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How would one write object-oriented code in C? [closed]
... (commTcp.open)(commTcp, "bigiron.box.com:5000");
Sort of like a manual vtable.
You could even have virtual classes by setting the pointers to NULL -the behaviour would be slightly different to C++ (a core dump at run-time rather than an error at compile time).
Here's a piece of sample code that...
Python's equivalent of && (logical-and) in an if-statement
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@Buge it looks like "or" is higher up in the table that you linked
– Matt
Dec 4 '17 at 14:59
5
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Best way to clear a PHP array's values
...hing more powerful use unset since it also will clear $foo from the symbol table, if you need the array later on just instantiate it again.
unset($foo); // $foo is gone
$foo = array(); // $foo is here again
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Using OR in SQLAlchemy
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This has been really helpful.
Here is my implementation for any given table:
def sql_replace(self, tableobject, dictargs):
#missing check of table object is valid
primarykeys = [key.name for key in inspect(tableobject).primary_key]
filterargs = []
for primkeys in primarykeys:...
How to check if running in Cygwin, Mac or Linux?
...If you are doing that, it's your responsibility to ensure the correct executables (i.e., the CygWin ones) are being called, possibly by modifying the path beforehand or fully specifying the executable locations (e.g., /c/cygwin/bin/uname).
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T-SQL - function with default parameters
...- with parameters, with DEFAULT and via EXECUTE
SET NOCOUNT ON;
DECLARE
@Table SYSNAME = 'YourTable',
@Schema SYSNAME = 'dbo',
@Rows INT;
SELECT dbo.TableRowCount( @Table, @Schema )
SELECT dbo.TableRowCount( @Table, DEFAULT )
EXECUTE @Rows = dbo.TableRowCount @Table
SELECT @Rows
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How to rename items in values() in Django?
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-1 because .values(supports__through_tables) and this hack doesn't (incidentally probably the most obvious use case for wanting to rename the ValuesQuerySet dict keys)
– wim
Aug 21 '14 at 13:12
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How do I specify a password to 'psql' non-interactively?
...)" --rm postgres psql -h www.example.com dbname username -c 'SELECT * FROM table;'
– Bilal Akil
Nov 23 '17 at 4:34
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How to get last N records with activerecord?
...rails is lazy, it will eventually hit the database with SQL like: "SELECT table.* FROM table ORDER BY table.id DESC LIMIT 5".
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Multiple INSERT statements vs. single INSERT with multiple VALUES
...irely of duplicate rows and neither affects the order of the output of the table of the constants (and as you are inserting into a heap time spent sorting would be pointless anyway even if it did).
Moreover if a clustered index is added to the table the plan still shows an explicit sort step so it...