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Using semicolon (;) vs plus (+) with exec in find
Why is there a difference in output between using
6 Answers
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typecast string to integer - Postgres
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Wild guess: If your value is an empty string, you can use NULLIF to replace it for a NULL:
SELECT
NULLIF(your_value, '')::int
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How do I list one filename per output line in Linux?
...1. GNU coreutils (installed on standard Linux systems) and Solaris do; but if in doubt, use man ls or ls --help or check the documentation. E.g.:
$ man ls
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-1 list one file per line. Avoid '\n' with -q or -b
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Private vs Public in Cache-Control
Can you please describe an example indicating difference between Public and Private Cache-Control in asp.net applications hosted in IIS.
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How do I get rid of “[some event] never used” compiler warnings in Visual Studio?
...picious...
There's also an interesting article about this warning and specifically how it applies to interfaces; there's a good suggestion on how to deal with "unused" events. The important parts are:
The right answer is to be explicit about what you expect from the event, which in this case, i...
sed command with -i option failing on Mac, but works on Linux
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If you use the -i option you need to provide an extension for your backups.
If you have:
File1.txt
File2.cfg
The command (note the lack of space between -i and '' and the -e to make it work on new versions of Mac and on G...
What's an Aggregate Root?
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Hypothetically, if the client code needed the LineItem for some other purpose, would that form a seperate aggregate (assuming there would be other objects involved not related to the Order object)?
– Ahmad
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Serialize an object to XML
...or behavior for XmlWriter to dispose your StringWriter. As a general rule, if you declare something that needs disposing you're responsible for disposing of it. And implicit to that rule, anything you don't declare yourself you shouldn't dispose. So both usings are necessary.
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orderBy multiple fields in Angular
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If you wants to sort on mulitple fields inside controller use this
$filter('orderBy')($scope.property_list, ['firstProp', 'secondProp']);
See also https://docs.angularjs.org/api/ng/filter/orderBy
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What exactly does stringstream do?
...complicated but it is quite complex. You create stringstream object ss, modify its flags, put a number into it with operator<<, and extract it via str(). I guess that operator>> could be used.
Also in this example the string buffer is hidden and not used explicitly. But it would be too ...