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How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
...[T]) else None
}
}
}
scala> Registry.register("a", List(1,2,3))
scala> Registry.get[List[Int]]("a")
res6: Option[List[Int]] = Some(List(1, 2, 3))
scala> Registry.get[List[String]]("a")
res7: Option[List[String]] = None
When storing an element, we store a "Manifest" of it too....
How do I use LINQ Contains(string[]) instead of Contains(string)
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edited Feb 4 '15 at 5:35
answered Oct 12 '08 at 2:01
tv...
How can I use numpy.correlate to do autocorrelation?
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13 Answers
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Total number of items defined in an enum
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answered May 13 '09 at 5:10
Kasper HoldumKasper Holdum
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How do I list all cron jobs for all users?
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23 Answers
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Understanding __get__ and __set__ and Python descriptors
...nce?
– Lemma Prism
Mar 12 '19 at 2:43
2
'instance' can be instance of any class, self will be ins...
jQuery append fadeIn
...chnique.
– Ben Blank
Jun 11 '09 at 23:52
1
thanks for the example! It is style not stle :)
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p vs puts in Ruby
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p foo prints foo.inspect followed by a newline, i.e. it prints the value of inspect instead of...
Why does Assert.AreEqual(T obj1, Tobj2) fail with identical byte arrays
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139
Assert.Equals tests using the Equals method, which by default uses reference equality and, sinc...
Rounding up to next power of 2
.... You need to get the base 2 logarithm, then add 1 to that. Example for a 32-bit value:
Round up to the next highest power of 2
unsigned int v; // compute the next highest power of 2 of 32-bit v
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 1...