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Postgis installation: type “geometry” does not exist
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Thanks. BTW, If someone using 'psql' to run this code, make sure the role have 'Superuser' attribute/privilege.
– Yang
Dec 12 '15 at 3:09
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How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
It's a sad fact of life on Scala that if you instantiate a List[Int], you can verify that your instance is a List, and you can verify that any individual element of it is an Int, but not that it is a List[Int], as can be easily verified:
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How are feature_importances in RandomForestClassifier determined?
I have a classification task with a time-series as the data input, where each attribute (n=23) represents a specific point in time. Besides the absolute classification result I would like to find out, which attributes/dates contribute to the result to what extent. Therefore I am just using the feat...
what is the best way to convert a json formatted key value pair to ruby hash with symbol as key?
...you want to preserve that mix upon decode (for instance, this could happen if your hash contains your own custom objects in addition to highly complex/nested third-party objects whose keys you cannot manipulate/convert for whatever reason, like a project time constraint).
E.g.:
h = {
:youtub...
Debug vs. Release performance
...piled at all
some loop variables are taken out of the loop by the compiler if they are proven to be invariants
code written under #debug directive is not included, etc.
The rest is up to the JIT.
Full list of optimizations here courtesy of Eric Lippert.
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How to Execute SQL Server Stored Procedure in SQL Developer?
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What are your parameters if they are varchar then only you need the quotes...other than that can't think of anything...you could try this just run only this in a new windows- EXEC proc_name and see if it asks you for the second parameter...then at l...
For files in directory, only echo filename (no path)
How do I go about echoing only the filename of a file if I iterate a directory with a for loop?
5 Answers
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Maintain/Save/Restore scroll position when returning to a ListView
...isible list item. But this item may be partially scrolled out of view, and if you want to restore the exact scroll position of the list you need to get this offset. So ListView.getChildAt(0) returns the View for the top list item, and then View.getTop() - mList.getPaddingTop() returns its relative o...
PostgreSQL - max number of parameters in “IN” clause?
In Postgres, you can specify an IN clause, like this:
8 Answers
8
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What's an appropriate HTTP status code to return by a REST API service for a validation failure?
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If "validation failure" means that there is some client error in the request, then use HTTP 400 (Bad Request). For instance if the URI is supposed to have an ISO-8601 date and you find that it's in the wrong format or refers...