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Waiting until two async blocks are executed before starting another block
..._QUEUE_PRIORITY_HIGH, 0), ^ {
// block1
NSLog(@"Block1");
[NSThread sleepForTimeInterval:5.0];
NSLog(@"Block1 End");
});
dispatch_group_async(group,dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^ {
// block2
NSLog(@"Block2");
[NSThread sleepForTimeInterval...
Difference between $(this) and event.target?
... True enough, thanks for pointing that out. It's always interesting re-reading my old answers...
– nbrooks
May 9 '14 at 20:31
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Why is String immutable in Java?
...ation and concurrency: making String immutable automatically makes them thread safe thereby solving the synchronization issues.
Caching: when compiler optimizes your String objects, it sees that if two objects have same value (a="test", and b="test") and thus you need only one string object (for bo...
Explaining Python's '__enter__' and '__exit__'
...se to user like in with open(abc.txt, 'r') as fin: content = fin.read()
– ViFI
Jul 11 '16 at 10:37
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Why not abstract fields?
... adding new features if they could be easily simulated by other features already in the language.
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What REALLY happens when you don't free after malloc?
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Might be because the question, as I read it, is what is actually happening to the leaked memory, not whether this specific example is okay. I wouldn't vote it down though, because it's a still a good answer.
– DevinB
Mar 1...
How do I set cell value to Date and apply default Excel date format?
I've been using Apache POI for some time to read existing Excel 2003 files programmatically. Now I have a new requirement to create entire .xls files in-memory (still using Apache POI) and then write them to a file at the end. The only problem standing in my way is the handling of cells with dates.
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PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
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@Strae: I'm reading this as: each customer has it's database customer1_database, customer2_database and within those databases you have user_schema, documents_schema.
– frankhommers
Dec 12 '16 at 22...
Canary release strategy vs. Blue/Green
...n with the addition of smart routing of specific users to the new version. Read the post for a detailed comparison
Blue/Green:
Canary:
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How can I color Python logging output?
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I already knew about the color escapes, I used them in my bash prompt a while ago. Thanks anyway.
What I wanted was to integrate it with the logging module, which I eventually did after a couple of tries and errors.
Here is what ...