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Why Func instead of Predicate?
...delegate with identical declaration!
ExceptionHandler2 x2 = x1; // error at compile time
}
By encouraging everyone to use Func, Microsoft is hoping that this will alleviate the problem of incompatible delegate types. Everyone's delegates will play nicely together, because they will jus...
RRSet of type CNAME with DNS name foo.com. is not permitted at apex in zone bar.com
...set up a CNAME record for bar.com pointing to foo.com , but I got the error message:
5 Answers
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What is the logic behind the “using” keyword in C++?
...ve
using P = [](double)->void; // using plus suffix return type, syntax error
using P = auto(double)->void // Fixed thanks to DyP
Pre-C++11, the using keyword can bring member functions into scope. In C++11, you can now do this for constructors (another Bjarne Stroustrup example):
class Deriv...
Click button copy to clipboard using jQuery
...ndicating whether the copy was successful. It could be used to display an error message on failure. Firefox throws an exception on failure (in v39 at least), requiring a try/catch to handle the error.
– PointZeroTwo
Jul 27 '15 at 17:41
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How do I iterate over an NSArray?
...ss the objects by index, you can run into strange exceptions or off-by-one errors (often long after the problem has occurred) that can be horrific to debug. Enumeration using one of the standard idioms has a "fail-fast" behavior, so the problem (caused by incorrect code) will manifest itself immedia...
Task vs Thread differences [duplicate]
...atively safely (e.g. not in finally clauses etc.), so it will help against errors like infinite loops etc. Using it in production-level code doesn't make much sense, though.
– Luaan
Mar 30 '15 at 12:14
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Why shouldn't I use “Hungarian Notation”?
...ss unsafe data to functions requiring safe data. You should make it a type error, so that it is impossible to do so. Any unsafe data should have a type that is marked unsafe, so that it simply cannot be passed to a safe function. To convert from unsafe to safe should require processing with some kin...
What does a Ajax call response like 'for (;;); { json data }' mean? [duplicate]
...sed at the top-level of a script.
js> {"t":"continue"}
typein:2: SyntaxError: invalid label:
typein:2: {"t":"continue"}
typein:2: ....^
For this example to be exploitable by way of Object() constructor remapping, it would require the API to have instead returned the object inside of a set of p...
CALL command vs. START with /WAIT option
...it-code-from-a-windows-command-line
call regsvr32.exe /s broken.dll
echo %errorlevel%
will always return 0 but
start /wait regsvr32.exe /s broken.dll
echo %errorlevel%
will return the error level from regsvr32.exe
sha...
Python Infinity - Any caveats?
...back (most recent call last):
File "<stdin>", line 1, in ?
OverflowError: (34, 'Numerical result out of range')
The inf value is considered a very special value with unusual semantics, so it's better to know about an OverflowError straight away through an exception, rather than having an i...