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How can I use if/else in a dictionary comprehension?
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@Marcin's answer covers it all, but just in case someone wants to see an actual example, I add two below:
Let's say you have the following dictionary of sets
d = {'key1': {'a', 'b', 'c'}, 'key2': {'foo', 'bar'}, 'key3': {'so', 'sad'}}
and you want ...
How can I get the current date and time in UTC or GMT in Java?
...TC. It's most accurate to say that Date itself doesn't have a time zone at all - it's just an instant in time, which could be regarded in multiple time zones. But when you create an instance, it doesn't depend on your time zone.
– Jon Skeet
Dec 28 '12 at 12:33
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How to properly overload the
I am writing a small matrix library in C++ for matrix operations. However my compiler complains, where before it did not. This code was left on a shelf for 6 months and in between I upgraded my computer from debian etch to lenny (g++ (Debian 4.3.2-1.1) 4.3.2
) however I have the same problem on a Ub...
C++11 range based loop: get item by value or reference to const
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@racarate: I cannot comment on the overall speed, and I think nobody can, without profiling it first. Frankly, I wont base my choice on the speed, rather the clarity of the code. If I want immutability, I'd use const for sure. However, whether it would be auto co...
How can I tell if a DOM element is visible in the current viewport?
...ut the browser vendors have also created getBoundingClientRect for specifically the purpose of finding element coordinates... Why wouldn't we use it?
– Prestaul
Jul 6 '15 at 15:25
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Android REST client, Sample?
...y if your use case demands it. For example, I do not have local storage at all; because my app can tolerate loss of a few REST responses.
My approach uses just AsyncTasks under the covers. In my case, I "call" these Tasks from my Activity instance; but to fully account for cases like screen rotation...
Single script to run in both Windows batch and Linux Bash?
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Actually, I find that # 2>NUL & ECHO Welcome to %COMSPEC%. manages to hide the error about the # command not being found by cmd. This technique is useful when you need to write a standalone line that will only be executed ...
How do you test functions and closures for equality?
...s Lattner wrote on the developer forums:
This is a feature we intentionally do not want to support. There are
a variety of things that will cause pointer equality of functions (in
the swift type system sense, which includes several kinds of closures)
to fail or change depending on optimiz...
What's the difference between HEAD^ and HEAD~ in Git?
...f thumb
Use ~ most of the time — to go back a number of generations, usually what you want
Use ^ on merge commits — because they have two or more (immediate) parents
Mnemonics:
Tilde ~ is almost linear in appearance and wants to go backward in a straight line
Caret ^ suggests an interesting s...
Adding a cross-reference to a subheading or anchor in another page
... because it works across files, when section headings are changed, and for all builders that support cross-references.
RST, in General
The tools that convert RST files to HTML do not necessarily have a notion of collection. This is the case for instance if you rely on github to convert RST files ...