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How to map atan2() to degrees 0-360
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Just add 360° if the answer from atan2 is less than 0°.
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How to find whether or not a variable is empty in Bash
...s closer to what was asked. Jay has put this in his answer so I'll refrain from updating mine and leave this up as is.
– ChristopheD
Jun 17 '10 at 19:10
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Getting the array length of a 2D array in Java
...is is so and how we can figure this out when we're given an array problem. From the below code we can see that rows = 4 and columns = 3:
int[][] arr = { {1, 1, 1, 1},
{2, 2, 2, 2},
{3, 3, 3, 3} };
arr has multiple arrays in it, and these arrays can ...
Insert into a MySQL table or update if exists
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+1 From what I've found, this method is less problematic for auto-increment keys and other unique key collisions than REPLACE INTO, and it is more efficient.
– Andrew Ensley
May 11 '12 at 2...
String comparison: InvariantCultureIgnoreCase vs OrdinalIgnoreCase? [duplicate]
...se
property actually returns an instance
of an anonymous class derived from the
StringComparer class.
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CFBundleVersion in the Info.plist Upload Error
... it), rather than the iTunes version (which - I think - cannot be accessed from inside your app)
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How can query string parameters be forwarded through a proxy_pass with nginx?
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From the proxy_pass documentation:
A special case is using variables in the proxy_pass statement: The requested URL is not used and you are fully responsible to construct the target URL yourself.
Since you're using $1 i...
MongoDB Aggregation: How to get total records count?
I have used aggregation for fetching records from mongodb.
13 Answers
13
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Kill detached screen session [closed]
I learned from somewhere a detached screen can be killed by
11 Answers
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Replacing Pandas or Numpy Nan with a None to use with MysqlDB
...areful when replacing multiples and converting the type of the column back from object to float. If you want to be certain that your None's won't flip back to np.NaN's apply @andy-hayden's suggestion with using pd.where.
Illustration of how replace can still go 'wrong':
In [1]: import pandas as pd
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