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Use of class definitions inside a method in Java
...functions (event handlers in GUIs, like onClick() when a Button is clicked etc.), it's quite usual to use "anonymous classes" - first of all because you can end up with a lot of them. But sometimes anonymous classes aren't good enough - especially, you can't define a constructor on them. In these ca...
How can Bash execute a command in a different directory context?
...shd and popd builtins for this purpose. For example:
# do something with /etc as the working directory
cd /etc
:
# do something with /tmp as the working directory
cd /tmp
:
You use the builtins just like any other command, and can change directory context as many times as you like in a script.
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Difference between . and : in Lua
...nly once. In this case, there's a clear difference between obj.method(obj, etc) and obj:method(etc).
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What Ruby IDE do you prefer? [closed]
...xclusively for PHP/Ruby development, and standard Eclipse for JAVA, C, C++ etc. This prevents me from dealing with pointless warnings.
– Zee Spencer
Jun 18 '10 at 14:40
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Could not find default endpoint element
...s are read from the main project in a solution, be that web, winforms, wpf etc. Say for example you have a class library project to access a database, the connectionString entry will need to be in the main project config rather than the class library config.
– Ciaran Bruen
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What is meant by “managed” vs “unmanaged” resources in .NET?
... Adding a bit more clarification: SqlConnection (or FileStream, etc) are managed resources which internally use unmanaged resources which GC is unaware of.
– jimvfr
Jan 17 '13 at 2:21
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Best way to check if a URL is valid
...ER_VALIDATE_URL will not validate the protocol of a url. So ssh://, ftp:// etc will pass.
– Seph
May 10 '14 at 14:03
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Linux c++ error: undefined reference to 'dlopen'
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I've found that the order of the options matters too. On a project using sqlite3, I have to put -ldl (and -lpthread) after -lsqlite3. Don't know what that is, I'm sure the answer is there if I would just RTFM.
– user2918461...
How to Update Multiple Array Elements in mongodb
...ave to be searched, and have to load all of them (or the nested arrays) in order to update... + also a bit troublesome to implement if this has to be done asynchronously...
– Ixx
Oct 1 '13 at 20:24
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What is boxing and unboxing and what are the trade offs?
...alue on the heap. Frequently that's just the machine types (ints, floats, etc), structs, and sometimes static sized arrays. .NET-land calls them value types (as opposed to reference types). Java folks call them primitive types. Haskellions just call them unboxed.
** I'm also focusing on Java, H...