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PostgreSQL function for last inserted ID
...);
SELECT currval('persons_id_seq');
The name of the sequence must be known, it's really arbitrary; in this example we assume that the table persons has an id column created with the SERIAL pseudo-type. To avoid relying on this and to feel more clean, you can use instead pg_get_serial_sequence:
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Undefined reference to static constexpr char[]
...in my class. GCC complained and told me I should use constexpr , although now it's telling me it's an undefined reference. If I make the array a non-member then it compiles. What is going on?
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Do I need to disable NSLog before release Application?
...ingWithFormat:(s), ##__VA_ARGS__] )
#else
#define DLog( s, ... )
#endif
Now instead of NSLog use DLog everywhere. When testing and debugging, you'll get debug messages. When you're ready to release a beta or final release, all those DLog lines automatically become empty and nothing gets emitted....
Importing a CSV file into a sqlite3 database table using Python
...n to a file on disk is left as an exercise for the reader ... but there is now a two-liner made possible by the pandas library
df = pandas.read_csv(csvfile)
df.to_sql(table_name, conn, if_exists='append', index=False)
shar...
Why does this CSS margin-top style not work?
...ocks! Just something to add. Your quote of w3c says it but I only realized now. So just to be clear for others you could also give #outer a border.
– driechel
Feb 23 '14 at 22:55
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Switching between GCC and Clang/LLVM using CMake
...
Thanks, I didn't know about this! Although I guess it depends on where cmake is looking for a compiler, right?
– Ibrahim
Dec 4 '12 at 5:55
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Retrieve database or any other file from the Internal Storage using run-as
...
Select your handset and then browse to data/data directory
Now find your application package and go to databases folder. You can see the databases there and upon right click, you will get option
to save this in your drive.
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ASP.NET Web API OperationCanceledException when browser cancels the request
...ellationToken.IsCancellationRequested) check above the call to SendAsync. Now the exceptions no longer show up when the browser quickly cancels requests.
– seangwright
Oct 4 '17 at 18:10
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Javascript infamous Loop issue? [duplicate]
...UNDERSTAND THIS AND YOU ARE HOME AND DRY (took me 2 years)!
// Now the click event is expecting a function as a handler so return it
return function() { alert (num) }
}(i) // We call the function here, passing in i
)
}
SIMPLE TO UNDERSTAND ALTERNATIVE
If you ca...
How does an underscore in front of a variable in a cocoa objective-c class work?
...ttributes have used an underscore _ in front of the variable. Does anyone know what this means? Or how it works?
9 Answers
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