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Determining memory usage of objects? [duplicate]
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some time ago I stole this little nugget from here:
sort( sapply(ls(),function(x){object.size(get(x))}))
it has served me well
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Conditionally ignoring tests in JUnit 4
...auses the test to be ignored.
Edit: To compare with the @RunIf annotation from junit-ext, their sample code would look like this:
@Test
public void calculateTotalSalary() {
assumeThat(Database.connect(), is(notNull()));
//test code below.
}
Not to mention that it is much easier to captur...
C++11 features in Visual Studio 2012
...hat was not part of Visual Studio 2010:
rvalue references to version 2.1 from 2.0
lambdas to version 1.1 from 1.0.
decltype to version 1.1 from 1.0(not yet available in developer preview)
Improved, but still incomplete, Alignment
completed strongly-typed enums
forward declared enums
Standard layou...
Android Studio marks R in red with error message “cannot resolve symbol R”, but build succeeds
...fragment layout line: android:layout_bottom="@id/my_list" Simply switching from this line from one fragment to use layout_top on another fragment.
– Mingsheng
Jul 8 '15 at 14:47
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How to remove all listeners in an element? [duplicate]
...tree is a bad idea. It is much slower than removing all the EventListeners from the node with node.removeEventListener. In addition you will get a memory leak (node + subtree) and off course all EventListeners were removed from the subtree. If you use your function on document.body you will blow up ...
In where shall I use isset() and !empty()
...e isset() is not an effective way to validate text inputs and text boxes from a HTML form.
17 Answers
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Printf width specifier to maintain precision of floating-point value
...ot adequate for your example of distinguishing 1.000_0000_0000_0000_2e-01 from 1.000_0000_0000_0000_3e-01. %.17g is needed.
– Don Hatch
Jun 14 '16 at 1:03
1
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How to fix “ImportError: No module named …” error in Python?
...s; this is done to prevent directories with a common name, such as string, from unintentionally hiding valid modules that occur later on the module search path. In the simplest case, init.py can just be an empty file
– panofish
Jan 14 '16 at 21:13
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How does git merge after cherry-pick work?
...cherry-picked commits in history twice.
Solution to prevent this I quote from article which recommends for branches with duplicate(cherry-picked) commits use rebase before merge:
git merge after git cherry-pick: avoiding duplicate commits
Imagine we have the master branch and a branch b:...
How to get the current date and time
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From Date doc: As of JDK 1.1, the Calendar class should be used to convert between dates and time fields and the DateFormat class should be used to format and parse date strings.
– Paolo M
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