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PostgreSQL error: Fatal: role “username” does not exist
...m user of the same name (h9uest in your case):
sudo -u postgres -i
As recommended here or here.
Then try again. Type exit when done with operating as system user postgres.
Or execute the single command createuser as postgres with sudo, like demonstrated by drees in another answer.
The point is...
Java compiler level does not match the version of the installed Java project facet
...se, you'll need to specify the source and target versions as 1.6 for maven-compiler-plugin. m2e uses these values to determine the project's Java compiler level. A snippet of the POM is shown below:
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin<...
Convert a list to a data frame
... type. Passing through a matrix means that all data will be coerced into a common type. I.e. if you have one column of character data and one column of numeric data the numeric data will be coerced to string by matrix() and then both to factor by data.frame().
– Ian Sudbery
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Maximum request length exceeded.
... max length while requestLimits configures IIS's max length, stackoverflow.com/questions/6327452/… and forums.iis.net/t/1169846.aspx
– Despertar
Aug 6 '12 at 8:21
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How to stop a program running under Eclipse?
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jQuery Get Selected Option From Dropdown
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Git: How to update/checkout a single file from remote origin master?
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Super handy, this worked great. I needed to get a composer.json file and run an update before I updated the rest of the site in production. If I had manually put the composer.json/lock files in place, when I did a pull, it would conflict saying the files already existed. B...
Find the version of an installed npm package
... If you can't remember list, npm ls also works. In fact, many npm commands have aliases, and moreover, if you type a substring of a command, if this substring is unambiguous, it will work also; for instance npm ls, npm list, npm lis are all the same. If you want more verbose output, try npm...
Batch files: How to read a file?
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You can use the for command:
FOR /F "eol=; tokens=2,3* delims=, " %i in (myfile.txt) do @echo %i %j %k
Type
for /?
at the command prompt. Also, you can parse ini files!
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Is null check needed before calling instanceof?
...f x is null.
From the Java Language Specification, section 15.20.2, "Type comparison operator instanceof":
"At run time, the result of the
instanceof operator is true if the
value of the RelationalExpression is
not null and the reference could be
cast to the ReferenceType
without rai...