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When to use in vs ref vs out
...efore ) and the best explanation seems to be that ref == in and out , what are some (hypothetical or code) examples where I should always use out and not ref .
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Why doesn't Python have a sign function?
...luded sign() in math, but it wasn't accepted, because they didn't agree on what it should return in all the edge cases (+/-0, +/-nan, etc)
So they decided to implement only copysign, which (although more verbose) can be used to delegate to the end user the desired behavior for edge cases - which so...
DateTime vs DateTimeOffset
... others were taking pictures, they could be from different angles. This is what the Offset part of the DateTimeOffset represents.
So if you label your camera "Eastern Time", sometimes you are pointing from -5, and sometimes you are pointing from -4. There are cameras all over the world, all labele...
Are std::vector elements guaranteed to be contiguous?
...C, :) Actually C++03 is also called C++98-TC1 (technical corrigendum) from what i read
– Johannes Schaub - litb
May 11 '09 at 18:02
2
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Difference between Convert.ToString() and .ToString()
What is the difference between Convert.ToString() and .ToString() ?
19 Answers
19
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Unit testing Anti-patterns catalogue
...populated, the test will fail and leave little indication to the developer what it wanted, or why… forcing them to dig through acres of code to find out where the data it was using was supposed to come from.
Sadly seen this far too many times with ancient .dlls which depend on nebulous and vari...
Separation of business logic and data access in django
... . This code is confusing and, after a certain time, I cease to understand what is really happening.
10 Answers
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Catch an exception thrown by an async void method
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It's somewhat weird to read but yes, the exception will bubble up to the calling code - but only if you await or Wait() the call to Foo.
public async Task Foo()
{
var x = await DoSomethingAsync();
}
public async void DoFoo()
{
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In mocha testing while calling asynchronous function how to avoid the timeout Error: timeout of 2000
... are not discouraged in the link above. It just says you just need to know what they do so you don't screw up when needing to access the context. I never need the context, as relying on timeouts are fragile, and all my tests run in a few ms, but I do come across the same issue when using sinon-test....
Troubleshooting “Illegal mix of collations” error in mysql
...s so that they match, or else add a COLLATE clause to your expression.
What is this "collation" stuff anyway?
As documented under Character Sets and Collations in General:
A character set is a set of symbols and encodings. A collation is a set of rules for comparing characters in a characte...