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How does comparison operator works with null int?
...g to MSDN - it's down the page in the "Operators" section:
When you perform comparisons with nullable types, if the value of one of the nullable types is null and the other is not, all comparisons evaluate to false except for !=
So both a > b and a < b evaluate to false since a is null.....
How to see the CREATE VIEW code for a view in PostgreSQL?
...eturn here to look up pg_get_viewdef (how to remember that!!), so searched for a more memorable command... and got it:
\d+ viewname
You can see similar sorts of commands by typing \? at the pgsql command line.
Bonus tip: The emacs command sql-postgres makes pgsql a lot more pleasant (edit, copy,...
What is the difference between object keys with quotes and without quotes?
...ot a valid JavaScript identifier).
As a side note, the JSON data exchange format does require double quotes around identifiers (and does not allow single quotes).
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Copying files using rsync from remote server to local machine
...path/to/copy user@host.remoted.from:/path/to/local/storage
See man rsync for an explanation of my usual switches.
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Why should I use Restify?
I had the requirement to build up a REST API in node.js and was looking for a more light-weight framework than express.js which probably avoids the unwanted features and would act like a custom-built framework for building REST APIs. Restify from its intro is recommended for the same case.
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How to run JUnit tests with Gradle?
...ources directory, whereas srcDir "test/model" adds another directory. Same for the main source set.
– Peter Niederwieser
Dec 20 '13 at 16:04
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How to specify a multi-line shell variable?
...code of 1 in this situation; if that matters (you are running with set -e, for example), you'll want add a || true at the end of the first line.
– chepner
Mar 15 '13 at 12:53
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What is App.config in C#.NET? How to use it?
...n of the connection string is hard coded in my coding, there is no problem for installing it in my system, but for other systems there is.
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Thread Safety in Python's dictionary
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Python's built-in structures are thread-safe for single operations, but it can sometimes be hard to see where a statement really becomes multiple operations.
Your code should be safe. Keep in mind: a lock here will add almost no overhead, and will give you peace of mi...
How can I use vim to convert my file to utf8?
...ou are editing a file encoded as latin1, you will find that 'fileencoding' for that buffer is set to latin1. So you will need to manually set the fileencoding before saving the file.
:set fileencoding=utf8
:w myfilename
Also note that UTF8 files often begin with a Byte Order Mark (BOM) which ind...