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Where does the “flatmap that s***” idiomatic expression in Scala come from?
...e fundamental monadic operator. That means it is a common operation shared by, for example, containers (such as Option, collections, etc), continuations, state, etc. Second, while you can de-construct an Option, that, as opposed to flatMap, is not a monadic operation, so it cannot be as widely appli...
How to turn off INFO logging in Spark?
...eter=INFO
Replace at the first line:
log4j.rootCategory=INFO, console
by:
log4j.rootCategory=WARN, console
Save and restart your shell. It works for me for Spark 1.1.0 and Spark 1.5.1 on OS X.
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java: Class.isInstance vs Class.isAssignableFrom
...zz.isAssignableFrom(Foo.class) will be true whenever the class represented by the clazz object is a superclass or superinterface of Foo.
clazz.isInstance(obj) will be true whenever the object obj is an instance of the class clazz.
That is:
clazz.isAssignableFrom(obj.getClass()) == clazz.isInstan...
Difference between adjustResize and adjustPan in android?
...indow are automatically panned
so that the current focus is never obscured by the keyboard and users
can always see what they are typing. This is generally less desirable
than resizing, because the user may need to close the soft keyboard to
get at and interact with obscured parts of the window.
ac...
How to remove selected commit log entries from a Git repository while keeping their changes?
...n the above command. It launches your $EDITOR.
Replace pick before C and D by squash. It will meld C and D into B. If you want to delete a commit then just delete its line.
If you are lost, type:
$ git rebase --abort
s...
How do you fade in/out a background color using jquery?
...
'slow' can be replaced by seconds... where 1000 equals to 1 second... and so on.
– Pathros
Mar 7 '16 at 17:18
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How can I create download link in HTML?
...ated. We now have the download attribute. (see also this link to MDN)
If by "the download link" you mean a link to a file to download, use
<a href="http://example.com/files/myfile.pdf" target="_blank">Download</a>
the target=_blank will make a new browser window appear before the ...
How to assert two list contain the same elements in Python? [duplicate]
...As of Python 3.2 unittest.TestCase.assertItemsEqual(doc) has been replaced by unittest.TestCase.assertCountEqual(doc) which does exactly what you are looking for, as you can read from the python standard library documentation. The method is somewhat misleadingly named but it does exactly what you ar...
Import multiple csv files into pandas and concatenate into one DataFrame
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@Mike @Sid the final two lines can be replaced by: pd.concat((pd.read_csv(f) for f in all_files), ignore_index=True). The inner brackets are required by Pandas version 0.18.1
– Igor Fobia
Oct 31 '16 at 15:27
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Why sizeof int is wrong, while sizeof(int) is right?
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From C99 Standard
6.5.3.4.2
The sizeof operator yields the size (in bytes) of its operand, which may be an expression or the parenthesized name of a
type.
In your case int is neither expression nor parenthesized name.
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