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Build tree array from flat array in javascript
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edited Jul 11 at 8:24
adiga
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answered Aug 2...
Python matplotlib multiple bars
...ates import date2num
import datetime
x = [
datetime.datetime(2011, 1, 4, 0, 0),
datetime.datetime(2011, 1, 5, 0, 0),
datetime.datetime(2011, 1, 6, 0, 0)
]
x = date2num(x)
y = [4, 9, 2]
z = [1, 2, 3]
k = [11, 12, 13]
ax = plt.subplot(111)
ax.bar(x-0.2, y, width=0.2, color='b', align='c...
What is the purpose of Looper and how to use it?
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401
What is Looper?
Looper is a class which is used to execute the Messages(Runnables) in a queue...
How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
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answered Feb 27 '09 at 20:45
Mehrdad AfshariMehrdad Afshari
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Pandas - How to flatten a hierarchical index in columns
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496
I think the easiest way to do this would be to set the columns to the top level:
df.columns =...
Remove all multiple spaces in Javascript and replace with single space [duplicate]
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4 Answers
4
Active
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How to delete a specific line in a file?
...35
Boris
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answered Jan 17 '11 at 4:44
houbysofthoubysof...
Is there a null-coalescing (Elvis) operator or safe navigation operator in javascript?
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146
You can use the logical 'OR' operator in place of the Elvis operator:
For example displayname ...
How to check if a string starts with one of several prefixes?
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Do you mean this:
if (newStr4.startsWith("Mon") || newStr4.startsWith("Tues") || ...)
Or you could use regular expression:
if (newStr4.matches("(Mon|Tues|Wed|Thurs|Fri).*"))
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HTTP headers in Websockets client API
...e results in the following header with the string "username:password" base64 encoded:
Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=
I have tested basic auth in Chrome 55 and Firefox 50 and verified that the basic auth info is indeed negotiated with the server (this may not work in Safari).
Thank...