大约有 19,600 项符合查询结果(耗时:0.0258秒) [XML]

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Nohup is not writing log to output file

... python as well as other C stdio-based programs uses line-buffering in interactive case (stdout is connected to a tty) and block-buffering when redirected to a file. If python -u doesn't work; nohup might have introduced its own buffering. ...
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What is the gain from declaring a method as static

...inally better at most, since the code does not need to do dynamic dispatch based on the type. However, a much stronger argument against refactoring into static methods is that currently using static is considered bad practice. Static methods / variables do not integrate well into an object oriente...
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Why does sun.misc.Unsafe exist, and how can it be used in the real world?

...tiated by sun.misc.Unsafe, useful for instrumentation sun.misc.Unsafe.arrayBaseOffset and arrayIndexScale can be used to develop arraylets,a technique for efficiently breaking up large arrays into smaller objects to limit the real-time cost of scan, update or move operations on large objects http://...
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Remove a JSON attribute [duplicate]

...ects or other values, since they don't have a "key". Arrays use a position based index, which is why you would always access values in an array using integer based indices. – praneetloke Apr 1 '18 at 17:16 ...
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What's the difference between `=` and `

...eed for doing something like this, can only be performed using the ("gets"-based) <<- operator, and that there is not an "equals"-based equivalent. – George Dontas Feb 16 '10 at 14:59 ...
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Format file size as MB, GB, etc [duplicate]

... It is surprising for me, but a loop-based algorithm is about 10% faster. public static String toNumInUnits(long bytes) { int u = 0; for ( ; bytes > 1024*1024; bytes >>= 10) { u++; } if (bytes > 1024) u++; return S...
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Linux command to translate DomainName to IP [closed]

... If you are using Arch Linux or based on that distribution, you'll find these tools and nslookup in bind-tools package. – lava-lava Oct 12 '18 at 12:13 ...
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Android Python Programming [closed]

...ng you need to do is to check your requirement against what they can offer based on their documentation. They have create an amazing framework for input such as multi-touch or pen handling. They use OpenGL ES internally, as a result complex graphics and visualizations can run very fast when interact...
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Remove all special characters from a string in R?

...e, you want the str_replace_all from the stringr package, though gsub from base R works just as well. The exact regular expression depends upon what you are trying to do. You could just remove those specific characters that you gave in the question, but it's much easier to remove all punctuation c...
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How to filter array in subdocument with MongoDB [duplicate]

... Use $filter aggregation Selects a subset of the array to return based on the specified condition. Returns an array with only those elements that match the condition. The returned elements are in the original order. db.test.aggregate([ {$match: {"list.a": {$gt:3}}}, // <-- mat...