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What are all the differences between src and data-src attributes?
... a functional meaning.
The data-src attribute is just one of the infinite set of data-* attributes, which have no defined meaning but can be used to include invisible data in an element, for use in scripting (or styling).
s...
How to remove constraints from my MySQL table?
...you can temporarily disable all foreign key checks from a mysql database:
SET FOREIGN_KEY_CHECKS=0;
And to enable it again:
SET FOREIGN_KEY_CHECKS=1;
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Django select only rows with duplicate field values
...you can get with Django. The problem is that this will return a ValuesQuerySet with only name and count. However, you can then use this to construct a regular QuerySet by feeding it back into another query:
dupes = Literal.objects.values('name')
.annotate(Count('id'))
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How do I vertically center UITextField Text?
...er it vertically. How can I center it vertically, or is there some default setting that I am missing?
4 Answers
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How do you save/store objects in SharedPreferences on Android?
...Preferences(MODE_PRIVATE);
To save:
MyObject myObject = new MyObject;
//set variables of 'myObject', etc.
Editor prefsEditor = mPrefs.edit();
Gson gson = new Gson();
String json = gson.toJson(myObject);
prefsEditor.putString("MyObject", json);
prefsEditor.commit();
To retrieve:
Gson gson = ne...
IE7 does not understand display: inline-block
...here to trigger hasLayout behaviour, and we use the star property hack for setting the display to inline only in IE7 and lower (newer browsers won't apply that). hasLayout and inline together will basically trigger inline-block behaviour in IE7, so we are happy.
This CSS will not validate, and can ...
Can you autoplay HTML5 videos on the iPad?
...e or iPod touch once playback in
initiated, but for iPad you must either set the controls attribute or
provide a controller using JavaScript.
What this means (in terms of code) is that Javascript's play() and load() methods are inactive until the user initiates playback, unless the play() or...
What to add for the update portion in ConcurrentDictionary AddOrUpdate
...
I.e. the Func always returns the sessionId, so that both Add and Update set the same value.
BTW: there is a sample on the MSDN page.
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Select multiple columns in data.table by their numeric indices
...e the same as they do in the with data.frames without having to explicitly set with=FALSE. It's terrific! See here for the particular commit, including the NEWS entry describing the change.
– Josh O'Brien
Oct 18 '16 at 15:41
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What is the difference between setUp() and setUpClass() in Python unittest?
What is the difference between setUp() and setUpClass() in the Python unittest framework? Why would setup be handled in one method over the other?
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