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Architecture of a single-page JavaScript web application?
...b application be structured on the client-side? Specifically I'm curious about how to cleanly structure the application in terms of its model objects, UI components, any controllers, and objects handling server persistence.
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R memory management / cannot allocate vector of size n Mb
...re from 20,000 to 6,000,000 rows to feed to randomForest. Currently, I max out at about 150,000 rows because I need a contiguous block to hold the resulting randomForest object... Which is also why bigmemory does not help, as randomForest requires a matrix object.
– Benjamin
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Simple (non-secure) hash function for JavaScript? [duplicate]
...omething similar to the 32 character hexadecimal string that's the typical output of MD5, SHA1, etc. It doesn't have to be cryptographically secure, just reasonably resistant to collisions. (My initial use case is URLs, but I'll probably want to use it on other strings in the future.)
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How to keep index when using pandas merge
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In [5]: a.reset_index().merge(b, how="left").set_index('index')
Out[5]:
col1 to_merge_on col2
index
a 1 1 1
b 2 3 2
c 3 4 NaN
Note that for some left merge operations, you may end up with more rows than in a when...
C# equivalent to Java's charAt()?
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I think it should be pointed out that str.Substring(8,1) works as a solution, but it is much slower. Just found that out the hard way.
– qzcx
Feb 28 '15 at 2:10
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how to get first three characters of an NSString?
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note: "Range or index out of bounds" error possible if you don't check the length to make sure it has 3 or more characters long
– Ryan Bavetta
Mar 29 '12 at 4:01
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Expand div to max width when float:left is set
...tioned this, because he thinks they are both! needed to get the desired layout and therefore my alternative solution.
– merkuro
Jun 19 '09 at 13:38
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How can I read a function's signature including default argument values?
...s = []
# Use the args and defaults array returned by argspec and find out
# which arguments has default
for arg in argspec.args:
default_arg = _get_default_arg(argspec.args, argspec.defaults, arg_index)
if default_arg.has_default:
args.append("%s=%s" % (arg, ...
How can I add a box-shadow on one side of an element?
...de. The way I do it is to wrap the inner element with box-shadow into an outer one with padding-right and overflow:hidden; so the three other sides of the shadow are not visible.
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bash: mkvirtualenv: command not found
...export WORKON_HOME="/opt/virtual_env/"
My install seems to work fine without sourcing virtualenvwrapper_bashrc
Solution 2:
Alternatively as mentioned below, you could leverage the chance that virtualenvwrapper.sh is already in your shell's PATH and just issue a source `which virtualenvwrapper.sh...