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Scala: What is the difference between Traversable and Iterable traits in Scala collections?
...foldRight, its foreach needs to traverse the elements in a known and fixed order. Therefore it's possible to implement an iterator for a Traversable. E.g.
def iterator = toList.iterator
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C# generic type constraint for everything nullable
...valent to OR in generics. However I can propose to use default key word in order to create null for nullable types and 0 value for structures:
public class Foo<T>
{
private T item;
public bool IsNullOrDefault()
{
return Equals(item, default(T));
}
}
You could also i...
What is the difference between concurrent programming and parallel programming?
...terministic because the responses are not necessarily received in the same order each time the program is run. This characteristic can make it very hard to debug concurrent programs. Some applications are fundamentally concurrent, e.g. web servers must handle client connections concurrently. Erlang,...
Installing MSBuild 4.0 without Visual Studio 2010
...applications. I'm assuming this is the SDK we have all been looking for in order to install on our build servers so I'm downloading it now and I'll post any further findings after I check it out.
UPDATE: I can confirm that the link provided above does indeed install MSBuild along with other portion...
How does “this” keyword work within a function?
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How to retrieve POST query parameters?
... parameter handling (qs) rather than the low-level querystring library. In order to parse repeated parameters with qs, the parameter needs to have brackets: name[]=val1&name[]=val2. It also supports nested maps. In addition to parsing HTML form submissions, the bodyParser can parse JSON requests...
The preferred way of creating a new element with jQuery
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I personally think that it's more important for the code to be readable and editable than performant. Whichever one you find easier to look at and it should be the one you choose for above factors.
You can write it as:
$('#box').ap...
Container-fluid vs .container
...uestion that would be great but SO does not seem to let us suggest our own order. And reading my original comment I was not as clear as I could have been. Anyhoo thanks for the info.
– BeNice
Jun 21 '19 at 16:51
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NumPy or Pandas: Keeping array type as integer while having a NaN value
...that has NA converting to the new 'Int64' dtype will give you an error. In order to solve this you have to round the numbers and then do ".astype('Int64')"
s1 = pd.Series([1.434, 2.343, np.nan])
#without round() the next line returns an error
s1.astype('Int64')
#cannot safely cast non-equivalent f...
smart pointers (boost) explained
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