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Null coalescing in powershell
... evaluated
Null Conditional Assignment
$x = $null
$x ??= 100 # $x is now 100
$x ??= 200 # $x remains 100
Ternary Operator
$true ? "this value returned" : "this expression not evaluated"
$false ? "this expression not evaluated" : "this value returned"
Previous Versions:
No need for ...
Why should I declare a virtual destructor for an abstract class in C++?
I know it is a good practice to declare virtual destructors for base classes in C++, but is it always important to declare virtual destructors even for abstract classes that function as interfaces? Please provide some reasons and examples why.
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Is there a list of Pytz Timezones?
I would like to know what are all the possible values for the timezone argument in the Python library pytz. How to do it?
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Send a pull request on GitHub for only latest commit
.... The pull request UI on github.com shows the last 9 commits and I don't know how to filter that down.
7 Answers
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C++ Build Systems - What to use? [closed]
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You can use Gradle now: https://docs.gradle.org/current/userguide/native_software.html
This seems to have matured quite a bit in the years since I originally posted this. The page saying that the project is "incubating" has disappeared, but I ...
How to sort my paws?
...ellent answer that helped me detect where a paw hit a pressure plate, but now I'm struggling to link these results to their corresponding paws:
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Event Signature in .NET — Using a Strong Typed 'Sender'? [closed]
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It seems Microsoft has picked up on this as a similar example is now on MSDN:
Generic Delegates
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Where can I find Android source code online? [closed]
...up android. Some of the projects (such as Kernel) have been removed and it now only points you to clonable git repositories.
To get all the code locally, you can use the repo helper program, or you can just clone individual repositories.
And others:
Downloading the Source Tree
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How to delete images from a private docker registry?
...ans that an image is based on another image:
A <- B <- C <- D
Now we add tags to the picture:
A <- B <- C <- D
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<version1>
Here, the tag <version1> references the image C and the tag <version2> r...
Ruby's ||= (or equals) in JavaScript?
... minor changes if they discover major unexpected problems.
You can use it now using the plugin-proposal-logical-assignment-operators Babel plugin. I have never used that plugin, so I have no idea how well it works.
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