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What is /dev/null 2>&1?
... I usually just use > for that reason.)
2>&1 redirects standard error (2) to standard output (1), which then discards it as well since standard output has already been redirected.
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How to avoid annoying error “declared and not used”
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That error is here to force you to write better code, and be sure to use everything you declare or import. It makes it easier to read code written by other people (you are always sure that all declared variables will be used), and...
Is it possible to stop JavaScript execution? [duplicate]
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Short answer:
throw new Error("Something went badly wrong!");
If you want to know more, keep reading.
Do you want to stop JavaScript's execution for developing/debugging?
The expression debugger; in your code, will halt the page execution, and...
TypeError: $.ajax(…) is not a function?
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Not sure, but it looks like you have a syntax error in your code. Try:
$.ajax({
type: 'POST',
url: url,
data: postedData,
dataType: 'json',
success: callback
});
You had extra brackets next to $.ajax which were not needed. If you still get the error, then th...
How can I create an error 404 in PHP?
...esponse_code(404);
include('my_404.php'); // provide your own HTML for the error page
die();
die() is not strictly necessary, but it makes sure that you don't continue the normal execution.
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Android Studio marks R in red with error message “cannot resolve symbol R”, but build succeeds
...ed to create in Android Studio, all usages of R are marked in red with the error message "cannot resolve symbol R", but the compilation succeeds and the application runs. This is really annoying, as it blocks auto-completion and shows huge red waved lines all over my code.
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Official reasons for “Software caused connection abort: socket write error”
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This error can occur when the local network system aborts a
connection, such as when WinSock closes an established connection
after data retransmission fails (receiver never acknowledges data sent
on a datastream socket).
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SELECT INTO Variable in MySQL DECLARE causes syntax error?
...ver, if you put that same query in MySql Workbench, it will throw a syntax error. I don't know why they would be different, but they are. To work around the problem in MySql Workbench, you can rewrite the query like this:
SELECT @myvar:=myvalue
FROM mytable
WHERE anothervalue = 1;
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How should I handle “No internet connection” with Retrofit on Android
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Since retrofit 1.8.0 this has been deprecated
retrofitError.isNetworkError()
you have to use
if (retrofitError.getKind() == RetrofitError.Kind.NETWORK)
{
}
there are multiple types of errors you can handle:
NETWORK An IOException occurred while communicating to the serve...
VS 2010 Test Runner error “The agent process was stopped while the test was running.”
...iple tests at one time using test lists, I sometimes reveive the following error for one or more of the tests:
19 Answers
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