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Prepend a level to a pandas MultiIndex

... cs95 231k6060 gold badges392392 silver badges456456 bronze badges answered Feb 7 '17 at 16:11 okartalokartal ...
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List all indexes on ElasticSearch server?

...oncise list of all indices in your cluster, call curl http://localhost:9200/_aliases this will give you a list of indices and their aliases. If you want it pretty-printed, add pretty=true: curl http://localhost:9200/_aliases?pretty=true The result will look something like this, if your indic...
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Convert a float64 to an int in Go

...to an int truncates the float, which if your system internally represent 2.0 as 1.9999999999, you will not get what you expect. The various printf conversions deal with this and properly round the number when converting. So to get a more accurate value, the conversion is even more complicated than...
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Returning a boolean from a Bash function

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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?

... As Sven mentioned, x[[[0],[2]],[1,3]] will give back the 0 and 2 rows that match with the 1 and 3 columns while x[[0,2],[1,3]] will return the values x[0,1] and x[2,3] in an array. There is a helpful function for doing the first example I gave, n...
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Regex to check whether a string contains only numbers [duplicate]

... Mike SamuelMike Samuel 106k2626 gold badges195195 silver badges228228 bronze badges ...
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How to add leading zeros?

...f digits to begin with, so let's try a harder example of making powers of 10 width 8 too. anim <- 25499:25504 x <- 10 ^ (0:5) paste (and it's variant paste0) are often the first string manipulation functions that you come across. They aren't really designed for manipulating numbers, but ...
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What does `void 0` mean? [duplicate]

... 1024 What does void 0 mean? void[MDN] is a prefix keyword that takes one argument and always retur...
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stop all instances of node.js server

...ess ID, then send a kill signal to it. So in your case, where the port is 8080, you could run the following: C:\>netstat -ano | find "LISTENING" | find "8080" The fifth column of the output is the process ID: TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 14828 TCP ...
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Check for internet connection availability in Swift

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