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What is a sealed trait?
...lternative to enums. Since they can be only extended in a single file, the compiler knows every possible subtypes and can reason about it.
For instance with the declaration:
sealed trait Answer
case object Yes extends Answer
case object No extends Answer
The compiler will emit a warning if a mat...
DatabaseError: current transaction is aborted, commands ignored until end of transaction block?
...ut it's possible that the version you used before somehow defaulted to autocommit mode while the new version does not. The error might still have occurred, but you could more easily have missed it. It's also possible that data type conversion or something else has changed since the old version. R...
“405 method not allowed” in IIS7.5 for “PUT” method
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How do I find out my python path using python?
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os.sep is incorrect, see stackoverflow.com/questions/1499019/…
– Mark Ransom
Sep 30 '09 at 16:03
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Create web service proxy in Visual Studio from a WSDL file
...ing the generated file (.cs) into your project.
Fire up the Visual Studio Command prompt (under visual studio/tools in the start menu) then type
>wsdl.exe [path To Your WSDL File]
That'll spit out a file, which you copy/move and include in your project. That file contains a class which is a p...
Calculate the date yesterday in JavaScript
...'t verify "all" browsers but worked in all I tested camo.githubusercontent.com/…
– James Kyburz
Mar 24 '14 at 20:57
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How to override the properties of a CSS class using another CSS class
...lied to is or does (e.g. button, name-label, etc.). Others feel that CSS becomes unmanageable if you use this approach and you should use "utility-first" or "functional" css where classes correspond to property values (e.g. margin-top-4, width-10, etc.). Historically the "semantic" approach has been...
How to open a second activity on click of button in android app
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Using jQuery to test if an input has focus
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community wiki
8 revs, 4 users 91%gnarf
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Find a file in python
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Comprehention list can replace the function, e.g. find_all: res = [os.path.join(root, name) for root, dirs, files in os.walk(path) if name in files]
– Nir
Jul 27 '19 at 14:48
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