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Exit a Script On Error
...$jar_file. Please recheck the variables 1>&2
exit 1 # terminate and indicate error
fi
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Lists in ConfigParser
...here is nothing stopping you from packing the list into a delimited string and then unpacking it once you get the string from the config. If you did it this way your config section would look like:
[Section 3]
barList=item1,item2
It's not pretty but it's functional for most simple lists.
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Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
... on a program that issues DDL. I would like to know whether CREATE TABLE and similar DDL can be rolled back in
5 Answers
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iterating over and removing from a map [duplicate]
... set is backed by the map, so changes to the map are reflected in the set, and vice-versa
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Insert into … values ( SELECT … FROM … )
... the SQL engine of the day ( MySQL , Oracle , SQL Server , Informix , and DB2 ).
26 Answers
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Unable to Cast from Parent Class to Child Class
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A simple way to downcast in C# is to serialize the parent and then deserialize it into the child.
var serializedParent = JsonConvert.SerializeObject(parentInstance);
Child c = JsonConvert.DeserializeObject<Child>(serializedParent);
I have a simple console app that casts...
Maximum concurrent Socket.IO connections
This question has been asked previously but not recently and not with a clear answer.
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Putting a simple if-then-else statement on one line [duplicate]
I'm just getting into Python and I really like the terseness of the syntax. However, is there an easier way of writing an if - then - else statement so it fits on one line?
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How can I clear the SQL Server query cache?
... is conducted in SQL Server the best approach may be to issue a CHECKPOINT and then issue the DBCC DROPCLEANBUFFERS command. Although the CHECKPOINT process is an automatic internal system process in SQL Server and occurs on a regular basis, it is important to issue this command to write all of the...
Why use argparse rather than optparse?
I noticed that the Python 2.7 documentation includes yet another command-line parsing module. In addition to getopt and optparse we now have argparse .
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