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What does a lazy val do?
...ted when it is accessed the first time.
scala> val x = { println("x"); 15 }
x
x: Int = 15
scala> lazy val y = { println("y"); 13 }
y: Int = <lazy>
scala> x
res2: Int = 15
scala> y
y
res3: Int = 13
scala> y
res4: Int = 13
In contrast to a method (defined with def) a lazy v...
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What is the difference between == and Equals() for primitives in C#?
...ode:
public override bool Equals(Object obj) {
if (!(obj is Int16)) {
return false;
}
return m_value == ((Int16)obj).m_value;
}
public bool Equals(Int16 obj)
{
return m_value == obj;
}
Further Reading:
See Eric Lippert.
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Difference between abstract class and interface in Python
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What you'll see sometimes is the following:
class Abstract1( object ):
"""Some description that tells you it's abstract,
often listing the methods you're expected to supply."""
def aMethod( self ):
raise NotImplementedError( "Should have implemented this" )
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