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When to use SELECT … FOR UPDATE?
... a copy of the record (in one or another way) and generally readers do not block writers and vice versa. For these databases, a SELECT FOR UPDATE would come handy: it would lock either SELECT or the DELETE query until another session commits, just as SQL Server does.
When should one use REPEATA...
assign multiple variables to the same value in Javascript
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Besides moveUp becoming block-scoped, it would make no difference. 5 global variables would still be declared.
– Govind Rai
Jul 5 '18 at 15:08
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How does the new automatic reference counting mechanism work?
...e other improvements include zeroing weak references, automatic copying of blocks to the heap, speedups across the board (6x for autorelease pools!).
More detailed discussion about how all this works is found in the LLVM Docs on ARC.
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Extract elements of list at odd positions
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please answer with brief explanation and put some code blocks properly formatted. Thanks
– venkata krishnan
Jul 30 '19 at 6:44
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How to fix 'android.os.NetworkOnMainThreadException'?
...er naive nor stupid, but who simply require a SYNCHRONOUS (i.e.: this must block the app) call, this is exactly what's needed. I'm more than happy that Android throws the exception by default (IMHO it's a very "helpful" thing to do!) - but I'm equally happy to say "thanks, but - this is actually wha...
Java 7 language features with Android
...uire byte code changes. For example, the multi-catch just copies the catch-block for each possible exception.
The only problem should be that the new classes introduced in Java 7 are missing in Android, like AutoCloseable, so I'm not sure if you can use the try-with-resources feature (somebody trie...
What do (lambda) function closures capture?
...re for what dynamic scope really is: voidspace.org.uk/python/articles/code_blocks.shtml .
– Claudiu
Jun 29 '10 at 15:21
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Resolve Type from Class Name in a Different Assembly
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In any case, you can wrap it in a try catch block with a System.NullReferenceException. Much more likely to be mistaken in this - "MyProject.Domain.Model.ClassName, ClassName, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" then in this - "MyProject....
What's the difference between @Component, @Repository & @Service annotations in Spring?
...usually a handler for that exception and there is no need to add try catch blocks in the DAO class. It is used along with PersistenceExceptionTranslationPostProcessor
– Oliver
Sep 11 '15 at 12:37
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difference between iframe, embed and object elements
...o get the visitor to follow a redirect chain originating at a website that blocks framing. (We use it to kick off federated login.)
– Riking
Jun 30 '15 at 19:46
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