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Converting from Integer, to BigInteger
...eger.valueOf(myInteger.intValue());
Making a String first is unnecessary and undesired.
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Selecting data frame rows based on partial string match in a column
...a data.table (but also remember that subsetting approaches for data.frames and data.tables are not identical):
library(data.table)
mtcars[rownames(mtcars) %like% "Merc", ]
iris[iris$Species %like% "osa", ]
If that is what you had, then perhaps you had just mixed up row and column positions for su...
How to view file history in Git?
...pecifier that is a hash key (e.g. 14b8d0982044b0c49f7a855e396206ee65c0e787 and b410ad4619d296f9d37f0db3d0ff5b9066838b39). To view the difference between two different commits, use git diff with the first few characters of the revision specifiers of both commits, like so:
# diff between commits 14b8...
Protected methods in Objective-C
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Lee - if you declare a function pointer in @protected and assign a function in init method would it work?
– bikram990
Mar 11 '14 at 3:36
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How do you do a ‘Pause’ with PowerShell 2.0?
...m losing it. PowerShell is annoying me. I'd like a pause dialog to appear, and it won't.
5 Answers
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Purpose of Django setting ‘SECRET_KEY’
...ly is the point of the SECRET_KEY in django? I did a few google searches and checked out the docs ( https://docs.djangoproject.com/en/dev/ref/settings/#secret-key ), but I was looking for a more in-depth explanation of this, and why it is required.
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How does functools partial do what it does?
...lback):
''' callback should accept two positional arguments, event and params '''
self._listeners.append(callback)
# ...
def notify(self, event, *params):
for f in self._listeners:
f(event, params)
But a function you already have needs access to som...
Python strftime - date without leading 0?
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Actually I had the same problem and I realized that, if you add a hyphen between the % and the letter, you can remove the leading zero.
For example %Y/%-m/%-d.
This only works on Unix (Linux, OS X), not Windows (including Cygwin). On Windows, you would u...
What's the best way to retry an AJAX request on failure using jQuery?
... return;
}
if (xhr.status == 500) {
//handle error
} else {
//handle error
}
}
});
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How to auto-center jQuery UI dialog when resizing browser?
... same jQuery UI demo page adding only the code above, we're just adding a handler to the window's resize event with .resize(), so it triggers the re-center at the appropriate time.
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