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JSON to pandas DataFrame
...dictionary to dataframe
train = pd.DataFrame.from_dict(dict_train, orient='index')
train.reset_index(level=0, inplace=True)
Hope it helps :)
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MySQL how to join tables on two fields
... Basically, slowness is because concrete calculates new values that has no indexes so direct conditions should be faster. if even this query would be slow again, check is indexes exists, and sometimes creation one index for 2 fields also makes sense.
– Eugene Kaurov
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Javascript : natural sort of alphanumerical strings
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once instead of in every step through the sort.
function naturalSort(ar, index){
var L= ar.length, i, who, next,
isi= typeof index== 'number',
rx= /(\.\d+)|(\d+(\.\d+)?)|([^\d.]+)|(\.(\D+|$))/g;
function nSort(aa, bb){
var a= aa[0], b= bb[0], a1, b1, i= 0, n, L= a.length...
“Large data” work flows using pandas
...going to append to each table by group
# we are not going to create indexes at this time
# but we *ARE* going to create (some) data_columns
# figure out the field groupings
for g, v in group_map.items():
# create the frame for this group
frame =...
Docker build “Could not resolve 'archive.ubuntu.com'” apt-get fails to install anything
...'google.com'", then you have the same problem as me.
The nslookup command queries the DNS server 8.8.8.8 in order to turn the text address of 'google.com' into an IP address. Ironically, 8.8.8.8 is Google's public DNS server. If nslookup fails, public DNS servers like 8.8.8.8 might be blocked by yo...
How to make an introduction page with Doxygen
....dox, .txt and .doc. Files with these extensions do not appear in the file index but can be used to include additional information into your final documentation - very useful for documentation that is necessary but that is not really appropriate to include with your source code (for example, an FAQ)...
Do I need dependency injection in NodeJS, or how to deal with …?
....exports = {
honkHorn: function () {
horn.honk();
}
};
// index.js
var car = require("./car");
car.honkHorn();
Because JavaScript is untyped, we don't have the quite the same tight coupling that we had before. There is no need for interfaces (nor do they exist) as the car module w...
how to replicate pinterest.com's absolute div stacking layout [closed]
...in the shortest column at the moment it is added
"left:" === the column # (index array) times the column width + margin
"top:" === The value in the array (height) for the shortest column at that time
Finally, add the height of the pin to the column height (array value)
The result is lightweight. I...
Eclipse and Windows newlines
...lowing in a unix shell:
find ./ -wholename "\*CVS/[RE]\*" -exec dos2unix -q -o {} \;
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How to forward declare a template class in namespace std?
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Check out this answer (stackoverflow.com/questions/307343/…) and the linked newsgroup discussion.
– Jon Purdy
Oct 7 '10 at 6:49
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