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Why should you remove unnecessary C# using directives?
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And as you modify files, you will end up adding more and more namespaces to the beginning of the files. So if you don't remove unused namespaces, when you open the file, all you see is a giant list of namespaces instead of actual implementatio...
Where can I get a list of Ansible pre-defined variables?
...ovide some pre-defined variables that we can use in playbooks and template files. For example, the host ip address is ansible_eth0.ipv4.address. Googleing and searching the docs I cound't find a list of all available variables. Would someone list them for me?
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How can I quantify difference between two images?
... images, convert to grayscale, compare and print results:
def main():
file1, file2 = sys.argv[1:1+2]
# read images as 2D arrays (convert to grayscale for simplicity)
img1 = to_grayscale(imread(file1).astype(float))
img2 = to_grayscale(imread(file2).astype(float))
# compare
n...
How to draw a line in android
...this is a problem for your layout define the width of the line a ressource file and create a separate ressource file for small screens that sets the value to 1px instead of 1dp.
This approach is only usable if you want horizontal or vertical lines that are used to divide layout elements. If you wan...
How does TestFlight do it?
...y install it on any device. For an enterprise distribution provisioning profile you don't have to specify the devices and you can (at least technically) install the binary on any device. However, the license restricts you to only install it within the company that the distribution profile was issued...
Assign variables to child template in {% include %} tag Django
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Like @Besnik suggested, it's pretty simple:
{% include "subject_file_upload.html" with form=form foo=bar %}
The documentation for include mentions this. It also mentions that you can use only to render the template with the given variables only, without inheriting any other variables.
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Replacing blank values (white space) with NaN in pandas
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If you are exporting the data from the CSV file it can be as simple as this :
df = pd.read_csv(file_csv, na_values=' ')
This will create the data frame as well as replace blank values as Na
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How to check if a word is an English word with Python?
...se looking them up will be faster:
with open("english_words.txt") as word_file:
english_words = set(word.strip().lower() for word in word_file)
def is_english_word(word):
return word.lower() in english_words
print is_english_word("ham") # should be true if you have a good english_words.t...
What does “error: option --single-version-externally-managed not recognized” indicate?
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I was having this problem. It turned out it was a problem with the file permissions on my pip cache.
If you see a message at the very beginning of your pip output like
The directory '/home/ubuntu/.cache/pip/http' or its parent directory is not owned by the current user and the cache has be...
How do I ignore ampersands in a SQL script running from SQL Plus?
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You can also specify this in the glogin.sql site profile setup file or the login.sql user profile setup file
– David Aldridge
Sep 23 '08 at 14:37
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