大约有 47,000 项符合查询结果(耗时:0.0780秒) [XML]

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Redirecting Output from within Batch file

I am creating a batch file with some simple commands to gather information from a system. The batch file contains commands to get the time, IP information, users, etc. ...
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Arduino Sketch upload issue - avrdude: stk500_recv(): programmer is not responding

...e with an ATmega328 . I am working on Ubuntu 12.04 (Precise Pangolin), and the Arduino IDE's version is 1.0. Recently, I tried to upload a few of the sample sketches onto it, such as the Blink one. However, none of my attempts are working and they result in the same error every time I try it: ...
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How to implement one-to-one, one-to-many and many-to-many relationships while designing tables?

Can anyone explain how to implement one-to-one, one-to-many and many-to-many relationships while designing tables with some examples? ...
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Get image data url in JavaScript?

... the same domain as the page, or has the crossOrigin="anonymous" attribute and the server supports CORS. It's also not going to give you the original file, but a re-encoded version. If you need the result to be identical to the original, see Kaiido's answer. You will need to create a canvas eleme...
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How can I install Apache Ant on Mac OS X?

I tried to install Apache Ant on my Mac and I followed the next steps : 8 Answers 8 ...
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How efficient is locking an unlocked mutex? What is the cost of a mutex?

...bunch of mutexes or a single one for an object. If you have many threads and the access to the object happens often, then multiple locks would increase parallelism. At the cost of maintainability, since more locking means more debugging of the locking. How efficient is it to lock a mutex? I.e....
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How do CUDA blocks/warps/threads map onto CUDA cores?

...ns. The programmer divides work into threads, threads into thread blocks, and thread blocks into grids. The compute work distributor allocates thread blocks to Streaming Multiprocessors (SMs). Once a thread block is distributed to a SM the resources for the thread block are allocated (warps and sha...
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Date ticks and rotation in matplotlib

...sn't do anything, plt.gca() does not give you the axes you want to modify, and so plt.xticks, which acts on the current axes, is not going to work. For an object-oriented approach not using plt.xticks, you can use plt.setp( axs[1].xaxis.get_majorticklabels(), rotation=70 ) after the two avail_pl...
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Why check both isset() and !empty()

Is there a difference between isset and !empty . If I do this double boolean check, is it correct this way or redundant? and is there a shorter way to do the same thing? ...
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What is an intuitive explanation of the Expectation Maximization technique? [closed]

... here. Suppose we have some data sampled from two different groups, red and blue: Here, we can see which data point belongs to the red or blue group. This makes it easy to find the parameters that characterise each group. For example, the mean of the red group is around 3, the mean of the blue...