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How to smooth a curve in the right way?
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A quick and dirty way to smooth data I use, based on a moving average box (by convolution):
x = np.linspace(0,2*np.pi,100)
y = np.sin(x) + np.random.random(100) * 0.8
def smooth(y, box_pts):
box = np.ones(box_pts)/box_pts
y_smooth = np.convolve(y, box, mode='...
Difference between scaling horizontally and vertically for databases [closed]
I have come across many NoSQL databases and SQL databases. There are varying parameters to measure the strength and weaknesses of these databases and scalability is one of them. What is the difference between horizontally and vertically scaling these databases?
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Insert Update trigger how to determine if insert or update
...s, the common DELETED table will contain a record for these two actions. Based upon that information, I then created a small Action routine which determines why the trigger has been activated. This type of interface is sometimes needed when there is both a common configuration and a specific acti...
Cleanest way to write retry logic?
... a general exception handling mechanism. Having said that, here's a lambda-based retry wrapper that you can use with any method. I chose to factor the number of retries and the retry timeout out as parameters for a bit more flexibility:
public static class Retry
{
public static void Do(
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Most concise way to convert a Set to a List
... From the Javadoc from java.util.List: "Lists (like Java arrays) are zero based."
– Adamski
Feb 19 '16 at 14:55
@Adam...
.aspx vs .ashx MAIN difference
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Page is a special case handler.
Generic Web handler (*.ashx, extension based processor) is the default HTTP handler for all Web handlers that do not have a UI and that include the @WebHandler directive.
ASP.NET page handler (*.aspx) is the default HTTP handler for all ASP.NET pages.
Among the...
Java Replacing multiple different substring in a string at once (or in the most efficient way)
...mall or your search pattern changes frequently).
Below is a full example, based on a list of tokens taken from a map. (Uses StringUtils from Apache Commons Lang).
Map<String,String> tokens = new HashMap<String,String>();
tokens.put("cat", "Garfield");
tokens.put("beverage", "coffee");
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jQuery find parent form
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see also jquery/js -- How do I select the parent form based on which submit button is clicked?
$('form#myform1').submit(function(e){
e.preventDefault(); //Prevent the normal submission action
var form = this;
// ... Handle form submission
});
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ActiveRecord, has_many :through, and Polymorphic Associations
...w you do exactly what you're looking for.
class Widget < ActiveRecord::Base
has_many :widget_groupings
has_many :people, :through => :widget_groupings, :source => :grouper, :source_type => 'Person'
has_many :aliens, :through => :widget_groupings, :source => :grouper, :sourc...
How to output a comma delimited list in jinja python template?
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Just fyi, you might need to make this an if/else based on your settings. More info. can be found here: github.com/pallets/jinja/issues/710
– Paul Calabro
Sep 19 '17 at 23:24
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