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@Nullable annotation usage
... the method, you should also accept null values.
It also serves as a hint for code analyzers like FindBugs. For example, if such a method dereferences its argument without checking for null first, FindBugs will emit a warning.
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Hour from DateTime? in 24 hours format
...eTime? and what i want to do is to obtain the hour but show it in 24 hours format.
For example:
If the hour is 2:20:23 p.m. i want to convert it to 14:20 and that's it.
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What text editor is available in Heroku bash shell? [closed]
...id messing up git history is to work in a branch and clean up afterwards before merging into master. If your branch is named debug-heroku, deploy like this: git push heroku debug-heroku:master.
– Zubin
May 17 '15 at 23:23
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check if variable is dataframe
...heritance (see What are the differences between type() and isinstance()?). For example, it will tell you if a variable is a string (either str or unicode), because they derive from basestring)
if isinstance(obj, basestring):
i_am_string(obj)
Specifically for pandas DataFrame objects:
import ...
How to initialize std::vector from C-style array?
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Don't forget that you can treat pointers as iterators:
w_.assign(w, w + len);
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What is an uber jar?
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Über is the German word for above or over (it's actually cognate with the English over).
Hence, in this context, an uber-jar is an "over-jar", one level up from a simple JAR (a), defined as one that contains both your package and all its dependenci...
What does PorterDuff.Mode mean in android graphics.What does it do?
...r shaped pieces of cardboard" overlayed on each other, as well as a scheme for blending the overlapping parts.
The default Android way of composing images is PorterDuff.Mode.SRC_OVER, which equates to drawing the source image/color over the target image. In other words, it does what you would expec...
Reorder bars in geom_bar ggplot2
...ou want to order the bars from high to low, you will have to add a -sign before value:
ggplot(corr.m, aes(x = reorder(miRNA, -value), y = value, fill = variable)) +
geom_bar(stat = "identity")
which gives:
Used data:
corr.m <- structure(list(miRNA = structure(c(5L, 2L, 3L, 6L, 1L, 4L...
ngClass style with dash in key
...t;i class="icon-home" ng-class="{icon\-white: someBooleanValue}">
The former is probably preferred, since you can more easily search for it in your favorite editor.
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File Upload using AngularJS
Here is my HTML form:
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