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Reordering of commits

... c ... pick a ... squash d ... squash e ... squash g ... pick b squash f Now the history should look like this: c - [a+d+e+g] - [b+f] (branchA) / --o-x-x-x-x-x-x-x-x-x-x (master) Now, let's grab the newly-squashed commit b+f for branchB. git checkout branchB git cherry-pick branchA # c...
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arrow operator (->) in function heading

...ifier ( argument-declarations... ) -> return_type They are equivalent. Now when they are equivalent, why do you ever want to use the latter? Well, C++11 introduced this cool decltype thing that lets you describe type of an expression. So you might want to derive the return type from the argument...
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git:// protocol blocked by company, how can I get around that?

...$ curl http://github.com:9418 curl: (7) couldn't connect to host OK, so now we have determined it is our git port being blocked by a firewall, what can we do about it? Read on :) Basic URL Rewriting Git provides a way to rewrite URLs using git config. Simply issue the following command: git co...
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Convert LocalDate to LocalDateTime or java.sql.Timestamp

...ttribute(Timestamp ts) { return ts.toLocalDateTime(); } } So now it is relative timezone independent time. Additionally it is easy do: LocalDate ld = ldt.toLocalDate(); LocalTime lt = ldt.toLocalTime(); Formatting: DateTimeFormatter DATE_TME_FORMATTER = DateTimeFormatter.ofPat...
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Format timedelta to string

... As you know, you can get the total_seconds from a timedelta object by accessing the .seconds attribute. Python provides the builtin function divmod() which allows for: s = 13420 hours, remainder = divmod(s, 3600) minutes, seconds =...
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How would I create a UIAlertView in Swift?

...nil)) self.presentViewController(alert, animated: true, completion: nil) Now UIAlertController is a single class for creating and interacting with what we knew as UIAlertViews and UIActionSheets on iOS 8. Edit: To handle actions: alert.addAction(UIAlertAction(title: "OK", style: .Default, handle...
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Understanding recursion [closed]

...value of its left child, if any, and the value of its right child, if any. Now recall that the children, if they're not null, are also nodes. So to sum the left child, we would add the value of child node itself to the value of its left child, if any, and the value of its right child, if any. So ...
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What is std::string::c_str() lifetime?

...use the strings are not modified while in that scope. (However, we don't know what use_foo() or ~Foo() might be doing with those values; if they copy the strings elsewhere, then they should do a true copy, and not just copy the char pointers.) ...
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Select N random elements from a List in C#

... @recursive: The proof is almost trivial. We know how to select K items out of K for any K and how to select 0 items out of N for any N. Assume we know a method to uniformly select K or K-1 items out of N-1 >= K; then we can select K items out of N by selecting the fi...
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Android: Expand/collapse animation

...o I post my actual solution. The main advantage is that you don't have to know the expanded height to apply the animation and once the view is expanded, it adapts height if content changes. It works great for me. public static void expand(final View v) { int matchParentMeasureSpec = View.Measur...