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How do I provide JVM arguments to VisualVM?
...ofile a Java webapp running under Tomcat, but VisualVM often tells me that it doesn't have enough memory to take a snapshot, and to use the -Xmx switch to provide more memory to Netbeans. The problem is, I'm running VisualVM outside of Netbeans, so how can I provide JVM arguments to jvisualvm.exe?
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Is it possible to use argsort in descending order?
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avgDists.argsort()[::-1][:n]
Both methods are O(n log n) in time complexity, because the argsort call is the dominant term here. But the second approach has a nice advantage: it replaces an O(n) negation of the array with an O(1) slice. If you're working with small arrays inside loops then you ...
Preview an image before it is uploaded
I want to be able to preview a file (image) before it is uploaded. The preview action should be executed all in the browser without using Ajax to upload the image.
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Python import csv to list
I have a CSV file with about 2000 records.
13 Answers
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Difference between CTE and SubQuery?
...be used recursively; a sub-query cannot. This makes them especially well suited to tree structures.
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String was not recognized as a valid DateTime “ format dd/MM/yyyy”
I am trying to convert my string formatted value to date type with format dd/MM/yyyy .
13 Answers
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What is the purpose of a question mark after a type (for example: int? myVariable)?
Typically the main use of the question mark is for the conditional, x ? "yes" : "no" .
8 Answers
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JSONP with ASP.NET Web API
...reating a new set of services in ASP.MVC MVC 4 using the Web API. So far, it's great. I have created the service and gotten it to work, and now I am trying to consume it using JQuery. I can get back the JSON string using Fiddler, and it seems to be ok, but because the service exists on a separate...
Running a cron job on Linux every six hours
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You forgot a *, and you've too many fields. It's the hour you need to care about
0 */6 * * * /path/to/mycommand
This means every sixth hour starting from 0, i.e. at hour 0, 6, 12 and 18 which you could write as
0 0,6,12,18 * * * /path/to/mycommand
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Rich vs Anemic Domain Model [closed]
... by placing the data interpretation logic into the rich domain model. Thus it puts logic and data together and a rich domain model would look like this:
order.getTotal();
This has a big impact on object consistency. Since the data interpretation logic wraps the data (data can only be accessed thr...