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Persistence unit as RESOURCE_LOCAL or JTA?
... downside is that the transaction is local to the JPA persistence unit, so if you want a transaction that spans multiple persistence units (or other databases), then RESOURCE_LOCAL may not be good enough.
JTA is also used for managing transactions across systems like JMS and JCA, but that's fairly ...
Will writeToFile:atomically: overwrite data?
...nstallation package that demands root privileges -- I don't know how to verify/printout the privileges with which my code is run.
– Motti Shneor
Apr 4 '16 at 7:59
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How to set UICollectionViewDelegateFlowLayout?
...ller maintains a reference to a UICollectionView. The controller should modify the built-in flow layout using the UICollectionViewDelegateFlowLayout.
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Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”?
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Since С99 the matching between format specifiers and floating-point argument types in C is consistent between printf and scanf. It is
%f for float
%lf for double
%Lf for long double
It just so happens that when arguments of type float are passed as variadic para...
Passing an enum value as command parameter from XAML
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If I have an enum called "MyEnum" in this namespace my.namespace, how to define "local"?
– Vering
May 15 at 13:04
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PHP foreach loop key value
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What, if you echo $key? Nah. Not if you run it on the array that Philadelphia is a key of. Can you show some code?
– Pekka
Dec 2 '09 at 18:17
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Should I use .done() and .fail() for new jQuery AJAX code instead of success and error
...tual removal, use jqXHR.done(), jqXHR.fail(), and jqXHR.always() instead.
If you are using the callback-manipulation function (using method-chaining for example), use .done(), .fail() and .always() instead of success(), error() and complete().
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How to convert NSNumber to NSString
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@JonLOo when using this for specific number the decimal values loose exact values. For Eg : NSNumber *num = [NSNumber numberWithDouble:48.3]; NSString *strNumber = num.stringValue; gives results as 48.299999; this becomes critical if its A...
Markdown `native` text alignment
... known this isn't markdown, but <p align="center"> worked for me, so if anyone figures out the markdown syntax instead I'll be happy to use that. Until then I'll use the HTML tag.
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Increase number of axis ticks
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You can override ggplots default scales by modifying scale_x_continuous and/or scale_y_continuous. For example:
library(ggplot2)
dat <- data.frame(x = rnorm(100), y = rnorm(100))
ggplot(dat, aes(x,y)) +
geom_point()
Gives you this:
And overriding the scales c...