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Can I use a function for a default value in MySql?
I want to do something like this:
8 Answers
8
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How to check for an active Internet connection on iOS or macOS?
... }
}
reachability.whenUnreachable = { _ in
print("Not reachable")
}
do {
try reachability.startNotifier()
} catch {
print("Unable to start notifier")
}
Objective-C
1) Add SystemConfiguration framework to the project but don't worry about including it anywhere
2) Add Tony Million...
angularjs newline filter with no other html
...html, a <preformated text> way ? It will avoid from using filters or do any kind of processing.
All you have to do is display the text within an element that has this CSS:
<p style="white-space: pre;">{{ MyMultiLineText}}</p>
This will parse and display \n as new lines. Works g...
Storing C++ template function definitions in a .CPP file
... stored in a CPP file instead of inline in the header. I know this can be done as long as you know which template types will be used. For example:
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Comparing Timer with DispatcherTimer
what is a difference between System.Windows.Forms.Timer() and System.Windows.Threading.DispatcherTimer() ? In which cases, we should use them? any best practices ?
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Unit testing code with a file system dependency
... unit test or an integration test. You just have to make sure that if you do interact with the file system, there are no unintended side effects. Specifically, make sure that you clean up after youself -- delete any temporary files you created -- and that you don't accidentally overwrite an existi...
Are Java static calls more or less expensive than non-static calls?
... static versus non-static are based either on very old JVMs (which did not do anywhere near the optimization that Hotspot does), or some remembered trivia about C++ (in which a dynamic call uses one more memory access than a static call).
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When would anyone use a union? Is it a remnant from the C-only days?
I have learned but don't really get unions. Every C or C++ text I go through introduces them (sometimes in passing), but they tend to give very few practical examples of why or where to use them. When would unions be useful in a modern (or even legacy) case? My only two guesses would be programming ...
How do you loop through currently loaded assemblies?
I've got a "diagnostics" page in my ASP.NET application which does things like verify the database connection(s), display the current appSettings and ConnectionStrings, etc. A section of this page displays the Assembly versions of important types used throughout, but I could not figure out how to e...
How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
I don't know what I've done incorrectly, but I can't include JSTL. I have jstl-1.2.jar, but unfortunately I get exception:
...