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Why can't static methods be abstract in Java?
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Because "abstract" means: "Implements no functionality", and "static" means: "There is functionality even if you don't have an object instance". And that's a logical contradiction.
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Python multiprocessing pool.map for multiple arguments
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It seems to me that RAW_DATASET in this case should be a global variable? While I want the partial_harvester change the value of case in every call of harvester(). How to achieve that?
– xgdgsc
Sep 2 '13 at...
Do you need to dispose of objects and set them to null?
...ormat suitable for program use. You can end up with a private copy of the raw data that serves no further purpose. (Real world example: The parsing is a two-pass routine and thus can't simply process the data as it's read.)
– Loren Pechtel
Jun 2 '10 at 1:25
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Django filter queryset __in for *every* item in list
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Summary:
One option is, as suggested by jpic and sgallen in the comments, to add .filter() for each category. Each additional filter adds more joins, which should not be a problem for small set of categories.
There is the aggregation approach. This query would be short...
How would you compare jQuery objects?
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You need to compare the raw DOM elements, e.g.:
if ($(this).parent().get(0) === $('body').get(0))
or
if ($(this).parent()[0] === $('body')[0])
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Checking for an empty field with MySQL
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An empty field can be either an empty string or a NULL.
To handle both, use:
email > ''
which can benefit from the range access if you have lots of empty email record (both types) in your table.
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Tool for generating railroad diagram used on json.org [closed]
...n copy the SVG code or take screen shots.
You have to type in the grammar and it'll make the diagram.
For example, to create the first railroad diagram you show, you would use the code:
object ::= '{' ((string ':' value ) ( ',' string ':' value )*)? '}'
Then you could go on to define string a...
SQL multiple column ordering
I am trying to sort by multiple columns in SQL, and in different directions. column1 would be sorted descending, and column2 ascending.
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Getting a list of associative array keys
...ence below for browser support. It is supported in Firefox 4.20, Chrome 5, and Internet Explorer 9. Object.keys() contains a code snippet that you can add if Object.keys() is not supported in your browser.
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Getting “Skipping JaCoCo execution due to missing execution data file” upon executing JaCoCo
I'm using Maven 3.0.3, JUnit 4.8.1, and Jacoco 0.6.3.201306030806, and I am trying to create test coverage reports.
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