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What's the difference between lapply and do.call?
...So for a n element list, lapply has n function calls, and do.call has just one function call. So do.call is quite different from lapply. Hope this clarifies your issue.
A code example:
do.call(sum, list(c(1, 2, 4, 1, 2), na.rm = TRUE))
and:
lapply(c(1, 2, 4, 1, 2), function(x) x + 1)
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How can I get LINQ to return the object which has the max value for a given property? [duplicate]
... .FirstOrDefault() is probably a better choice, since it's a little less prone to issues.
– Dortimer
May 1 '19 at 16:55
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Recursively add the entire folder to a repository
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Note that this will not include files mentioned in .gitignore. I usually add those by hand or use a batch file like this: for /R %%f in (*.*) do git add --force %%f (see bitbucket.org/jeroenp/besharp.net/src/tip/Scripts/GIT/…)
– Jeroen Wiert Pl...
How do I run a single test with Nose in Pylons
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Ahhh, the one combination I didn't try. sigh. Thanks!
– Ben
Sep 14 '10 at 17:10
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UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 20: ordinal not in rang
...script accepts bytes from the outside world, but all processing should be done in unicode. Only when you are ready to output your data should it be mushed back into bytes!
– Andbdrew
Mar 30 '12 at 12:29
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What is the global interpreter lock (GIL) in CPython?
...r weight" than creating multiple threads, but if you really need get work done in parallel, in python, it is an option.
– AJNeufeld
Jun 30 '16 at 19:25
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Jinja2 template variable if None Object set a default value
How to make a variable in jijna2 default to "" if object is None instead of doing something like this?
9 Answers
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How is Racket different from Scheme?
...ng. Also, Racket does have the more restricted letrec -- for example, the one in the r5rs language; it's an intentional choice to use the letrec*-like version in the default language.
– Eli Barzilay
Jul 31 '10 at 15:57
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How do I clear only a few specific objects from the workspace?
...gument:
rm(list = ls(pattern = "^tmp"))
Edit: Answering Rafael comment, one way to retain only a subset of objects is to name the data you want to retain with a specific pattern. For example if you wanted to remove all objects whose name do not start with paper you would issue the following comma...
How do I determine the target architecture of static library (.a) on Mac OS X?
I'm interested in verifying if a given iPhone static library has been built for ARM or Intel.
5 Answers
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