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移动前端开发之viewport的深入理解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...站，移动设备上的浏览器都会把自己默认的viewport设为980px或1024px（也可能是其它值，这个是由设备自己决定的），但带来的后果就是浏览器会出现横向滚动条，因为浏览器可视区域的宽度是比这个默认的viewport的宽度要小的。下...
When to use , tag files, composite components and/or custom components?
...ith Facelets recently and got puzzled by new composite components knowing existing <ui:include> and other templating techniques offered by Facelets 1.x.
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What Makes a Good Unit Test? [closed]
...uld not rely on each other - Isolated. No assumptions about order of test execution. Ensure 'clean slate' before each test by using setup/teardown appropriately
Professional: In the long run you'll have as much test code as production (if not more), therefore follow the same standard of good-design...
How to use the “required” attribute with a “radio” input field
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@kumar_harsh : Any checkbox marked as required must be checked. Likewise, marking a checkbox required has not effect on any other checkboxes (same name or not). There is no simple markup to indicate indicate "of these x checkboxes with the same name...
What does “S3 methods” mean in R?
...oglecode.com/svn/trunk/google-r-style.html )*. However, I do not know the exact definition of S3 methods/objects.
6 Answers...
How can I quantify difference between two images?
...both images as arrays (scipy.misc.imread) and calculate an element-wise (pixel-by-pixel) difference. Calculate the norm of the difference.
Option 2: Load both images. Calculate some feature vector for each of them (like a histogram). Calculate distance between feature vectors rather than images.
H...
Is gcc std::unordered_map implementation slow? If so - why?
...ady a report in the mailing list. The discussion seem to be pointing to "fixes" to max_load_factor handling, which led to the difference in performance.
– jxh
Jul 24 '12 at 18:21
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No ConcurrentList in .Net 4.0?
..., unless you "cheat" and just use some sort of linked list and let the indexing suck).
What I thought might be worthwhile was a thread-safe, limited subset of IList<T>: in particular, one that would allow an Add and provide random read-only access by index (but no Insert, RemoveAt, etc., and ...
Explain the use of a bit vector for determining if all characters are unique
... (flag). Each bit in your code states whether the character with bit's index was found in string or not. You could use bit vector for the same reason instead of int. There are two differences between them:
Size. int has fixed size, usually 4 bytes which means 8*4=32 bits (flags). Bit vector usuall...
What is the difference between LL and LR parsing?
Can anyone give me a simple example of LL parsing versus LR parsing?
5 Answers
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