大约有 30,000 项符合查询结果（耗时：0.0212秒） [XML]
How to Store Historical Data
...ramework that utilizes XML for storing application data.
We use something called a Master - Detail model that at it's simplest consists of:
Master Table for example calledWidgets often just containing an ID. Will often contain data that won't change over time / isn't historical.
Detail / History ...
What is the difference between a stored procedure and a view?
...tion FROM vw_user_profile WHERE user_id = @ID
END
GO
So, later on, I can call:
dbo.getDesc 25
and I will get the description for user_id 25, where the 25 is your parameter.
There is obviously a lot more detail, this is just the basic idea.
...
Convert Django Model object to dict with all of the fields intact
...ct(instance)]
return data
While this is the most complicated option, calling to_dict(instance) gives us exactly the desired result:
{'auto_now_add': datetime.datetime(2018, 12, 20, 21, 34, 29, 494827, tzinfo=<UTC>),
'foreign_key': 2,
'id': 1,
'many_to_many': [2],
'normal_value': 1,
...
Django select only rows with duplicate field values
...
if you add another call to values('name') after your call to annotate, you can remove the list comprehension and say Literal.objects.filter(name__in=dupes) which will allow this to all be executed in a single query.
– Pipe...
What is the intent of the methods getItem and getItemId in the Android class BaseAdapter?
...my adapter object via something like myListData.get(position) i can simply call the adapter like adapter.get(position).
The same goes for getItemId. Usually I would use this method when I want to execute some task based on the unique ID of an object in the list. This is especially useful when worki...
How do I fetch a single model in Backbone?
...ecause model.id is essentially synonymous with model.attributes.id. If you call model.set('id'), Backbone sets model.id to whatever you specified. And model.id is what gets used when creating the model-specific URL.
– Lambart
Apr 27 '15 at 21:25
...
Android add placeholder text to EditText
...
Thanks! I didn't know what they call it in android, I just know that on iOS it's called placeholder.
– Mona
Nov 22 '11 at 4:24
40
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How to access app.config in a blueprint?
... = config.get('CLIENT_SECRET')
scope = config.get('SCOPE')
callback = config.get('CALLBACK')
auth = OauthAdapter(client_id, client_secret, scope, callback)
super(RegisteringExampleBlueprint,
self).register(app, options, first_registration)
the_bluepri...
How to remove item from list in C#?
...st element in the example). Important is that the list will shrink automatically, so it has only 2 elements left - and hence the largest allowed index after executing RemoveAll in this example is 1 (which is results.Count() - 1).
Some Trivia: You can use this knowledge and create a local function
vo...
Difference between ActionBarSherlock and ActionBar Compatibility
... Google released a new backward-compatible Action Bar implementation called ActionBarCompat that's part of the Support Library r18. The ActionBarCompat APIs let you build the essential Action Bar design pattern into your app, with broad compatibility back to Android 2.1.
–...