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NSOperation vs Grand Central Dispatch
...asses that do a similar thing. NSOperation was introduced first, but as of 10.5 and iOS 2, NSOperationQueue and friends are internally implemented using GCD.
In general, you should use the highest level of abstraction that suits your needs. This means that you should usually use NSOperationQueue in...
How to obtain a Thread id in Python?
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edited Mar 24 '19 at 10:08
Acumenus
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Pass all variables from one shell script to another?
...o set an environment variable, you can either use an existing variable:
A=10
# ...
export A
This ought to work in both bash and sh. bash also allows it to be combined like so:
export A=10
This also works in my sh (which happens to be bash, you can use echo $SHELL to check). But I don't belie...
How do I create delegates in Objective-C?
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Should I commit or rollback a read transaction?
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Azure SQL Database Bacpac Local Restore
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This can be done simply through SQL Server Management Studio 2012
Right click on the Connect...
Member '' cannot be accessed with an instance reference
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Why java.lang.Object is not abstract? [duplicate]
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14 Answers
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