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Why prefer two's complement over sign-and-magnitude for signed numbers?
I'm just curious if there's a reason why in order to represent -1 in binary, two's complement is used: flipping the bits and adding 1?
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How to determine the number of days in a month in SQL Server?
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You can use the following with the first day of the specified month:
datediff(day, @date, dat...
How can I verify if one list is a subset of another?
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15 Answers
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Remove duplicated rows using dplyr
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139
Note: dplyr now contains the distinct function for this purpose.
Original answer below:
li...
How to find gaps in sequential numbering in mysql?
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Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2
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append to url and refresh page
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166
this should work (not tested!)
var url = window.location.href;
if (url.indexOf('?') > ...
Sorting list based on values from another list?
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Why is January month 0 in Java Calendar?
In java.util.Calendar , January is defined as month 0, not month 1. Is there any specific reason to that ?
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