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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 =...
LINQ Aggregate algorithm explained
... carries forward. etc.
Example 1. Summing numbers
var nums = new[]{1,2,3,4};
var sum = nums.Aggregate( (a,b) => a + b);
Console.WriteLine(sum); // output: 10 (1+2+3+4)
This adds 1 and 2 to make 3. Then adds 3 (result of previous) and 3 (next element in sequence) to make 6. Then adds 6 and 4 t...
What is an Android PendingIntent?
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A PendingIntent is a token that you give to a foreign application (e.g. NotificationManager, Ala...
Remove all multiple spaces in Javascript and replace with single space [duplicate]
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4 Answers
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How do you convert a byte array to a hexadecimal string, and vice versa?
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45 Answers
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How to delete a specific line in a file?
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Boris
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answered Jan 17 '11 at 4:44
houbysofthoubysof...
Environment variables for java installation
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14 Answers
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Frame Buster Buster … buster code needed
..." create a setInterval method that tries to break the frame. If after 3 or 4 tries your page still isn't the top page - create a div element that covers the whole page (modal box) with a message and a link like...
You are viewing this page in a unauthorized frame window - (Blah blah... potential se...
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 ...
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...