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Java rounding up to an int using Math.ceil
... that it doesn't work for a = 0 and b < 1.
int n = (a - 1) / b + 1;
##Explanation behind the "less intuitive approach"
Since dividing two integer in Java (and most other programming languages) will always floor the result. So:
int a, b;
int result = a/b (is the same as floor(a/b) )
But we don't...
Guards vs. if-then-else vs. cases in Haskell
...condition, or one single decision you need to make. Nested if..then..else-expressions are very uncommon in Haskell, and guards should almost always be used instead.
let absOfN =
if n < 0 -- Single binary expression
then -n
else n
Every if..then..else expression can be replaced by a guar...
Python Pandas: Get index of rows which column matches certain value
Given a DataFrame with a column "BoolCol", we want to find the indexes of the DataFrame in which the values for "BoolCol" == True
...
Save classifier to disk in scikit-learn
...t objects that can be pickled and dumped like any other. To continue your example:
import cPickle
# save the classifier
with open('my_dumped_classifier.pkl', 'wb') as fid:
cPickle.dump(gnb, fid)
# load it again
with open('my_dumped_classifier.pkl', 'rb') as fid:
gnb_loaded = cPickle.lo...
libpthread.so.0: error adding symbols: DSO missing from command line
...prototypes -Wmissing-field-initializers -Wno-override-init \
-g -O2 -export-dynamic -o utilities/ovs-dpctl utilities/ovs-dpctl.o \
lib/libopenvswitch.a \
/home/jyyoo/src/dpdk/build/lib/librte_eal.a /home/jyyoo/src/dpdk/build/lib/libethdev.a /home/jyyoo/src/dpdk/build/lib/librte_cmdlin...
Remove an entire column from a data.frame in R
...es anyone know how to remove an entire column from a data.frame in R? For example if I am given this data.frame:
6 Answers
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Get ffmpeg information in friendly way
... about my video files with ffmpeg, it pukes a lot of useless information mixed with good things.
4 Answers
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Meaning of = delete after function declaration
What does = delete mean in that context?
9 Answers
9
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How to fix: “UnicodeDecodeError: 'ascii' codec can't decode byte”
How to fix it?
19 Answers
19
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How do I iterate over an NSArray?
...dard idiom to iterate over an NSArray. My code needs to be suitable for OS X 10.4+.
8 Answers
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