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Eclipse error: “The import XXX cannot be resolved”
...ject by going to the following menu item:
Project > Clean...
If that doesn't work, try removing the jars from the build path and adding them again.
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What does the > (greater than bracket) mean beside file names in Eclipse's Package Explorer?
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What does map(&:name) mean in Ruby?
I found this code in a RailsCast :
16 Answers
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Getting the folder name from a path
...his approach works whether or not the path actually exists. This approach, does however, rely on the path initially ending in a filename. If it's unknown whether the path ends in a filename or folder name - then it requires that you check the actual path to see if a file/folder exists at the locatio...
How to free memory in Java?
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It does force the Garbage Collector to run. It does not force it to free memory though...
– Pablo Santa Cruz
Oct 14 '09 at 18:04
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How does Rails keep track of which migrations have run for a database?
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Is std::vector so much slower than plain arrays?
...space for the objects (that is, it changes the capacity of the vector) but does not create the objects (that is, the size of the vector is left unchanged).
– James McNellis
Sep 8 '10 at 3:03
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What database does Google use?
...gabytes in size.
Architecture
BigTable is not a relational database. It does not support joins nor does it support rich SQL-like queries. Each table is a multidimensional sparse map. Tables consist of rows and columns, and each cell has a time stamp. There can be multiple versions of a cell with ...
Behaviour of final static method
...ou really want method ts(), whenever called, even from a subclass, that is does what you want it to do and not to be hidden by a subclass version. Then you could make it final and prevent it from being hidden in the subclass. And you can be sure that the following code will call the method from your...
Where does PostgreSQL store the database?
Where are the files for a PostgreSQL database stored?
13 Answers
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