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Why is the default value of the string type null instead of an empty string?
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It's called a Null-Conditional Operator. You can read about it here msdn.microsoft.com/en-us/magazine/dn802602.aspx
– russelrillema
Jun 26 '18 at 9:12
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How to close tag properly?
...ng slash is required or specified. In fact, without looking it up, further reading in that section will state that the closing slash has no meaning, does nothing and browsers are required to ignore it. So it is useless and pointless and brings us back to my original comment: the closing slash is not...
How do I write stderr to a file while using “tee” with a pipe?
...that in a trap '...' EXIT.
There is a better way to do this, and you've already discovered it: tee.
Only, instead of just using it for your stdout, have a tee for stdout and one for stderr. How will you accomplish this? Process substitution and file redirection:
command > >(tee -a stdout....
Verifying a specific parameter with Moq
...parate method, but I don't like to do this because it disrupts the flow of reading the test code.
Another option is to use a callback on the Setup call to store the value that was passed into the mocked method, and then write standard Assert methods to validate it. For example:
// Arrange
MyObjec...
Generate random numbers uniformly over an entire range
...te, and the sequence is deterministic). Knuth has an excellent (if hard-to-read) treatise on random number generators, and I recently found LFSR to be excellent and darn simple to implement, given its properties are OK for you.
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Xcode doesn't show the line that causes a crash
...bi.dylib: terminating with uncaught exception of type NSException
If you read carefully the First Throw call stack
0 CoreFoundation 0x000000010e85cd4b __exceptionPreprocess + 171
1 libobjc.A.dylib 0x000000010e2be21e objc_exception_throw + 48
0 and 1 are the system p...
Undo git reset --hard with uncommitted files in the staging area
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Guys reading this, beware that this only works for a single commit hash, if there was more than a single commit, it won't solve the problem at once!
– Ain Tohvri
Jun 5 '14 at 0:39
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Why should the “PIMPL” idiom be used? [duplicate]
...ser to include them.
I'm developing a library for nonlinear optimization (read "lots of nasty math"), which is implemented in templates, so most of the code is in headers. It takes about five minutes to compile (on a decent multi-core CPU), and just parsing the headers in an otherwise empty .cpp ta...
Which is faster : if (bool) or if(int)?
...have the same performance, and there are no partial-register penalties for reading %dil. (But that doesn't stop clang from amusingly creating a partial-register stall by using byte-size and on AL as part of branchlessly case-flipping between 99 and -99.)
– Peter Cordes
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How to remove convexity defects in a Sudoku square?
...@1*: I think it's called "white image adjustment". Don't ask me where I've read about it, it's a standard image processing tool. The model behind the idea is simple: The amount of light reflected from a (Lambertian) surface is just the surface brightness times the amount of light a white body in the...