option -Xmx stand for? [duplicate]

...it says, -Xmxn Specify the maximum size, in bytes, of the memory allocation pool. This value must a multiple of 1024 greater than 2MB. Append the letter k or K to indicate kilobytes, or m or M to indicate megabytes. The default value is 64MB. The upper limit for this value will be approxim...
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How do I invert BooleanToVisibilityConverter?

...sources> <Converters:InvertableBooleanToVisibilityConverter x:Key="_Converter"/> </UserControl.Resources> <Button Visibility="{Binding IsRunning, Converter={StaticResource _Converter}, ConverterParameter=Inverted}">Start</Button> ...
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How to solve “Fatal error: Class 'MySQLi' not found”?

...amazon linux, it would be something like sudo yum install php56-mysqlnd.x86_64 (pick the one matching to which version of php you have installed) – auspicious99 Dec 3 '18 at 10:46 ...
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Is VB really case insensitive?

...m not trying to start an argument here, but for whatever reason, it's typically stated that Visual Basic is case insensitive and C languages aren't (and somehow that is a good thing). ...