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Should the hash code of null always be zero, in .NET
... goes into more detail around the hash code. Poignantly, the documentation does not provide any coverage or discussion of null values at all - not even in the community content.
To address your issue with the enum, either re-implement the hash code to return non-zero, add a default "unknown" enum e...
What's the difference between MemoryCache.Add and MemoryCache.Set?
...
Add does nothing (returns false) if there is already a value for that key. Set does an insert or update, as necessary.
Remove + Add would leave a gap in the middle when another thread querying that key would get no clue (Set doe...
Regular Expressions and negating a whole character group [duplicate]
... be fairly obvious to me but it's not. I'm trying to match a string which does NOT contain a specific sequence of characters. I've tried using [^ab] , [^(ab)] , etc. to match strings containing no 'a's or 'b's, or only 'a's or only 'b's or 'ba' but not match on 'ab'. The examples I gave won't m...
How can I remove a trailing newline?
... all kinds of trailing whitespace by default, not just one newline as Perl does with chomp.
>>> 'test string \n \r\n\n\r \n\n'.rstrip()
'test string'
To strip only newlines:
>>> 'test string \n \r\n\n\r \n\n'.rstrip('\n')
'test string \n \r\n\n\r '
There are also the methods ...
How to strip all whitespace from string
...technique. Not sure if it covers all the white space characters that split does, but it will probably suffice for most ASCII applications.
– brianmearns
Mar 15 '12 at 18:47
...
What is the difference between an interface and abstract class?
... The key point about interfaces is not so much that they say what a class does, but allow objects that can Wizzle to make themselves useful to code that needs a Wizzler. Note that in many cases neither the person who writes the thing that can Wizzle, nor the person who needs a Wizzler, will be the...
How do I POST urlencoded form data with $http without jQuery?
...answer shows. Either way this is superior to the accepted answer since it does not introduce some magic transformation and does not require the user of some auxillary service. Thanks!
– Mr. Bungle
Nov 17 '16 at 20:05
...
Purpose of Unions in C and C++
...number of people, which is what hotels are for.
That's exactly what union does. If you know that several objects in your program hold values with non-overlapping value-lifetimes, then you can "merge" these objects into a union and thus save memory. Just like a hotel room has at most one "active" te...
How to generate sample XML documents from their DTD or XSD?
...
I think Oxygen (http://www.oxygenxml.com/) does it as well, but that's another commerical product. It's a nice one, though... I'd strongly recommend it for anyone doing a lot of XML work. It comes in a nice Eclipse plugin, too.
I do believe there is a free, fully-fea...
How to check that a string is an int, but not a double, etc.?
...onsists of all digits.\n";
} else {
echo "The string $testcase does not consist of all digits.\n";
}
}
?>
The above example will output:
The string 1820.20 does not consist of all digits.
The string 10002 consists of all digits.
The string wsl!12 does not consist of all digits...