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How to find all the subclasses of a class given its name?
...'s module hasn't been imported yet - then that subclass doesn't exist yet, and __subclasses__ won't find it.
You mentioned "given its name". Since Python classes are first-class objects, you don't need to use a string with the class's name in place of the class or anything like that. You can just...
Semicolons superfluous at the end of a line in shell scripts?
...lons at the end of a line are superfluous, since the newline is also a command separator. case specifically needs double semicolons at the end of the last command in each pattern block; see help case for details.
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Private virtual method in C++
...ected you're implicitly trusting the writer of any derived class to understand and properly use the protected internals, just the way a friend declaration implies a deeper trust for private members.
Users who get bad behavior from violating that trust (e.g. labeled 'clueless' by not bothering to r...
Show a PDF files in users browser via PHP/Perl
...n why I use cgi to show the pdf is I want to track the clicks for the pdf, and cloak the real location of the saved pdf.
5 ...
WPF Command Line
I am trying to create a WPF application that takes command line arguments. If no arguments are given, the main window should pop up. In cases of some specific command line arguments, code should be run with no GUI and exit when finished. Any suggestions on how this should properly be done would be a...
Calling a function from a string in C#
...hisType = this.GetType();
MethodInfo theMethod = thisType.GetMethod(TheCommandString);
theMethod.Invoke(this, userParameters);
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How does MongoDB sort records when no sort order is specified?
...ementation detail. Maintaining order is extra overhead for storage engines and MongoDB's API does not mandate predictability outside of an explicit sort() or the special case of fixed-sized capped collections which have associated usage restrictions. For typical workloads it is desirable for the sto...
Export Postgresql table data using pgAdmin
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Just right click on a table and select "backup". The popup will show various options, including "Format", select "plain" and you get plain SQL.
pgAdmin is just using pg_dump to create the dump, also when you want plain SQL.
It uses something like this...
Add Variables to Tuple
I am learning Python and creating a database connection.
While trying to add to the DB, I am thinking of creating tuples out of information and then add them to the DB.
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How can I get enum possible values in a MySQL database?
...M $table WHERE Field = '$field'")[0]["Type"];
– Alessandro.Vegna
Aug 27 '14 at 9:14
to convert the Type Value into an ...