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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
...ER() OVER (PARTITION BY section_id ORDER BY name) AS r,
t.*
FROM
xxx t) x
WHERE
x.r <= 2;
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BaseException.message deprecated in Python 2.6
I get a warning that BaseException.message is deprecated in Python 2.6 when I use the following user-defined exception:
8 A...
LINQ: When to use SingleOrDefault vs. FirstOrDefault() with filtering criteria
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AngularJS $http, CORS and http authentication
... }
});
And and on server side you have to put headers to this is example for nodejs:
/**
* On all requests add headers
*/
app.all('*', function(req, res,next) {
/**
* Response settings
* @type {Object}
*/
var responseSettings = {
"AccessControlAllowOrigin...
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17 Answers
17
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Can I extract the underlying decision-rules (or 'decision paths') from a trained tree in a decision tree as a textual list?
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C# Sortable collection which allows duplicate keys
...s objects will appear in report.
The sequence is the Y position (cell) on Excel spreadsheet.
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In Ruby, is there an Array method that combines 'select' and 'map'?
...y use map and compact together along with my selection criteria as a postfix if. compact gets rid of the nils.
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}
=> [3, 3, 3, nil, nil, nil]
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}.compact
=> [3, 3, 3]
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