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Convert pandas dataframe to NumPy array
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409
To convert a pandas dataframe (df) to a numpy ndarray, use this code:
df.values
array([[nan,...
Specifying column name in a “references” migration
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edited Dec 4 '12 at 1:35
Tom Harrison
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How can I pad a value with leading zeros?
...pt 3.1. Example:
var n=-0.1;
n.toLocaleString('en', {minimumIntegerDigits:4,minimumFractionDigits:2,useGrouping:false})
...will output "-0000.10".
// or
const padded = (.1+"").padStart(6,"0");
`-${padded}`
...will output "-0000.1".
A simple function is all you need
function zeroFil...
Count number of records returned by group by
... TotalRecords
from temptable
group by column_1, column_2, column_3, column_4
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Attempt by security transparent method 'WebMatrix.WebData.PreApplicationStartCode.Start()'
Update: same for mvc 4 to mvc 5.
15 Answers
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How to get object length [duplicate]
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David TangDavid Tang
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Determine Whether Integer Is Between Two Other Integers?
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Paolo MorettiPaolo Moretti
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What is “vectorization”?
...ead of processing a single element of an array N times, it processes (say) 4 elements of the array simultaneously N/4 times.
(I chose 4 because it's what modern hardware is most likely to directly support; the term "vectorization" is also used to describe a higher level software transformation wher...
Ways to save enums in database
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We never store enumerations as numerical ordinal values anymore; it makes debugging and support ...