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Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?

In the x86-64 Tour of Intel Manuals , I read 3 Answers 3 ...
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Is a RelativeLayout more expensive than a LinearLayout?

...YtB6mlu7vA&t=1m41s https://www.youtube.com/watch?v=NYtB6mlu7vA&t=38m04s share | improve this answer | follow | ...
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How to remove all rows in a numpy.ndarray that contain non-numeric values

... >>> a = np.array([[1,2,3], [4,5,np.nan], [7,8,9]]) array([[ 1., 2., 3.], [ 4., 5., nan], [ 7., 8., 9.]]) >>> a[~np.isnan(a).any(axis=1)] array([[ 1., 2., 3.], [ 7., 8., 9.]]) and reassign this to a. Explanation: np.is...
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Comma separator for numbers in R?

...tor of characters. I'd only use that for printing. > prettyNum(12345.678,big.mark=",",scientific=FALSE) [1] "12,345.68" > format(12345.678,big.mark=",",scientific=FALSE) [1] "12,345.68" EDIT: As Michael Chirico says in the comment: Be aware that these have the side effect of padding the ...
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Import Error: No module named numpy

... answered Oct 19 '11 at 8:58 unutbuunutbu 665k138138 gold badges14831483 silver badges14721472 bronze badges ...
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Generate a Hash from string in Javascript

... 816 Object.defineProperty(String.prototype, 'hashCode', { value: function() { var hash = 0, ...
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How Do I 'git fetch' and 'git merge' from a Remote Tracking Branch (like 'git pull')

... answered Apr 8 '10 at 19:08 GarethGareth 109k3030 gold badges141141 silver badges151151 bronze badges ...
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Searching word in vim?

... Nathan FellmanNathan Fellman 104k8686 gold badges242242 silver badges302302 bronze badges ...
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Proper way to catch exception from JSON.parse

... | edited Dec 8 '16 at 20:32 Samuel Bolduc 13.6k55 gold badges3030 silver badges5353 bronze badges ...
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Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?

...exec/java_home -v 1.7)" or export JAVA_HOME="$(/usr/libexec/java_home -v 1.8)" Update: added -v flag based on Jilles van Gurp response. share | improve this answer | follow...