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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?

... As Sven mentioned, x[[[0],[2]],[1,3]] will give back the 0 and 2 rows that match with the 1 and 3 columns while x[[0,2],[1,3]] will return the values x[0,1] and x[2,3] in an array. There is a helpful function for doing the first example I gave, n...
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How can I apply a function to every row/column of a matrix in MATLAB?

...m the columns of a matrix M. You can do this simply using sum: M = magic(10); %# A 10-by-10 matrix columnSums = sum(M, 1); %# A 1-by-10 vector of sums for each column And here is how you would do this using the more complicated num2cell/cellfun option: M = magic(10); ...
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Why is early return slower than else?

... +100 This is a pure guess, and I haven't figured out an easy way to check whether it is right, but I have a theory for you. I tried your ...
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Gradle proxy configuration

...response: HTTP Only Proxy configuration gradlew -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=3128 "-Dhttp.nonProxyHosts=*.nonproxyrepos.com|localhost" HTTPS Only Proxy configuration gradlew -Dhttps.proxyHost=127.0.0.1 -Dhttps.proxyPort=3129 "-Dhttp.nonProxyHosts=*.nonproxyrepos.com|localh...
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Path to Powershell.exe (v 2.0)

Where is the Powershell (version 2.0) located? What is the path to Powershell.exe? I have Windows Server 2008 and Powershell installed. When I look at this folder: ...
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Docker EXPOSE a port only to Host

... Sure, just bind it to localhost, like this: docker run -p 127.0.0.1:27017:27017 Also: Your host can also talk to each container normally over its IP. Use docker inspect $ID to get a json dump (beside other stuff) containing the network IP. ...
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FAQ Section: SMS - Frequently Asked Questions - MIT App Inventor Community

...imary: #222222; --secondary: #ffffff; --tertiary: #0088cc; --quaternary: #e45735; --highlight: #ffff4d; --success: #009900; } } /* then deal with dark scheme */ @media (prefers-color-scheme: dark) { ...
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How to convert number to words in java

... 107 Here is the code, I don't think there is any method in SE. It basically converts number to str...
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How can I sort a dictionary by key?

What would be a nice way to go from {2:3, 1:89, 4:5, 3:0} to {1:89, 2:3, 3:0, 4:5} ? I checked some posts but they all use the "sorted" operator that returns tuples. ...
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Implement Stack using Two Queues

... Richard 40.9k2222 gold badges134134 silver badges203203 bronze badges answered Mar 27 '09 at 2:17 SvanteSvante...