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Scala type programming resources
...(i.e. there is an implicit conversion from A to a subtype of B)
an example
more comparison operators
Converting between types and values
In many of the examples, types defined via traits are often both abstract and sealed, and therefore can neither be instantiated directly nor via anonymous su...
Reference: Comparing PHP's print and echo
... if the expression is a simple one, such as print "Hello, world!". With a more complex expression such as print (5 ** 2 + 6/2); // 28 the parentheses aid the evaluation of the expression. Unlike function names, print is syntactically a keyword, and semantically a "language construct".
The term "...
When to use IList and when to use List
...on inside. Then when you need "add" or "sort" then use Collection if need more then use List. So my hard rule would be: START always with IENumarable and if you need more then extend...
– ethem
Apr 26 '13 at 18:25
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Semaphore vs. Monitors - what's the difference?
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How can I get a resource “Folder” from inside my jar File?
...; entries = jar.entries(); //gives ALL entries in jar
while(entries.hasMoreElements()) {
final String name = entries.nextElement().getName();
if (name.startsWith(path + "/")) { //filter according to the path
System.out.println(name);
}
}
jar.close();
}...
Python loop counter in a for loop [duplicate]
...mple code below, is the counter = 0 really required, or is there a better, more Python, way to get access to a loop counter? I saw a few PEPs related to loop counters, but they were either deferred or rejected ( PEP 212 and PEP 281 ).
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Whether a variable is undefined [duplicate]
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if (var === undefined)
or more precisely
if (typeof var === 'undefined')
Note the === is used
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How is pattern matching in Scala implemented at the bytecode level?
..._ => // do nothing, this is the tail else on the if/else
There's much more that you can do with patterns like or patterns and combinations like "case Foo(45, x)", but generally those are just logical extensions of what I just described. Patterns can also have guards, which are additional cons...