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Truncating floats in Python
...point format into the sequence of bits (assuming a 64-bit float)
0011111111010011001100110011001100110011001100110011001100110011
This is the closest value to 0.3 that can accurately be represented as an IEEE float. But if you write 0.29999999999999998 in a Python program, the compiler translates...
Can someone explain the dollar sign in Javascript?
... sign is for.
Here's an alternative explanation: http://www.vcarrer.com/2010/10/about-dollar-sign-in-javascript.html
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Convert datetime to Unix timestamp and convert it back in python
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108
What you missed here is timezones.
Presumably you've five hours off UTC, so 2013-09-01T11:00:...
JavaScript, get date of the next day [duplicate]
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answered Apr 15 '14 at 10:39
acarlonacarlon
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Standardize data columns in R
... function on the data to do what you want.
dat <- data.frame(x = rnorm(10, 30, .2), y = runif(10, 3, 5))
scaled.dat <- scale(dat)
# check that we get mean of 0 and sd of 1
colMeans(scaled.dat) # faster version of apply(scaled.dat, 2, mean)
apply(scaled.dat, 2, sd)
Using built in functions...
Simple argparse example wanted: 1 argument, 3 results
... competition. :-)
– matt wilkie
Nov 10 '14 at 7:49
@badnack: It's whatever you want it to be, whatever 'a' represents....
Java Date vs Calendar
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answered Sep 10 '09 at 9:11
cletuscletus
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Learning Python from Ruby; Differences and Similarities
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In addition to the above, using the ! version of the compact function avoids a copy of the array: values.map{|v| v*v if v > 15}.compact!...
What is a “callback” in C and how are they implemented?
...RandomValue(void)
{
return rand();
}
int main(void)
{
int myarray[10];
populate_array(myarray, 10, getNextRandomValue);
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}
Here, the populate_array function takes a function pointer as its third parameter, and calls it to get the values to populate the array with. We've written...
How to set the current working directory? [duplicate]
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edited Feb 13 '13 at 10:43
Alex L
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