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Remove xticks in a matplotlib plot?
...ke this. This code turns off major and minor ticks and removes the labels from the x-axis.
from matplotlib import pyplot as plt
plt.plot(range(10))
plt.tick_params(
axis='x', # changes apply to the x-axis
which='both', # both major and minor ticks are affected
bottom=Fals...
Cannot import XSSF in Apache POI
...
For OOXML to work you need the POI-OOXML jar which is separately packaged from the POI jar.
Download the POI-OOXML jar from the following location -
http://repo1.maven.org/maven2/org/apache/poi/poi-ooxml/3.11/poi-ooxml-3.11.jar
For Maven2 add the below dependency -
<dependency>
<gr...
n-grams in python, four, five, six grams?
... a model base on ngrams where n > 3 will result in much data sparsity.
from nltk import ngrams
sentence = 'this is a foo bar sentences and i want to ngramize it'
n = 6
sixgrams = ngrams(sentence.split(), n)
for grams in sixgrams:
print grams
...
type object 'datetime.datetime' has no attribute 'datetime'
...
>>> import datetime
>>> datetime
<module 'datetime' from '/usr/lib/python2.6/lib-dynload/datetime.so'>
>>> datetime.datetime(2001,5,1)
datetime.datetime(2001, 5, 1, 0, 0)
But, if you import datetime.datetime:
>>> from datetime import datetime
>>&g...
Argparse optional positional arguments?
...
@ant From the above, you can see that dir is optional (that it appears in square brackets in argparse output indicates this).
– Vinay Sajip
Sep 15 '14 at 22:00
...
Should I always use a parallel stream when possible?
...ctions as streams, and just as easy to use a parallel stream. Two examples from the docs , the second one using parallelStream:
...
LogCat message: The Google Play services resources were not found. Check your project configuration
...-services_lib library project to my workspace and added a reference to it from my application project, following the instructions on these pages:
...
Getting hold of the outer class object from the inner class object
...he JLS as Qualified this.
I don't think there's a way to get the instance from outside the code of the inner class though. Of course, you can always introduce your own property:
public OuterClass getOuter() {
return OuterClass.this;
}
EDIT: By experimentation, it looks like the field holding...
Mutable vs immutable objects
...utable objects gets a lot of bad press (e.g. returning an array of strings from a method) but I'm having trouble understanding what the negative impacts are of this. What are the best practices around using mutable objects? Should you avoid them whenever possible?
...
What is the native keyword in Java for?
...ynamically loaded library (here written in C) with arbitrary assembly code from Java
and get results back into Java
This could be used to:
write faster code on a critical section with better CPU assembly instructions (not CPU portable)
make direct system calls (not OS portable)
with the tradeo...