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Static implicit operator
...e:
XmlBase myBase = new XmlBase();
XElement myElement = myBase;
And the compiler won't complain! At runtime, the conversion operator will be executed - passing myBase in as the argument, and returning a valid XElement as the result.
It's a way for you as a developer to tell the compiler:
"ev...
MYSQL Dump only certain rows
...problem wasn't that the column name is outside the quotes. This is a shell command, so you need to write shell syntax for the string date_pulled='2011-05-23'. That means you need to quote or escape the single quote characters, so they're included in the string rather than being interpreted as quotes...
Why can't I use an alias in a DELETE statement?
In SQL Server Compact Edition in Visual Studio 2010 (maybe SQL Server and SQL in general, I don't know), this command works:
...
CATALINA_OPTS vs JAVA_OPTS - What is the difference?
... catalina.sh startup and shutdown script for Tomcat. They are described in comments within that file as:
[JAVA_OPTS]: (optional) Java runtime options used when the "start", "stop" or "run"
command is executed
and
[CATALINA_OPTS]: (optional) Java runtime options
used when the "start" o...
Rails - Nested includes on Active Records?
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create multiple tag docker image
...s with Dockerfiles but you can create multiple tags on your images via the command line.
Use this to list your image ids:
$ docker images
Then tag away:
$ docker tag 9f676bd305a4 ubuntu:13.10
$ docker tag 9f676bd305a4 ubuntu:saucy
$ docker tag eb601b8965b8 ubuntu:raring
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What are the differences between PMD and FindBugs?
There was a question comparing PMD and CheckStyle . However, I can't find a nice breakdown on the differences/similarities between PMD and FindBugs. I believe a key difference is that PMD works on source code, while FindBugs works on compiled bytecode files. But in terms of capabilities, should it ...
Spring Data JPA find by embedded object property
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Downcasting shared_ptr to shared_ptr?
...inter_cast<Derived> (base);
Documentation: https://en.cppreference.com/w/cpp/memory/shared_ptr/pointer_cast
Also, I don't recommend using cast operator in the base class. Implicit casting like this may become the source of bugs and errors.
-Update: If the type is not polymorphic, std::stat...