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Await on a completed task same as task.Result?
...should never have to deal with AggregateException at all, unless it specifically wants to.
The second reason is a little more subtle. As I describe on my blog (and in the book), Result/Wait can cause deadlocks, and can cause even more subtle deadlocks when used in an async method. So, when I'm read...
Is there XNOR (Logical biconditional) operator in C#?
...anguages where it won't necessarily work. For example, in C, any non-zero scalar value is treated as true, so two "true" values can be unequal. But the question was tagged c#, which has, shall we say, well-behaved booleans.
Note also that this doesn't generalize to bitwise operations, where you wa...
How to convert JSON to a Ruby hash
...ive for larger hash objects? I'm new to Ruby/Rails, but assuming this duplicates key-value pairs?
– Jonathan
Apr 9 '18 at 11:52
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What is ASP.NET Identity's IUserSecurityStampStore interface?
Looking at ASP.NET Identity (new membership implementation in ASP.NET), I came across this interface when implementing my own UserStore :
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std::back_inserter for a std::set?
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set doesn't have push_back because the position of an element is determined by the comparator of the set. Use std::inserter and pass it .begin():
std::set<int> s1, s2;
s1 = getAnExcitingSet();
transform(s1.begin(), s1.end(),
std::insert...
ApartmentState for dummies
...mpletely skips is providing threading guarantees for a class. A COM class can publish what kind of threading requirements it has. And the COM infrastructure makes sure those requirements are met.
This is completely absent in .NET. You can use a Queue<> object for example in multiple thread...
how to generate migration to make references polymorphic
...I'm not mistaken, you do need to add them yourselves if you need them. You can just add indexes as normal in the migration file to imageable_type and/or imageable_id as necessary.
– Michelle Tilley
Apr 20 '14 at 18:23
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WebSocket with SSL
...th an HTTP or HTTPS handshake. When the page is accessed through HTTP, you can use WS or WSS (WebSocket secure: WS over TLS) . However, when your page is loaded through HTTPS, you can only use WSS - browsers don't allow to "downgrade" security.
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How to drop into REPL (Read, Eval, Print, Loop) from Python code
Is there a way to programmatically force a Python script to drop into a REPL at an arbitrary point in its execution, even if the script was launched from the command line?
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How to count occurrences of a column value efficiently in SQL?
... for the second query, the outer select should be on C.cnt because there is no S.cnt, otherwise you get an error: Invalid column name 'cnt'
– KM.
Oct 1 '09 at 14:00
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