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Django Template Variables and Javascript
...le of template filter:
// myapp/templatetags/js.py
from django.utils.safestring import mark_safe
from django.template import Library
import json
register = Library()
@register.filter(is_safe=True)
def js(obj):
return mark_safe(json.dumps(obj))
This template filters converts variable to ...
Suppress deprecated import warning in Java
...enting an interface with a deprecated method (such as the getUnicodeStream(String columnLabel) in java.sql.ResultSet) then you will not get rid of deprecation warnings just by using the annotation @SuppressWarnings( "deprecation" ), unless you also annotate the same new method with the @Deprecated a...
Calling virtual functions inside constructors
... System.out.println( "Derived: " + x );
}
public static void main( String args[] ) {
Derived d = new Derived( 5 );
}
}
// outputs: Derived 0
// Derived 5
// ... so much for final attributes never changing :P
As you see, calling a polymorphic (virtual in C++ terminology) m...
GitHub: Permission denied (publickey). fatal: The remote end hung up unexpectedly
... this solution seems very close to what has already been posted by learner_19
– Erik
Sep 17 '14 at 7:49
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Run php script as daemon process
... Run the script!
# Note, in this example, if your PHP script returns
# the string "ERROR", the daemon will stop itself.
script
[ $(exec /usr/bin/php -f /path/to/your/script.php) = 'ERROR' ] && ( stop; exit 1; )
end script
Starting & stopping your daemon:
sudo service myphpworker s...
mysql Foreign key constraint is incorrectly formed error
...ISAM engine. It's a silly mistake, which I fixed with:
ALTER TABLE parent_table ENGINE=InnoDB;
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Get current value of a setting in Vim
...
I believe listchars is an ordinary string, not a List, though I guess you could do something like split(&listchars, ',')
– cdyson37
Jul 15 '16 at 6:59
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How to insert a new line in Linux shell script? [duplicate]
...3]
The printf command may accept arguments and needs a format control string similar (but not exactly the same) to the one for the standard C printf(3) function...
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Android: Is it possible to display video thumbnails?
...use since API level 8 (2.2)
public static Bitmap createVideoThumbnail (String filePath, int kind)
Android documentation
The following code runs perfectly:
Bitmap bMap = ThumbnailUtils.createVideoThumbnail(file.getAbsolutePath(), MediaStore.Video.Thumbnails.MICRO_KIND);
...
What is a wrapper class?
...ue = doubleWrapper.intValue();
byte byteValue = doubleWrapper.byteValue();
string stringValue = doubleWrapper.stringValue();
so this is the way , we can use wrapper class type to convert into other primitive types as well. This type of conversion is used when you need to convert a primitive type t...