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How to check whether an array is empty using PHP?
... if the variable might not have been set AND you don't wont to trigger an E_NOTICE; IMO this is generally a bad idea.
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how to show lines in common (reverse diff)?
...u could also try with perl (credit goes here)
perl -ne 'print if ($seen{$_} .= @ARGV) =~ /10$/' file1 file2
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What's the point of JAXB 2's ObjectFactory classes?
...e(XhtmlStyleType value) {
return new JAXBElement<XhtmlStyleType>(_XhtmlHeadTypeStyle_QNAME, XhtmlStyleType.class, XhtmlHeadType.class, value);
}
This is how you get a <style> tag into a <head> tag:
ObjectFactory factory = new ObjectFactory();
XhtmlHtmlType html = factory.cre...
Cron and virtualenv
...e /path/to/virtualenv/bin/activate && /path/to/build/manage.py some_command > /dev/null
It's tricky to spot why this fails as /var/log/syslog doesn't log the error details. Best to alias yourself to root so you get emailed with any cron errors. Simply add yourself to /etc/aliases and ...
Loading local JSON file
...e full example : I am getting error : has not been loaded yet for context: _. Use require([])
– shaijut
Dec 26 '18 at 9:22
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psql: FATAL: database “” does not exist
...t;user> when my goal is to create another DB: psql -U Username -f create_db.sql this will return error: database Username doesn't exists
– Kostanos
Oct 4 '17 at 16:21
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Generate a random double in a range
...y correct, but beware of its limits. If you do double rangeMax= Double.MAX_VALUE; and double rangeMin= -rangeMax; you will always get an infinite value in return. You might want to check for Double.valueOf(rangeMax-rangeMin).isInfinite().
– lre
Apr 7 '14 at 1...
Real-world examples of recursion [closed]
... }
else{
System.out.println("\n" + indentation + "|_" +currentDirOrFile.getName());
indentation.append(" ");
for ( String currentFileOrDirName : currentDirOrFile.list()){
getPrivateDirectoryContent(currentDirOrFile + "\\" + currentFi...
How to convert JSON to a Ruby hash
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You could also use Rails' with_indifferent_access method so you could access the body with either symbols or strings.
value = '{"val":"test","val1":"test1","val2":"test2"}'
json = JSON.parse(value).with_indifferent_access
then
json[:val] #=> "tes...
install / uninstall APKs programmatically (PackageManager vs Intents)
...dManifest.xml
<uses-permission android:name="android.permission.REQUEST_DELETE_PACKAGES" />
Then:
Intent intent = new Intent(Intent.ACTION_DELETE);
intent.setData(Uri.parse("package:com.example.mypackage"));
startActivity(intent);
to uninstall. Seems easier...
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