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Can javax.persistence.Query.getResultList() return null?
And if so, under what circumstances?
7 Answers
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How do you clear a stringstream variable?
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For all the standard library types the member function empty() is a query, not a command, i.e. it means "are you empty?" not "please throw away your contents".
The clear() member function is inherited from ios and is used to clear the err...
Blank space at top of UITextView in iOS 10
...ng was fine with iOS 6 but now with iOS 7 it leaves the blank space on top and then place the text below the middle of the textview.
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Restrict varchar() column to specific values?
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Personally, I'd code it as tinyint and:
Either: change it to text on the client, check constraint between 1 and 4
Or: use a lookup table with a foreign key
Reasons:
It will take on average 8 bytes to store text, 1 byte for tinyint. Over millions of rows,...
Does Qt support virtual pure slots?
...lots in the base class. Second, you're just creating more work for the MOC and compiler since you're adding a (tiny) bit more code. Trivial, but whatever.
So, go for it..
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How to get String Array from arrays.xml file
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Just change the code to:
package com.xtensivearts.episode.seven;
import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
public class Episode7 extends ListActivity {
String[] mTestArray;
/** Called when the activity is first created. */
@Overri...
Expand a div to fill the remaining width
...th floats in a specific way.
Just take that second div, remove the float, and give it overflow:hidden instead. Any overflow value other than visible makes the block it's set on become a BFC. BFCs don't allow descendant floats to escape them, nor do they allow sibling/ancestor floats to intrude in...
Using JQuery - preventing form from submitting
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Two things stand out:
It possible that your form name is not form. Rather refer to
the tag by dropping the #.
Also the e.preventDefault is the correct JQuery syntax, e.g.
//option A
$("form").submit(function(e){
e.prev...
How to display hidden characters by default (ZERO WIDTH SPACE ie. ​)
...... joker - zero width space. I just used some snippets from google groups and didn't recognize that there are doubled characters, because Idea (11) didn't show them, which was causing problems with parsing config file of my app... I discovered it accidentally in vi.
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AttributeError: 'module' object has no attribute 'tests'
I'm running this command:
11 Answers
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