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Re-ordering columns in pandas dataframe based on column name [duplicate]
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edited Dec 18 '18 at 22:57
gcamargo
2,22422 gold badges1717 silver badges3131 bronze badges
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How to change the output color of echo in Linux
... msanford made for tput, here is the "ANSI-Rainbow" for (( i = 30; i < 38; i++ )); do echo -e "\033[0;"$i"m Normal: (0;$i); \033[1;"$i"m Light: (1;$i)"; done
– everyman
Jan 28 '16 at 21:28
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Location Services not working in iOS 8
My app that worked fine on iOS 7 doesn't work with the iOS 8 SDK.
26 Answers
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Determine the data types of a data frame's columns
...r(my.data)
'data.frame': 5 obs. of 4 variables:
$ y : num 1.03 1.599 -0.818 0.872 -2.682
$ x1: int 1 2 3 4 5
$ x2: logi TRUE TRUE FALSE FALSE FALSE
$ X3: Factor w/ 5 levels "a","b","c","d",..: 1 2 3 4 5
@Gavin Simpson's approach is also streamlined, but provides slightly different information...
Does a valid XML file require an XML declaration?
... of Xerces.
Is the XML declaration <?xml version="1.0" encoding="UTF-8"?> required?
3 Answers
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Regex to validate date format dd/mm/yyyy
...to take dd/mm/yyyy, dd-mm-yyyy or dd.mm.yyyy.
^(?:(?:31(\/|-|\.)(?:0?[13578]|1[02]))\1|(?:(?:29|30)(\/|-|\.)(?:0?[13-9]|1[0-2])\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})$|^(?:29(\/|-|\.)0?2\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:0?[1-9]|1\d|2[0...
What does the C++ standard state the size of int, long type to be?
...s the number of bits in a byte. In all but the most obscure platforms it's 8, and it can't be less than 8.
One additional constraint for char is that its size is always 1 byte, or CHAR_BIT bits (hence the name). This is stated explicitly in the standard.
The C standard is a normative reference for t...
Is there a way to check if int is legal enum in C#?
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8 Answers
8
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Check substring exists in a string in C
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280
if(strstr(sent, word) != NULL) {
/* ... */
}
Note that strstr returns a pointer to the st...
How is it possible to declare nothing inside main() in C++ and yet have a working application after
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answered Jul 8 '13 at 15:17
NawazNawaz
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