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How to implement a property in an interface
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You're right, it should be public. I fixed it. I didn't care much about this, because it is not relevant to the things I tried to explain.
– Stefan Steinegger
Feb 10 '16 at 11:29
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How to prevent browser page caching in Rails
...b and after logout I am able to see the last page by back button. Please guide me where I am wrong?
– Thorin
Jan 21 '15 at 13:27
1
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Android ListView not refreshing after notifyDataSetChanged
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Look at your onResume method in ItemFragment:
@Override
public void onResume() {
super.onResume();
items.clear();
items = dbHelper.getItems(); // reload the items from database
adapter.notifyDataSetChanged();
}
what you just have updated before calling notify...
Why is early return slower than else?
...k the same question , but I was unaware of it. Apologies. The answers provided are different though!
1 Answer
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correct way to use super (argument passing)
So I was following Python's Super Considered Harmful , and went to test out his examples.
3 Answers
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Confusion: @NotNull vs. @Column(nullable = false) with JPA and Hibernate
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@NotNull is a JSR 303 Bean Validation annotation. It has nothing to do with database constraints itself. As Hibernate is the reference implementation of JSR 303, however, it intelligently picks up on these constraints and translates them into database con...
ERROR: Error installing capybara-webkit:
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On fedora is a bit more complicated. I did the next which takes a while:
$ sudo dnf install make gcc-c++ gdb qt5*-devel qt-creator
$ export QMAKE=/usr/bin/qmake-qt5
$ gem install capybara-webkit
Then it worked!
See more info on capybara-webkit wiki
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Loop through files in a directory using PowerShell
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If you need to loop inside a directory recursively for a particular kind of file, use the below command, which filters all the files of doc file type
$fileNames = Get-ChildItem -Path $scriptPath -Recurse -Include *.doc
If you need to do the filt...
Global access to Rake DSL methods is deprecated
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That did not work for me. I had to actually remove rake 0.9.1 > gem uninstall rake -v=0.9.1 and then > bundle update Thanks Antonio
– user779350
Jun 1 '11 at 12:20
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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 thi...