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Is it possible to have a multi-line comments in R? [duplicate]
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You can, if you want, use standalone strings for multi-line comments — I've always thought that prettier than if (FALSE) { } blocks. The string will get evaluated and then discarded, so as long as it's not the last line in a function nothing will happ...
What is “vectorization”?
... ... some other ... but I've never found an explanation what does it mean, and what it does? So I'm asking here, what is vectorization, and what does it mean for example, that "a loop is vectorized" ?
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How to use MySQLdb with Python and Django in OSX 10.6?
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I had the same error and pip install MySQL-python solved it for me.
Alternate installs:
If you don't have pip, easy_install MySQL-python should work.
If your python is managed by a packaging system, you might have to use
that system (e.g. sudo...
In absence of preprocessor macros, is there a way to define practical scheme specific flags at proje
Before swift I would define a set of schemes for alpha, beta, and distribution builds. Each of these schemes would have a set of macros that were defined to gate certain behaviors at the project level. The simplest example is the DEBUG=1 macro that is defined by default for all Xcode projects in t...
Why can't Python find shared objects that are in directories in sys.path?
...in LD_LIBRARY_PATH. Check if your LD_LIBRARY_PATH includes /usr/local/lib, and if it doesn't, add it and try again.
Some more information (source):
In Linux, the environment variable
LD_LIBRARY_PATH is a colon-separated
set of directories where libraries
should be searched for first, befo...
Copy the entire contents of a directory in C#
...cause unwanted consequences. Just a warning to people that like doing copy and paste over the net. The code posted by @jaysponsored is safer because it doesn't use string.Replace but I'm sure it also has its corner cases.
– Alex
Dec 3 '11 at 18:58
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Determining 32 vs 64 bit in C++
...he major compilers use for determining if it's a 64 bit environment or not and use that to set my variables.
// Check windows
#if _WIN32 || _WIN64
#if _WIN64
#define ENVIRONMENT64
#else
#define ENVIRONMENT32
#endif
#endif
// Check GCC
#if __GNUC__
#if __x86_64__ || __ppc64__
#define ENVIRONMENT6...
How should I read a file line-by-line in Python?
...files faster than the garbage collector calls finalizers on orphaned file handles. The usual workaround is to trigger the GC immediately, but this is a nasty hack and it has to be done by every function that could encounter the error, including those in libraries. What a nightmare.
Or you could j...
Is it possible to have nested templates in Go using the standard library?
.../django-templates does. Is it possible using just html/template in the standard library.
5 Answers
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How do I parse JSON with Objective-C?
...m new to iPhone. Can anyone tell me the steps to follow to parse this data and get the activity details, first name, and last name?
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