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Generate Java classes from .XSD files…?
...dator off
unmarshaller.setSchema(null);
Object xmlObject = Item.getClass().cast(unmarshaller.unmarshal(xmlContentBytes));
return xmlObject;
...
For complete code Listing please see Code Listing 2 (main.java). The XML source can come in many forms both from Stream and file. The only difference, agai...
generate days from date range
...I had only scrolled down a bit more... sigh. Anyways, thank you. I added a CAST( <expression> AS DATE) to remove the time on my version. Also used where a.Date between GETDATE() - 365 AND GETDATE() ...if you run your query today it would give no rows if you dont notice the dates in the WHERE...
Weighted random numbers
...umber using gen, distributed according to dist
unsigned r = static_cast<unsigned>(dist(gen));
// Sanity check
assert(interval[0] <= r && r <= *(std::end(interval)-2));
// Save r for statistical test of distribution
avg[r - 1]++;
}
/...
Call static method with reflection
... your method signature is different from Action you could replace the type-casts and typeof from Action to any of the needed Action and Func generic types, or declare your Delegate and use it. My own implementation uses Func to pretty print objects:
static class PrettyPrinter {
static PrettyPr...
Null or default comparison of generic argument in C#
...ype
Console.WriteLine("test".IsDefault());
// null must be cast to a type
Console.WriteLine(((String)null).IsDefault());
}
}
// The type cannot be generic
public static class TypeHelper
{
// I made the method generic instead
public static bool IsDefault<T>(...
comparing 2 strings alphabetically for sorting purposes
...erBool ? 1 : -1;
});
Note: Be careful for upper letters, you may need to cast your string to lower case due to your purpose.
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Reshaping data.frame from wide to long format
...
reshape() takes a while to get used to, just as melt/cast. Here is a solution with reshape, assuming your data frame is called d:
reshape(d,
direction = "long",
varying = list(names(d)[3:7]),
v.names = "Value",
idvar = c("Code", "Country"),
...
What is the purpose of std::make_pair vs the constructor of std::pair?
...from making the mistake of passing types o1 or o2 that can't implicitly be cast to T1 or T2. For instance passing a negative number to an unsigned int. -Wsign-conversion -Werror will not catch this error with std::pair constructor in c++11 however it will catch the error if std::make_pair is used.
...
Difference between case object and object
... difference:
scala> foo.asInstanceOf[Serializable]
java.lang.ClassCastException: foo$ cannot be cast to scala.Serializable
... 43 elided
scala> foocase.asInstanceOf[Serializable]
res1: Serializable = foocase
toString difference:
scala> foo
res2: foo.type = foo$@7bf0b...
Method has the same erasure as another method in type
... type Set. Generics don't exist in byte code, they're syntactic sugar for casting and provide compile-time type safety.
– Andrzej Doyle
Jan 4 '10 at 13:40
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