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How to not run an example using roxygen2?
...answer instead of dontrun. From ?example 'donttest encloses code that typically should be run, but not during package checking.' whereas 'dontrun encloses code that should not be run.' I also got a comment by cran maintainers to switch from dontrun to donttest.
– Julian Karch
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Is there a way to word-wrap long words in a div?
... I'm using Firefox 24.6.0, and the word-wrap: break-word is what actually worked.
– user545424
Jun 26 '14 at 20:41
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How does Task become an int?
...t; (for a logical result of type T in an async manner)
The compiler does all the appropriate wrapping. The point is that you're asynchronously returning urlContents.Length - you can't make the method just return int, as the actual method will return when it hits the first await expression which ha...
What's faster, SELECT DISTINCT or GROUP BY in MySQL?
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They are essentially equivalent to each other (in fact this is how some databases implement DISTINCT under the hood).
If one of them is faster, it's going to be DISTINCT. This is because, although the two are the same, a query optimizer wo...
Changing the color of the axis, ticks and labels for a plot in matplotlib
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As a quick example (using a slightly cleaner method than the potentially duplicate question):
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(range(10))
ax.set_xlabel('X-axis')
ax.set_ylabel('Y-axis')
ax.spines['bottom'].set_color('red')
ax.spines['top...
Adding additional data to select options using jQuery
...ata attributes from HTML5 you can add extra data to elements in a syntactically-valid manner that is also easily accessible from jQuery.
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The current SynchronizationContext may not be used as a TaskScheduler
I am using Tasks to run long running server calls in my ViewModel and the results are marshalled back on Dispatcher using TaskScheduler.FromSyncronizationContext() . For example:
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Size of character ('a') in C/C++
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In C, the type of a character constant like 'a' is actually an int, with size of 4 (or some other implementation-dependent value). In C++, the type is char, with size of 1. This is one of many small differences between the two languages.
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What's the difference between IQueryable and IEnumerable
...;>), which can be thought of as "is the 'Age' property > 18".
This allows things like LINQ-to-SQL to exist because they can parse the expression tree and convert it into equivalent SQL. And because the provider doesn't need to execute until the IQueryable is enumerated (it implements IEnum...
Selectively revert or checkout changes to a file in Git?
Is there a command that allows you to partially undo the changes to a file (or files) in the working directory?
4 Answers
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