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Insert into … values ( SELECT … FROM … )
...ble using the input from another table. Although this is entirely feasible for many database engines, I always seem to struggle to remember the correct syntax for the SQL engine of the day ( MySQL , Oracle , SQL Server , Informix , and DB2 ).
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Modifying the “Path to executable” of a windows service
...hanges. Many paths require quoted strings, which you can enter as follows, for example with MS SQL Server: sc config mssqlserver binPath= "\"F:\SQL DATA\MSSQL10.MSSQLSERVER\MSSQL\Binn\sqlservr.exe\" -sMSSQLSERVER"
– Marc Durdin
Nov 19 '14 at 23:30
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List all base classes in a hierarchy of given class?
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inspect.getmro(cls) works for both new and old style classes and returns the same as NewClass.mro(): a list of the class and all its ancestor classes, in the order used for method resolution.
>>> class A(object):
>>> pass
>&g...
onCreateOptionsMenu inside Fragments
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onCreateOptionsMenu() for fragments has different arguments than for Activities.
– Jorge
Dec 23 '13 at 13:34
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How to create a date object from string in javascript [duplicate]
...ed from 0.
Also you may use Date.parse method, but it uses different date format:
var d = Date.parse("11/30/2011");
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Docker: adding a file from a parent directory
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Unfortunately, (for practical and security reasons I guess), if you want to add/copy local content, it must be located under the same root path than the Dockerfile.
From the documentation:
The <src> path must be ins...
Can I call memcpy() and memmove() with “number of bytes” set to zero?
... Where an argument declared as size_t n specifies the length of the array for a
function, n can have the value zero on a call to that function. Unless explicitly stated
otherwise in the description of a particular function in this subclause, pointer arguments
on such a call shall still have v...
Using logging in multiple modules
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# your program code
if __name__ == '__main__':
main()
See here for logging from multiple modules, and here for logging configuration for code which will be used as a library module by other code.
Update: When calling fileConfig(), you may want to specify disable_existing_loggers=False i...
Finding the source code for built-in Python functions?
..., see the section Retrieving Source Code in the documentation of inspect.
For built-in classes and methods this is not so straightforward since inspect.getfile and inspect.getsource will return a type error stating that the object is built-in. However, many of the built-in types can be found in the...
“static const” vs “#define” vs “enum”
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It depends on what you need the value for. You (and everyone else so far) omitted the third alternative:
static const int var = 5;
#define var 5
enum { var = 5 };
Ignoring issues about the choice of name, then:
If you need to pass a pointer around, you mus...