大约有 40,000 项符合查询结果(耗时:0.0495秒) [XML]

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How to get the ThreadPoolExecutor to increase threads to max before queueing?

...ounded and full before more threads will be started. I believe I have finally found a somewhat elegant (maybe a little hacky) solution to this limitation with ThreadPoolExecutor. It involves extending LinkedBlockingQueue to have it return false for queue.offer(...) when there are already some tas...
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Does setting Java objects to null do anything anymore?

... object chain A->B->C, then once A is not reachable, A, B and C will all be eligible for garbage collection (assuming nothing else is referring to either B or C). There's no need, and never has been any need, to explicitly set references A->B or B->C to null, for example. Apart from tha...
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How can I build a small operating system on an old desktop computer? [closed]

...in, as I know writing an operating system is unbearably complicated (especially by oneself). 20 Answers ...
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Why Func instead of Predicate?

... Well, actually you have to place that in the context of the guideline, which is about writing a LINQ provider. So yeah, for LINQ operators, the guideline is to use Func<> and Expression<> as parameters for the extension met...
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When to use the different log levels

... I generally subscribe to the following convention: Trace - Only when I would be "tracing" the code and trying to find one part of a function specifically. Debug - Information that is diagnostically helpful to people more than just...
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How can I provide multiple conditions for data trigger in WPF?

...D are false, and set the default to true. – WeSam Abdallah Oct 28 '14 at 15:47 3 ...
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Using Java 8's Optional with Stream::flatMap

...latMap(Optional::stream) .findFirst(); Java 8 Yes, this was a small hole in the API, in that it's somewhat inconvenient to turn an Optional<T> into a zero-or-one length Stream<T>. You could do this: Optional<Other> result = things.stream() .map(this::resolv...
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Why use symbols as hash keys in Ruby?

...saves memory, because they are only stored once. Symbols in Ruby are basically "immutable strings" .. that means that they can not be changed, and it implies that the same symbol when referenced many times throughout your source code, is always stored as the same entity, e.g. has the same object id...
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What's the difference between Ruby's dup and clone methods?

..., name: "Favorites"> clone creates a new object with the same id, so all the changes made to that new object will overwrite the original record if hitting .save category2 = category.clone #=> #<Category id: 1, name: "Favorites"> ...
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Running a Haskell program on the Android OS

...ndroid NDK which comes with a GCC port for ARM architectures. JHC can trivially do this with a very small inf style file which describes the platform (word size, c-compiler, etc) I've done this with the Wii homebrew dev kit and it was quite easy. However jhc still has some stability issues with comp...