大约有 33,000 项符合查询结果（耗时：0.0475秒） [XML]
What good technology podcasts are out there?
...t
Ajaxian Podcast
Pragmatic Podcasts
Channel 9 Audio Feed
EDIT: Missed one:
Elegant Code Cast
share
edited Aug 14 '08 at 12:17
...
How to return an empty ActiveRecord relation?
...
There is a now a "correct" mechanism in Rails 4:
>> Model.none
=> #<ActiveRecord::Relation []>
share
|
improve this answer
|
follow
...
SQL keys, MUL vs PRI vs UNI
...mitted within the column.
There is also a final caveat:
If more than one of the Key values applies to a given column of a table, Key displays the one with the highest priority, in the order PRI, UNI, MUL.
As a general note, the MySQL documentation is quite good. When in doubt, check it out!
...
What is the difference between aggregation, composition and dependency? [duplicate]
...
The Tires can be taken off of the Car object and installed on a different one. Also, if the car gets totaled, the tires do not necessarily have to be destroyed.
Composition
Body -> Blood Cell
When the Body object is destroyed the BloodCells get destroyed with it.
Dependency
A relationsh...
Run all SQL files in a directory
...ant the .SQL files to be executed, double click the .BAT file and you are done!
share
|
improve this answer
|
follow
|
...
Real life example, when to use OUTER / CROSS APPLY in SQL
...n alias
SELECT number,
doubled_number,
doubled_number_plus_one
FROM master..spt_values
CROSS APPLY (SELECT 2 * CAST(number AS BIGINT)) CA1(doubled_number)
CROSS APPLY (SELECT doubled_number + 1) CA2(doubled_number_plus_one)
4) Unpivoting more than one group of columns
Assumes ...
What exactly are iterator, iterable, and iteration?
...
Iteration is a general term for taking each item of something, one after another. Any time you use a loop, explicit or implicit, to go over a group of items, that is iteration.
In Python, iterable and iterator have specific meanings.
An iterable is an object that has an __iter__ method...
Difference between LoadFile and LoadFrom with .NET Assemblies?
... between using LoadFile and LoadFrom when loading an assembly. Can someone provide an example or an analogy to better describe it. The MSDN documentation confused me more. Also, Is ReflectionOnlyLoadFrom the same as LoadFrom except that it loads the assembly only in reflection mode.
...
Set selected item of spinner programmatically
...Adapter() seem to display the 1st item always (Android 2.3), even the good one is selected in the dropView. adding view.post() (@Marco Hernaiz Cao answer) fix it for me.
– Christ
Jun 20 '14 at 10:14
...
How does the algorithm to color the song list in iTunes 11 work? [closed]
...ing the colors for the fonts and background in function of album cover. Anyone figured out how the algorithm works?
7 Answe...