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What is the difference between public, protected, package-private and private in Java?
...unately, this answer is a gross oversimplification. Reality is a bit more complicated, especially when you consider protected (which is actually quite a difficult access modifier to fully understand - most people who think they know what protected means really don't). Also, as Bohemian pointed out...
Simple conversion between java.util.Date and XMLGregorianCalendar
...repared for date and calendar
<jaxb:bindings version="2.1" xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<jaxb:globalBindings generateElementProperty="false">
<jaxb:serializable uid="1" />...
How can I select rows with most recent timestamp for each key value?
...rows, where right.id is null. Voila, you got the latest entry per sensor.
http://sqlfiddle.com/#!9/45147/37
SELECT L.* FROM sensorTable L
LEFT JOIN sensorTable R ON
L.sensorID = R.sensorID AND
L.timestamp < R.timestamp
WHERE isnull (R.sensorID)
But please note, that this will be very resource...
How do I make an asynchronous GET request in PHP?
...
file_get_contents will do what you want
$output = file_get_contents('http://www.example.com/');
echo $output;
Edit: One way to fire off a GET request and return immediately.
Quoted from http://petewarden.typepad.com/searchbrowser/2008/06/how-to-post-an.html
function curl_post_async($url, $...
Or versus OrElse
...ays attempt to evaluate both terms. When temp Is DBNull.Value, it can't be compared to zero, so it falls over.
You should use... well, whichever one makes sense.
share
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improve this answer
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How to check if command line tools is installed
... the Terminal, with a nice gui and everything.
$ xcode-select --install
http://macops.ca/installing-command-line-tools-automatically-on-mavericks/
When they were found, this is what the pkgutil command returned:
$ pkgutil --pkg-info=com.apple.pkg.CLTools_Executables
package-id: com.apple.pkg.CL...
How to process SIGTERM signal gracefully?
... Thanks for the idea! I used a modified approach in reboot-guard. github.com/ryran/reboot-guard/blob/master/rguard#L284:L304
– rsaw
Sep 6 '15 at 15:28
7
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How to export collection to CSV in MongoDB?
... are required for csv.
According to this bug in the MongoDB issue tracker https://jira.mongodb.org/browse/SERVER-4224 you MUST provide the fields when exporting to a csv. The docs are not clear on it. That is the reason for the error.
Try this:
mongoexport --host localhost --db dbname --collectio...
Nginx no-www to www and www to no-www
...
HTTP Solution
From the documentation, "the right way is to define a separate server for example.org":
server {
listen 80;
server_name example.com;
return 301 http://www.example.com$request_uri;
}
s...
How to make layout with rounded corners..?
...es:
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#FFFFFF"/>
<stroke android:width="3dp" android:color="#B1BCBE" />
<corners android:radius="10dp"/>
<padding android:le...