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How do I replace NA values with zeros in an R dataframe?
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10 4 2 2 5 0 9 7 2 5 5
There's no need to apply apply. =)
EDIT
You should also take a look at norm package. It has a lot of nice features for missing data analysis. =)
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improv...
Why em instead of px?
I heard you should define sizes and distances in your stylesheet with em instead of in pixels. So the question is why should I use em instead of px when defining styles in css? Is there a good example that illustrates this?
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How to build & install GLFW 3 and use it in a Linux project
... a very long time, about 3 hours in total, partly because I am unfamiliar with CMake, and partly because I am was unfamiliar with GLFW.
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How do you configure logging in Hibernate 4 to use SLF4J
...e 3.x used slf4j for logging. Hibernate 4.x uses jboss-logging . I am writing a standalone application which uses Hibernate 4, and SLF4J for logging.
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Generating an MD5 checksum of a file
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You can use hashlib.md5()
Note that sometimes you won't be able to fit the whole file in memory. In that case, you'll have to read chunks of 4096 bytes sequentially and feed them to the md5 method:
import hashlib
def md5(fname):
hash_md5 = hashlib.md5()
with open(fname, "rb") as f:
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What use is find_package() if you need to specify CMAKE_MODULE_PATH anyway?
...ly need Config mode.
Module mode
Find<package>.cmake file located within your project. Something like this:
CMakeLists.txt
cmake/FindFoo.cmake
cmake/FindBoo.cmake
CMakeLists.txt content:
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake")
find_package(Foo REQUIRED) # FOO_INC...
Android: install .apk programmatically [duplicate]
I made this with help from
Android download binary file problems
and Install Application programmatically on Android .
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File name? Path name? Base name? Naming standard for pieces of a path
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A) C:\users\OddThinking\Documents\My Source\Widget\foo.src
Vim calls it file root (:help filename-modifiers)
B) C:\users\OddThinking\Documents\My Source\Widget\foo.src
file name or base name
C) C:\users\OddThinking\Documents\My Source\Widget\foo.src (without dot)
file/name extensio...
Differences between Perl and PHP [closed]
...to learn Perl 5 and as I have only used PHP until now, I wanted to know a bit about how the languages differ from each other.
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How do arrays in C# partially implement IList?
...nt IList<T> , among other interfaces. Somehow though, they do this without publicly implementing the Count property of IList<T> ! Arrays have only a Length property.
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