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How to get the last N records in mongodb?
I can't find anywhere it has been documented this. By default, the find() operation will get the records from beginning. How can I get the last N records in mongodb?
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Read only file system on Android
...y rooted my Droid X and everything seems to be working perfectly. I made some changes to build.prop and when I do adb push build.prop /system/ I get the following error: failed to copy 'c:\build.prop' to '/system//build.prop': Read-only file system .
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Is there a faster/shorter way to initialize variables in a Rust struct?
...ion of the fields. Alternatively, it effectively takes one additional statement for each field to assign a value to the fields. All I want to be able to do is to assign default values when the struct is instantiated.
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How to fast-forward a branch to head?
I switched to master after developing on a branch for a long time. The log shows:
11 Answers
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Java Reflection Performance
...class via reflection is, by magnitude, more expensive.
Quoting Java's documentation on reflection:
Because reflection involves types that are dynamically resolved, certain Java virtual machine optimizations can not be performed. Consequently, reflective operations have slower performance than t...
How to import existing Git repository into another?
... simplest way would be to pull the XXX stuff into a branch in YYY and then merge it into master:
In YYY:
git remote add other /path/to/XXX
git fetch other
git checkout -b ZZZ other/master
mkdir ZZZ
git mv stuff ZZZ/stuff # repeat as necessary for each file/dir
git commit -m "M...
UITapGestureRecognizer tap on self.view but ignore subviews
I need to implement a feature that will invoke some code when I double tap on the self.view (view of UIViewCotroller ). But the problem that I have other UI object on this view and I don't want to attach any recognizer object to all of them. I found this method below how to make gesture on my view ...
Mocking static methods with Mockito
...er.class)
public class Mocker {
@Test
public void shouldVerifyParameters() throws Exception {
//given
PowerMockito.mockStatic(DriverManager.class);
BDDMockito.given(DriverManager.getConnection(...)).willReturn(...);
//when
sut.execute(); // System U...
External resource not being loaded by AngularJs
... and Phonegap, I'm trying to load a video that is on a remote server but came across an issue. In my JSON, the URL is entered as a plain HTTP URL.
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WPF and initial focus
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This works, too:
<Window FocusManager.FocusedElement="{Binding ElementName=SomeElement}">
<DataGrid x:Name="SomeElement">
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</DataGrid>
</Window>
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