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Postgresql: Scripting psql execution with password
...a wildcard for your port/database fields.
You must chmod 0600 ~/.pgpass in order for it to not be silently ignored by psql.
Create an alias in your bash profile that runs your psql command for you. For example:alias postygresy='psql --host hostname database_name -U username' The values should match ...
Unique constraint on multiple columns
...
By using the constraint definition on table creation, you can specify one or multiple constraints that span multiple columns. The syntax, simplified from technet's documentation, is in the form of:
CONSTRAINT constraint_name...
Check image width and height before upload with Javascript
...orted in a few browsers. Mostly firefox and chrome, could be opera as well by now.
P.S. The URL.createObjectURL() method has been removed from the MediaStream interface. This method has been deprecated in 2013 and superseded by assigning streams to HTMLMediaElement.srcObject. The old method was rem...
How do I use LINQ Contains(string[]) instead of Contains(string)
...tion is "leaky", you sometimes need to know which variant you are using in order to construct the query properly. As written this would work for LINQ to objects (and may be LINQ to SQL). For EF, you'd do it the other way around and construct the collection in memory as List<int> instead and s...
How do I prevent 'git diff' from using a pager?
..., 'less').
The value is meant to be interpreted by the shell.
The order of preference is:
the $GIT_PAGER environment variable,
then core.pager configuration,
then $PAGER,
and then the default chosen at compile time (usually 'less').
When the LESS environment variabl...
XmlSerializer giving FileNotFoundException at constructor
...ms code generation nor does it perform compilation with the C# compiler in order to create a serializer assembly at runtime, unless explicitly forced to by setting a configuration file setting (useLegacySerializerGeneration). This change removes the dependency on csc.exe and improves startup perform...
How to validate IP address in Python? [duplicate]
...ings like "4" and "192.168" and silently pads the rest with zeros. Technically valid, I'm sure, but not quite what I expected.
– krupan
Nov 25 '08 at 23:58
6
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Showing data values on stacked bar chart in ggplot2
...that "position_stack() and position_fill() now stack values in the reverse order of the grouping, which makes the default stack order match the legend."
Answer valid for older versions of ggplot:
Here is one approach, which calculates the midpoints of the bars.
library(ggplot2)
library(plyr)
#...
Embedded MongoDB when running integration tests
...ed mongo for each test fails most of the tests. Its better to start before all the tests and shutdown once all have executed
– DBS
Apr 30 '19 at 5:36
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How do you run a crontab in Cygwin on Windows?
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You need to also install cygrunsrv so you can set cron up as a windows service, then run cron-config.
If you want the cron jobs to send email of any output you'll also need to install either exim or ssmtp (before running cron-config.)
See /usr/...