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C# Thread safe fast(est) counter
...ment will have better performance than lock(). Just take a look at the IL and Assembly where you will see that Increment turns into a "bus lock" statement and its variable is directly incremented (x86) or "added" to (x64).
This "bus lock" statement locks the bus to prevent another CPU from acces...
What does the “Just” syntax mean in Haskell?
...d does. Every Haskell tutorial that I have looked at just starts using it randomly and never explains what it does (and I've looked at many).
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Git merge left HEAD marks in my files
I tried to merge a file in the command line using Git, when an error message appeared telling me the merge was aborted.
5 ...
On Duplicate Key Update same as insert
.... My question is quiet simple: Do I really need to specify all the fields (and values in my first example) if they are the same as in the insert? I just want to insert all or if there is a unique value match: update all.
– Roy
Jan 17 '13 at 16:36
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jasmine: Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL
... complete. If you never call it, Jasmine will never know your test is done and will eventually timeout.
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How to access command line parameters?
The Rust tutorial does not explain how to take parameters from the command line. fn main() is only shown with an empty parameter list in all examples.
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Why doesn't Haskell's Prelude.read return a Maybe?
...e shuffle. There should be such a function, although one is easy to write (and there are zillions of very similar versions floating around many codebases).
See also this discussion.
Personally, I use the version from the safe package.
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How to convert ActiveRecord results into an array of hashes
...s.all
tasks_records = tasks_records.as_json
# You can now add new records and return the result as json by calling `to_json`
tasks_records << TaskStoreStatus.last.as_json
tasks_records << { :task_id => 10, :store_name => "Koramanagala", :store_region => "India" }
tasks_records...
Android: “Path for project must have only one segment”
... answered Feb 10 '11 at 18:43
Android EveAndroid Eve
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What is “stdafx.h” used for in Visual Studio?
...rocess. Compiling the huge header structures that form part of Windows API and other large API libraries is a very, very long, slow process. To have to do it over, and over, and over for every single Cpp source file is a death knell.
This is not unique to Windows but an old problem faced by all com...