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Require either of two arguments using argparse
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I think you are searching for something like mutual exclusion (at least for the second part of your question).
This way, only foo or bar will be accepted, not both.
import argparse
parser = argparse.ArgumentParser()
group = parser.add_mutually_exclusive_group(required=True)
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Change auto increment starting number?
...d to be aware that this will cause the rebuilding of your entire table, at least with InnoDB and certain MySQL versions. If you have an already existing dataset with millions of rows, it could take a very long time to complete.
In my experience, it's better to do the following:
BEGIN WORK;
-- You ...
Jackson JSON custom serialization for certain fields
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Jackson-databind (at least 2.1.3) already contains special ToStringSerializer, see my answer.
– werupokz
Feb 14 '13 at 11:26
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Distributed sequence number generation?
...he most significant 32 bits: Timestamp, the generation time of the ID.
The least significant 32 bits: 32-bits of randomness, generated anew for each ID.
d) The easy way out, use UUIDs / GUIDs.
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One-liner to check whether an iterator yields at least one element?
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This works for the case of "at least x" sum(1 for _ in itertools.islice(iterator, max_len)) >= max_len
– Dave Butler
Jan 7 '14 at 19:24
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MYSQL OR vs IN performance
... IN's being converted to OR's is how SQLServer handles it (or at least it did - might have changed now, haven't used it in years). I've been unable to find any evidence that MySQL does this.
– RichardAtHome
Aug 29 '14 at 9:56
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Is there a `pointer-events:hoverOnly` or similar in CSS?
...es 'work' - however it doesn't allow click through to an element below (at least not when that element is a YouTube video) - which is probably the only reason anybody would need that behavior in the first place
– Simon_Weaver
Jun 27 '16 at 20:39
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List the queries running on SQL Server
... In 2K5 Management Studio you also get Activity Monitor.
And last but not least there are community contributed scripts like the Who Is Active by Adam Machanic.
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How to Execute SQL Server Stored Procedure in SQL Developer?
...- EXEC proc_name and see if it asks you for the second parameter...then at least you know your sytax is right..if doesnt work means you probanly dont have right stored proc name...try full qualified name..
– Vishal
Nov 9 '10 at 18:14
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Starting iPhone app development in Linux? [closed]
...ng the application to Apple. Using the alternative tool chain opens up (at least on the Mac) the possibility of using other IDEs other than XCode for developing the application and again resorting to XCode for the deployment and testing with the simulator.
Of course if you do get the code signing ...