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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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Insert into … values ( SELECT … FROM … )
... the SQL engine of the day ( MySQL , Oracle , SQL Server , Informix , and DB2 ).
26 Answers
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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 there an easy way to create ordinals in C#?
...he answer, please supply your own, showing us the "proper" way to do this, and why it matters.
– B2K
Apr 6 '17 at 16:05
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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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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.
5 Answers
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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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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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What is the difference between POST and GET? [duplicate]
I've only recently been getting involved with PHP/AJAX/jQuery and it seems to me that an important part of these technologies is that of POST and GET .
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