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What are static factory methods?
...d providing direct access to database connections because they're resource intensive. So we use a static factory method getDbConnection that creates a connection if we're below the limit. Otherwise, it tries to provide a "spare" connection, failing with an exception if there are none.
public class...
SELECT DISTINCT on one column
...ow has all shown), this is the correct query:
declare @TestData table (ID int, sku char(6), product varchar(15))
insert into @TestData values (1 , 'FOO-23' ,'Orange')
insert into @TestData values (2 , 'BAR-23' ,'Orange')
insert into @TestData values (3 , 'FOO-24' ,'Apple')
insert ...
Stateless and Stateful Enterprise Java Beans
...ually should show that user1 has 1 and user2 has 1 ( if thats what you are intending to do. Shopping cart example as above).
– Krishna
Aug 19 '13 at 16:48
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Error 'LINK : fatal error LNK1123: failure during conversion to COFF: file invalid or corrupt' after
... If that's the first one in your path, and the linker decides it needs to convert a .res file to COFF object format, the link will fail with LNK1123.
(Really annoying that the error message has nothing to do with the actual problem, but that's not unusual for a Microsoft product.)
Just delete/ren...
Calling startActivity() from outside of an Activity?
I'm using an AlarmManager to trigger an intent that broadcasts a signal. The following is my code:
9 Answers
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How to implement a Map with multiple keys? [duplicate]
... One Map<K1, V> and one Map<K2, V>. If you must have a single interface, write a wrapper class that implements said methods.
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Fragment Inside Fragment
...MainActivity extends AppCompatActivity implements ParentFragment.OnFragmentInteractionListener, ChildFragment.OnFragmentInteractionListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_m...
Are static variables shared between threads?
...by another thread, as the JIT is quite within its rights to foist the read into a register and then you'll never see any update. Any eventual load is luck and should not be relied on.
– Jed Wesley-Smith
Feb 8 '11 at 22:24
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Case insensitive string compare in LINQ-to-SQL
...es. If you upcase both the data and the query in your search, then you're converting all the text you're searching over for every query, which isn't performant.
– Andrew Arnott
May 15 '09 at 5:17
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List of tuples to dictionary
Here's how I'm currently converting a list of tuples to dictionary in Python:
4 Answers
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