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Difference between len() and .__len__()?
...y calling an object's __len__ method. __something__ attributes are special and usually more than meets the eye, and generally should not be called directly.
It was decided at some point long ago getting the length of something should be a function and not a method code, reasoning that len(a)'s mean...
How to get .pem file from .key and .crt files?
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Awesome! This is worked well for me! Just converted my .key and .crt files to .pem using your lines of code and then I uploaded (copy/paste) via AWS console. Thanks!
– Diego D
Jun 30 '16 at 10:52
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Importing files from different folder
... @kreativitea - sys.path returns a list, not a deque, and it'd be silly to convert the list to a deque and back.
– ArtOfWarfare
Nov 3 '13 at 20:35
40
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Array slices in C#
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Note that only single dimensional and jagged arrays are enumerable, multi dimensional arrays are not.
– Abel
Apr 8 '10 at 9:11
13
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List directory tree structure in python?
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Similar to answers above, but for python3, arguably readable and arguably extensible:
from pathlib import Path
class DisplayablePath(object):
display_filename_prefix_middle = '├──'
display_filename_prefix_last = '└──'
display_parent_prefix_middle = ' '
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Google Maps v2 - set both my location and zoom in
...s, does anyone know how to set google maps up, to open up both my location and in a zoomed-in view?
11 Answers
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Count the number occurrences of a character in a string
...ences of substring sub in the range [start, end]. Optional arguments start and end are interpreted as in slice notation.
>>> sentence = 'Mary had a little lamb'
>>> sentence.count('a')
4
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Transposing a NumPy array
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You can convert an existing vector into a matrix by wrapping it in an extra set of square brackets...
from numpy import *
v=array([5,4]) ## create a numpy vector
array([v]).T ## transpose a vector into a matrix
numpy also has a ma...
Intersection and union of ArrayLists in Java
... Ooof, it might be a nice one-liner but it takes O(n^2) time. Convert one of the lists to a Set then use the set's contains method. Not everything in life has to be done with streams.
– dimo414
Oct 26 '16 at 6:22
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How to post JSON to a server using C#?
...usResult);
// Create the post data
string postData = JsonConvert.SerializeObject(edit).ToString();
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
postStream.Write(byteArray, 0, byteArray.Length);
postStream.Close();
//Start the web request
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