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About Java cloneable
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Note that Block says not to use Cloneable. He does not say don't use cloning (or at least I hope not). There are many ways to implement cloning simply that are far more efficient than classes like SerializationUtils or BeanUtils that use reflection. See my post below for...
Dictionary returning a default value if the key does not exist [duplicate]
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To open a can of worms, these extensions work when key doesn't exist, but TryGetValue throws if key is null. Knowing whether key is nullable or not would make this a trivial check.
– ProfK
Sep 27 '12 at 6:12
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:active pseudo-class doesn't work in mobile safari
...Pod, specifying styling for an :active pseudo-class for an <a> tag doesn't trigger when you tap on the element. How can I get this to trigger? Example code:
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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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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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How does Rails keep track of which migrations have run for a database?
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