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Difference between dispatch_async and dispatch_sync on serial queue?
...sync(_serialQueue, ^{ printf("3"); });
printf("4");
It may print 2413 or 2143 or 1234 but 1 always before 3
for this code
dispatch_sync(_serialQueue, ^{ printf("1"); });
printf("2");
dispatch_sync(_serialQueue, ^{ printf("3"); });
printf("4");
it always print 1234
Note: For first code, it w...
Make column not nullable in a Laravel migration
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edited Jul 17 '17 at 21:29
Script_Coded
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answered Dec 24 '12 a...
What is the easiest way to push an element to the beginning of the array?
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Ed S.Ed S.
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@Html.BeginForm Displaying “System.Web.Mvc.Html.MvcForm” on Page
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marcindmarcind
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How do I get SUM function in MySQL to return '0' if no values are found?
... as table_name,
'mixed null/non-null' as description,
21 as expected_sum,
COALESCE(SUM(val), 0) as actual_sum
FROM foo
UNION ALL
SELECT 'bar' as table_name,
'all non-null' as description,
21 ...
Rails: How to list database tables/objects using the Rails console?
...lumns
– Stephen Provis
Jun 8 '15 at 21:02
4
Also in Rails 4, you can just use ModelName to get a ...
What's the difference between io.sockets.emit and broadcast?
...here.
– Avi Cherry
Jun 24 '15 at 22:21
@Sobiaholic I still haven't encountered the obvious reason for not emitting the...
A simple command line to download a remote maven2 artifact to the local repository?
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answered Nov 21 '09 at 21:14
Pascal ThiventPascal Thivent
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MySQL Select Date Equal to Today
...erjio's solution.
– RandomSeed
Oct 21 '15 at 8:01
or if to find on a particular date, with the index also being utili...
Deprecated ManagedQuery() issue
...i.getPath()));.
– Femi
Oct 3 '12 at 21:29
1
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