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How to cherry pick only changes for only one file, not the whole commit

...nged more, and you only want to add that line without those other changes, then a checkout is not what you want. Otherwise if you want to apply the patch introduced in a commit to only a single file, you have multiple options. You could run git cherry-pick -n, i.e. without committing it, edit the c...
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What are the differences between numpy arrays and matrices? Which one should I use?

... a convenient notation for matrix multiplication: if a and b are matrices, then a*b is their matrix product. import numpy as np a = np.mat('4 3; 2 1') b = np.mat('1 2; 3 4') print(a) # [[4 3] # [2 1]] print(b) # [[1 2] # [3 4]] print(a*b) # [[13 20] # [ 5 8]] On the other hand, as of Python ...
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How to manage a redirect request after a jQuery Ajax call

I'm using $.post() to call a servlet using Ajax and then using the resulting HTML fragment to replace a div element in the user's current page. However, if the session times out, the server sends a redirect directive to send the user to the login page. In this case, jQuery is replacing the div ...
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Why does one often see “null != variable” instead of “variable != null” in C#?

...l first: if(null == myDuck) If your class Duck overrides the == operator, then if(myDuck == null) can go into an infinite loop. Using null first uses a default equality comparator and actually does what you were intending. (I hear you get used to reading code written that way eventually - I just ...
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How to cherry pick a range of commits and merge into another branch?

...re, and would involve something like: If you want to use a patch approach then "git format-patch|git am" and "git cherry" are your options. Currently, git cherry-pick accepts only a single commit, but if you want to pick the range B through D that would be B^..D in git lingo, so git rev-list --rev...
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How to remove all debug logging calls before building the release version of an Android app?

...(...); public static *** v(...); } So you would save that to a file, then call ProGuard from Ant, passing in your just-compiled JAR and the Android platform JAR you're using. See also the examples in the ProGuard manual. Update (4.5 years later): Nowadays I used Timber for Android logging....
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What is the email subject length limit?

...n practice" totally depends on your app. If you're saving received emails then you have to support unlimited lengths. – Rob Oct 12 '19 at 1:23 add a comment ...
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Spring Boot application as a Service

...p_servicename After that you can do the usual /etc/init.d/myapp start Then setup a link in whichever runlevel you want the app to start/stop in on boot if so desired. As a systemd service To run a Spring Boot application installed in var/myapp you can add the following script in /etc/syste...
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How can I save a screenshot directly to a file in Windows? [closed]

...in 7 just use the snipping tool: Most easily accessed via pressing Start, then typing "sni" (enter). or then sni enter Prior versions of Windows I use the following keyboard combination to capture, then save using mspaint. After you do it a couple times, it only takes 2-3 seconds: Alt+PrintSc...
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Questions every good Java/Java EE Developer should be able to answer? [closed]

...even know the basic conceptual differences between those basic interfaces, then you're definitely not a good Java developer. – Joachim Sauer Jan 25 '10 at 13:01 13 ...