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IntelliJ Organize Imports
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It's now Setting > Editor -> General > Auto Import
– Lucky
Sep 13 '16 at 14:29
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How can javascript upload a blob?
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Do you know how to do this without AJAX too?
– William Entriken
Aug 7 '13 at 2:05
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When - and why - should you store data in the Windows Registry?
... used the registry.
From windows Vista, we use ini files although they are now xml based.
The registry is machine dependent. I have never liked it because its getting to slow and it is almost imposible to find the thing you need. That's why I like simple ini or other setting files. You know where ...
What really is a deque in STL?
...ular vector of capacity 1000 with 100 elements in it at positions 0 to 99. Now when a push_Front happens you just push at the end i.e. at position 999, then 998 etc. until the two ends meet. Then you reallocate (with exponential growth to guarantee amortizet constant times) just like you would do wi...
equals vs Arrays.equals in Java
...or purists: it's perfectly fine, and that also means, don't use it, ever.
Now the expected behaviour for equals is to compare data. The default behaviour is to compare the identity, as Object does not have any data (for purists: yes it has, but it's not the point); assumption is, if you need equals...
What's the use of ob_start() in php?
...ed (server-side).
The dynamic content is always(?) going to be a string. Now you have to combine this stringified dynamic html with any literal, direct-to-display html ... into one meaningful html node structure.
This usually forces the developer to wrap all that direct-to-display content into a ...
Is iterating ConcurrentHashMap values thread safe?
...if an existing iterator will reflect later changes to the map. So I don't know, and by specification no one does (without looking at the code, and that may change with every update of the runtime). So you can't rely on it.
– Waldheinz
Oct 3 '15 at 8:06
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How do I provide custom cast support for my class?
...er, if you use:
object name = "Test";
Role role = (Role) name;
You will now get an InvalidCastException because string cannot be cast to Role, why, the compiler only looks for implicit/explicit casts at compile time based upon their compiled type. In this case the compiler sees name as an object ...
Rails: Default sort order for a rails model?
...atenating them with periods between them, so with the above scopes you can now use Book.published.confirmed.
With this method, the query is not actually executed until actual results are needed (lazy evaluation), so 7 scopes could be chained together but only resulting in 1 actual database query,...
Why doesn't Java Map extend Collection?
...ven key
maps to, nor can you delete the entry
for a given key without knowing what
value it maps to.
Collection could be made to extend
Map, but this raises the question:
what are the keys? There's no really
satisfactory answer, and forcing one
leads to an unnatural interface.
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