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Regular expression to match DNS hostname or IP Address?
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@UserControl: Non-latin (Punycoded) hostnames must be converted to ASCII form first (éxämplè.com = xn--xmpl-loa1ab.com) and then validated.
– Alix Axel
Jul 21 '13 at 8:36
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Why are side-effects modeled as monads in Haskell?
...re functions together
We defined a function impurify :: a -> IO a which converts a pure value to impure.
Now we make the identification (>>=) = (~~~) and return = impurify, and see? We've got a monad.
Technical note
To ensure it's really a monad, there's still a few axioms which need to b...
There is already an open DataReader associated with this Command which must be closed first
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use the syntax .ToList() to convert object read from db to list to avoid being re-read again.Hope this would work for it. Thanks.
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Conversion of a datetime2 data type to a datetime data type results out-of-range value
... value so the insert / update is valid, however it fails when SQL tries to convert this DateTime2 to a DateTime because this will result in a different value. Two solutions are: 1 Use a nullable datetime in your model or 2. initialize all your datetime values, to the correct value before saving cont...
How to check that an element is in a std::set?
... IMO using count() is better because it is simply shorter and it converts to bool as noted in the answer by Pieter. I don't understand why this answer got accepted and so many points...
– Огњен Шобајић
Mar 27 '15 at 6:08
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Spring Boot - inject map from application.yml
...rater for "(quote) in yaml string
{key:value} JSON in yaml which will be converted to Map by @Value
#{ } it is SpEL expresion and can be used in @Value to convert json int Map or Array / list Reference
Tested in a spring boot project
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Is 1.0 a valid output from std::generate_canonical?
...The standard could ensure correct behavior if it were to specify that when converting from the output of the URNG to the RealType of generate_canonical, rounding is to be performed towards negative infinity; this would give a correct result in this case. As QOI, it would be good for libstdc++ to ma...
Unable to Cast from Parent Class to Child Class
...arent and then deserialize it into the child.
var serializedParent = JsonConvert.SerializeObject(parentInstance);
Child c = JsonConvert.DeserializeObject<Child>(serializedParent);
I have a simple console app that casts animal into dog, using the above two lines of code over here
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Difference between Statement and PreparedStatement
...ters to the DBMS as separate packets of information after the SQL has been converted into a query plan.
– IMSoP
Sep 13 '16 at 15:02
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Sorting HashMap by values [duplicate]
...exity of O(n^2) due to repeatedly looking up in values in two while loops. Converting the Entry Set to a List and then sorting the List based on a comparator would be a more efficient solution.
– picmate 涅
May 21 '16 at 2:53
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