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How do I calculate percentiles with python/numpy?

... You can use it as an aggregation function as well, e.g. to compute the tenth percentile of each group of a value column by key, use df.groupby('key')[['value']].agg(lambda g: np.percentile(g, 10)) – patricksurry Nov 26 '13 at 17:25 ...
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Cannot set content-type to 'application/json' in jQuery.ajax

...sShip.credits }), contentType: "application/json", complete: function (data) { console.log(data); wait = false; } }); Possibly related: jQuery $.ajax(), $.post sending "OPTIONS" as REQUEST_METHOD in Firefox Edit: After some more researc...
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ADO.NET DataRow - check for column existence

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What is the correct format to use for Date/Time in an XML file

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How do you represent a JSON array of strings?

...ted. Here are a few extra valid JSON examples, one per block: {} [0] {"__comment": "json doesn't accept comments and you should not be commenting even in this way", "avoid!": "also, never add more than one key per line, like this"} [{ "why":null} ] { "not true": [0, false], "true": true, ...
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Difference between InvariantCulture and Ordinal string comparison

When comparing two strings in c# for equality, what is the difference between InvariantCulture and Ordinal comparison? 9 An...
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How can I launch Safari from an iPhone app?

...following : NSURL *url = [NSURL URLWithString:@"http://www.stackoverflow.com"]; if (![[UIApplication sharedApplication] openURL:url]) { NSLog(@"%@%@",@"Failed to open url:",[url description]); } share | ...
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What is Prefix.pch file in Xcode?

... Precompiled header. What is it? A Prefix.pch is a precompiled header. Precompiled headers were invented to make compiling faster. Rather than parsing the same header files over and over, these files get parsed once, ahead of tim...
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How to launch an Activity from another Application in Android

...ion. Intent launchIntent = getPackageManager().getLaunchIntentForPackage("com.package.address"); if (launchIntent != null) { startActivity(launchIntent);//null pointer check in case package name was not found } share ...
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PHP session lost after redirect

...sure you redirect to the same domain. So redirecting from a www.yourdomain.com to yourdomain.com doesn't carry the session forward. Make sure your file extension is .php (it happens!) Now, these are the most common mistakes, but if they didn't do the trick, the problem is most likely to do with yo...