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Add column with number of days between dates in DataFrame pandas
... Nde - how exactly did it not work? Error or wrong values? Did you convert both A and B columns to datetime successfully?
– Ricky McMaster
Sep 24 '18 at 6:56
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convert UIImage to NSData
...mage inside a UIImageView , e.g. "myImageView", you can do the following:
Convert your image using UIImageJPEGRepresentation() or UIImagePNGRepresentation() like this:
NSData *data = UIImagePNGRepresentation(myImageView.image);
//or
NSData *data = UIImageJPEGRepresentation(myImageView.image, 0.8);...
How can I group by date time column without taking time into consideration
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Cast/Convert the values to a Date type for your group by.
GROUP BY CAST(myDateTime AS DATE)
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convert String to DateTime
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DateTime.strptime allows you to specify the format and convert a String to a DateTime.
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LINQ: Select an object and change some properties without creating a new object
... I am getting "A lambda expression with a statement body cannot be converted to an expression tree" error. Its not for LINQ to SQL, any advice?
– surya
Feb 15 '12 at 16:22
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Convert Unix timestamp into human readable date using MySQL
Is there a MySQL function which can be used to convert a Unix timestamp into a human readable date? I have one field where I save Unix times and now I want to add another field for human readable dates.
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How to add new elements to an array?
...e.add( ContactsContract.Contacts.IN_VISIBLE_GROUP+"=1" );
If you need to convert it to a simple array...
String[] simpleArray = new String[ where.size() ];
where.toArray( simpleArray );
But most things you do with an array you can do with this ArrayList, too:
// iterate over the array
for( Str...
How to implement custom JsonConverter in JSON.NET to deserialize a List of base class objects?
... given here
http://james.newtonking.com/projects/json/help/CustomCreationConverter.html
9 Answers
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sed one-liner to convert all uppercase to lowercase?
...ile in which some words are printed in ALL CAPS. I want to be able to just convert everything in the textfile to lowercase, using sed . That means that the first sentence would then read, 'i have a textfile in which some words are printed in all caps.'
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Convert SVG image to PNG with PHP
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When converting SVG to transparent PNG, don't forget to put this BEFORE $imagick->readImageBlob():
$imagick->setBackgroundColor(new ImagickPixel('transparent'));
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