Calling awk with user-defined options [closed] - awk

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How can I use user-defined options in awk that calls a specific function? Will the code be called for every line when processing starts?

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SQL ( How do I use the CONCAT function) [closed]

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How do I use the CONCAT function on SQL.
That is pretty straightforward
SELECT CONCAT('hey', 'ho');

Google OR example for column generation [closed]

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Are there any examples of the code for the Column generation problem (cutting stock problem or any other problem) using google OR tools in C++?
Yes, as the name suggests, this does the job:
https://github.com/google/or-tools/blob/stable/examples/cpp/strawberry_fields_with_column_generation.cc

Will leveldb method put update a value? [closed]

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Will the method put update a value or is it necessary to first delete it and then put the new one?
Yes, it will update value (delete is not required). Do you have any problem with it?

Binary search works best with which data structure? [closed]

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Binary search works best with which data structure?
One that is sorted and allows random access.

Public Sub vs Sub? [closed]

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Ok so I would like to know the difference with Public Subs and just normal Subs. Can normal subs be accessed by another program.
It's not whether they can be accessed by other programs, but whether they can be accessed from other types (Classes/Modules) within the same program.