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wkhtmltopdf: cannot connect to X server
...cuments on-the-fly on my linux web server. The program originally needed X11 or similar X server to run correctly, but through many requests by developers to have this run on servers without GUI, I am pretty sure it runs a virtual X server in the static version . I have been using the static (sta...
Can someone give an example of cosine similarity, in a very simple, graphical way?
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How can I apply a function to every row/column of a matrix in MATLAB?
...an apply a function to every item in a vector by saying, for example, v + 1 , or you can use the function arrayfun . How can I do it for every row/column of a matrix without using a for loop?
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How can I detect if the user is on localhost in PHP?
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178
You can also use $_SERVER['REMOTE_ADDR'] for which IP address of the client requesting is give...
urllib2.HTTPError: HTTP Error 403: Forbidden
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By adding a few more headers I was able to get the data:
import urllib2,cookielib
site= "htt...
Razor View throwing “The name 'model' does not exist in the current context”
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edited Sep 9 '18 at 22:11
ataravati
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How assignment works with Python list slice?
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116
You are confusing two distinct operation that use very similar syntax:
1) slicing:
b = a[0:2...
Add zero-padding to a string
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301
You can use PadLeft
var newString = Your_String.PadLeft(4, '0');
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Cost of len() function
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It's O(1) (constant time, not depending of actual length of the element - very fast) on every type you've mentioned, plus set and others such as array.array.
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How to check if a value exists in a dictionary (python)
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>>> d = {'1': 'one', '3': 'three', '2': 'two', '5': 'five', '4': 'four'}
>>> 'one' in d.values()
True
Out of curiosity, some comparative timing:
>>> T(lambda : 'one' in d.itervalues()).repeat()
[0.28107285499572754...