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Why is Go so slow (compared to Java)?
As we could see from The Computer Language Benchmarks Game in 2010:
10 Answers
10
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How to get an object's property's value by property name?
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209
Sure
write-host ($obj | Select -ExpandProperty "SomeProp")
Or for that matter:
$obj."SomeP...
How to comment out a block of code in Python [duplicate]
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answered Mar 23 '09 at 22:20
John FeminellaJohn Feminella
271k3939 gold badges320320 silver badges337337 bronze badges
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How to wait for several Futures?
...hat, you could try something like this:
val fut1 = Future{Thread.sleep(3000);1}
val fut2 = Promise.failed(new RuntimeException("boo")).future
val fut3 = Future{Thread.sleep(1000);3}
def processFutures(futures:Map[Int,Future[Int]], values:List[Any], prom:Promise[List[Any]]):Future[List[Any]...
What's wrong with overridable method calls in constructors?
....out.println(x);
}
}
new Child(42); // prints "0"
}
}
Here, when Base constructor calls overrideMe, Child has not finished initializing the final int x, and the method gets the wrong value. This will almost certainly lead to bugs and errors.
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Cal...
How do I diff the same file between two different commits on the same branch?
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edited Jan 20 '16 at 5:25
mikek3332002
3,37044 gold badges3232 silver badges4444 bronze badges
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ListView addHeaderView causes position to increase by one?
... adapter solution does.
– Dori
Aug 20 '13 at 9:04
3
also you have to cast the item in this case.
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Why doesn't list have safe “get” method like dictionary?
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10
I don't think this is about efficiency at at all - checking if a key is present in a dictionary and / or returning an item are O(1). It won...
How to convert C# nullable int to int
...if(v1==null)
v2 = default(int);
else
v2 = v1;
Also, as of .NET 4.0, Nullable<T> has a "GetValueOrDefault()" method, which is a null-safe getter that basically performs the null-coalescing shown above, so this works too:
v2 = v1.GetValueOrDefault();
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Is Fortran easier to optimize than C for heavy calculations?
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450
The languages have similar feature-sets. The performance difference comes from the fact that For...