大约有 48,000 项符合查询结果(耗时:0.0435秒) [XML]

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Difference between \b and \B in regex

I am reading a book on regular expression and I came across this example for \b : 9 Answers ...
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Algorithm for creating a school timetable

...ble. Basically, it's about optimizing "hour-dispersion" (both in teachers and classes case) for given class-subject-teacher associations. We can assume that we have sets of classes, lesson subjects and teachers associated with each other at the input and that timetable should fit between 8AM and 4P...
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Does a favicon have to be 32x32 or 16x16?

I'd like to use a single image as both a regular favicon and iPhone/iPad friendly favicon. 9 Answers ...
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Renaming or copying files and folder using NERDTree on Vim. Is it possible?

I checked the documentation and I couldn't find a way o renaming or copying files and folder using NERDTree. Is it possible? ...
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Is there a difference between foreach and map?

...n a particular language, but is there a difference between a map operation and a foreach operation? Or are they simply different names for the same thing? ...
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How to debug Ruby scripts [closed]

I copied the following Ruby code from the Internet and made a few changes but it doesn't work. 17 Answers ...
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How much does it cost to develop an iPhone application? [closed]

... I'm one of the developers for Twitterrific and to be honest, I can't tell you how many hours have gone into the product. I can tell you everyone who upvoted the estimate of 160 hours for development and 40 hours for design is fricken' high. (I'd use another phrase, bu...
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Simulator or Emulator? What is the difference?

While I understand what simulation and emulation mean in general, I almost always get confused about them. Assume that I create a piece of software that mimics existing hardware/software, what should I call it? A simulator or an emulator? ...
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Using Transactions or SaveChanges(false) and AcceptAllChanges()?

I have been investigating transactions and it appears that they take care of themselves in EF as long as I pass false to SaveChanges() and then call AcceptAllChanges() if there are no errors: ...
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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?

...ce a NumPy nxn array. I want to extract an arbitrary selection of m rows and columns of that array (i.e. without any pattern in the numbers of rows/columns), making it a new, mxm array. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it. ...