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How to send a stacktrace to log4j?
...tion and get the following on the standard output (like, say, the console) if you do a e.printStackTrace() :
11 Answers
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How to iterate over the keys and values in an object in CoffeeScript?
...m the prototype, which is probably not an issue in this example but may be if you are building on top of other stuff.
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django admin - add custom form fields that are not part of the model
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If for some reason, you get an AttributeError: Unable to lookup "extra_field"..., try adding a label to the extra_field definition. It seems that django tries to "guess" the label for it, by looking at the Model and the Model...
How to get temporary folder for current user
...iables in the following order and uses the first path found:
The path specified by the TMP environment variable.
The path specified by the TEMP environment variable.
The path specified by the USERPROFILE environment variable.
The Windows directory.
It's not entirely clear to me whether "The Windo...
How do you track record relations in NoSQL?
...Use the same criteria you would use to denormalize a relational database: if it's more important for data to have cohesion (think of values in a comma-separated list instead of a normalized table), then do it that way.
But this inevitably optimizes for one type of query (e.g. comments by any user ...
Internet Explorer 11 detection
I know IE 11 has different user agent string than all other IE
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Get original URL referer with PHP?
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Store it either in a cookie (if it's acceptable for your situation), or in a session variable.
session_start();
if ( !isset( $_SESSION["origURL"] ) )
$_SESSION["origURL"] = $_SERVER["HTTP_REFERER"];
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PostgreSQL return result set as JSON array?
...then converts the array to a JSON array.
I wasn't able to discern any significant performance difference between the two.
Object of lists
This section describes how to generate a JSON object, with each key being a column in the table and each value being an array of the values of the column. It's...
How can I catch all the exceptions that will be thrown through reading and writing a file?
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If you want, you can add throws clauses to your methods. Then you don't have to catch checked methods right away. That way, you can catch the exceptions later (perhaps at the same time as other exceptions).
The code looks ...
How to convert a java.util.List to a Scala list
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@mauhiz If a Scala Buffer is a Java List, then nothing is fine! The OP wanted a conversion from Java List to an immutable Scala List. Expressions that expect a Scala List won't typecheck with a Buffer.
– Andres ...