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How can I easily fixup a past commit?

... --interactive --autosquash. So the simplest way to fixup a past commit is now: $ git add ... # Stage a fix $ git commit --fixup=a0b1c2d3 # Perform the commit to fix broken a0b1c2d3 $ git rebase -i --autosquash a0b1c2d3~1 # Now merge fixup commit into broken comm...
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How to embed a video into GitHub README.md?

... Those links seem to be broken; they take me to github.com/contact now. Does anyone have access to an archived version? I'm having a hard time getting it out of the Google Cache or the Wayback Machine. – Benjamin Oakes May 2 '12 at 12:45 ...
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How can I save an image with PIL?

... BMP (without the dot) or pass the output name with the extension already. Now to handle the error you need to properly modify your data in the frequency domain to be saved as an integer image, PIL is telling you that it doesn't accept float data to save as BMP. Here is a suggestion (with other mino...
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How can building a heap be O(n) time complexity?

...t of the nodes we are calling siftDown from the bottom of the tree, we are now calling siftDown from the top of the tree on each iteration! Although the tree is shrinking, it doesn't shrink fast enough: The height of the tree stays constant until you have removed the first half of the nodes (when yo...
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Getting ssh to execute a command in the background on target machine

... I know this is a very old answer of yours, but could you add some comments on why the parentheses way is the best way, what (if any) difference adding nohup makes, and why and when you would use nice? I think that would add a lo...
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Is it good practice to NULL a pointer after deleting it?

... Imagaine a mainainer comming back a year later and seeing foo deleted. He now believes he can re-use the pointer unfortunately he may miss the second delete (it may not even be in the same function) and now the re-use of the pointer now gets trashed by the second delete. Any access after the second...
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Monad in plain English? (For the OOP programmer with no FP background)

... take a type, say int, and add a new capability to that type, namely, that now it can be null when it couldn't before. As a second example, consider IEnumerable<T>. It is an amplifier of types. It lets you take a type, say, string, and add a new capability to that type, namely, that you can n...
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What is copy-on-write?

I would like to know what copy-on-write is and what it is used for? The term 'copy-on-write array' is mentioned several times in the Sun JDK tutorials but I didn't understand what it meant. ...
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How to get current time and date in Android

...an (but no longer should - see below!) use android.text.format.Time: Time now = new Time(); now.setToNow(); From the reference linked above: The Time class is a faster replacement for the java.util.Calendar and java.util.GregorianCalendar classes. An instance of the Time class represe...
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Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b') [duplicate]

...the empty String (its length is zero); otherwise the result is true. Now to '0' == true. Two type conversions will take place here. We can follow this in the specification, section 11.9.3, The Abstract Equality Comparison Algorithm. The operands are denoted as x and y (x == y). In our case...