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What's the difference between the atomic and nonatomic attributes?
...= userName_;
}
}
Basically, the atomic version has to take a lock in order to guarantee thread safety, and also is bumping the ref count on the object (and the autorelease count to balance it) so that the object is guaranteed to exist for the caller, otherwise there is a potential race conditi...
How to write a large buffer into a binary file in C++, fast?
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Try the following, in order:
Smaller buffer size. Writing ~2 MiB at a time might be a good start. On my last laptop, ~512 KiB was the sweet spot, but I haven't tested on my SSD yet.
Note: I've noticed that very large buffers tend to decrease pe...
Is 'switch' faster than 'if'?
... versa" - any support for this assertion? a compiler might assume that the order of your if clauses has already been hand-tuned to match frequency and relative performance needs, where as a switch is traditionally seen as an open invitation to optimise however the compiler chooses. Good point re ju...
Installing Java on OS X 10.9 (Mavericks)
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Edited - but not actually sure that the re-ordering really happens: they all seem to be where they were, regardless of upvotes. NVM
– Marco Massenzio
Dec 25 '13 at 2:41
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Abort makefile if variable not set
... :|check-defined-BAR
Notice that the check-defined-BAR is listed as the order-only (|...) prerequisite.
Pros:
(arguably) a more clean syntax
Cons:
One can't specify a custom error message
Running make -t (see Instead of Executing Recipes) will pollute your root directory with lots of check...
How to re-create database for Entity Framework?
... was last at with the scripts. If it can't, it just tries to apply them in order. This means, it goes back to the initial creation script and if you look at the very first part in the UP command, it'll be the CreeateTable for the table that the error was occurring on.
To understand this in more det...
Are lists thread-safe?
...thread safety. Try running the version with locks after changing the start order i.e. start t2 before t1 and you will see the same error. whenever t2 gets ahead of t1 the error will occur no matter if you use locks or not.
– Dev
Nov 8 '19 at 19:10
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Where to find extensions installed folder for Google Chrome on Mac?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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receiving error: 'Error: SSL Error: SELF_SIGNED_CERT_IN_CHAIN' while using npm
... can ignore the error or perhaps locate/add the cert to a trusted store in order to continue using npm.
13 Answers
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Efficient way to apply multiple filters to pandas DataFrame or Series
...f_2 = df["a"] >= 0etc. No need for that function... (nice use of higher order function though...)
– A. Rabus
Aug 29 '19 at 8:29
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