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Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
...extInt()).par
scala> timeMany(1000, intParList.reduce(_ + _))
Took 462.395867 milli seconds
scala> timeMany(1000, intParList.foldLeft(0)(_ + _))
Took 2589.363031 milli seconds
reduce vs fold
Now this is where it gets a little closer to the FP / mathematical roots, and a little trickier to...
Declare and initialize a Dictionary in Typescript
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306
Edit: This has since been fixed in the latest TS versions. Quoting @Simon_Weaver's comment on ...
Forward an invocation of a variadic function in C
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Uli Köhler
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answered Sep 29 '08 at 20:56
Adam Rosenfield...
How does std::forward work? [duplicate]
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3 Answers
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How to iterate for loop in reverse order in swift?
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233
Xcode 6 beta 4 added two functions to iterate on ranges with a step other than one:
stride(from...
How to easily map c++ enums to strings
...t; MyMap;
map_init(MyMap)
(eValue1, "A")
(eValue2, "B")
(eValue3, "C")
;
The function template <typename T> map_init(T&) returns a map_init_helper<T>.
map_init_helper<T> stores a T&, and defines the trivial map_init_helper& operator()(typename T::key_type...
What Automatic Resource Management alternatives exist for Scala?
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For now Scala 2.13 has finally supported: try with resources by using Using :), Example:
val lines: Try[Seq[String]] =
Using(new BufferedReader(new FileReader("file.txt"))) { reader =>
Iterator.unfold(())(_ => Option(reader.readL...
What is the use of join() in Python threading?
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302
A somewhat clumsy ascii-art to demonstrate the mechanism:
The join() is presumably called by t...
Are types like uint32, int32, uint64, int64 defined in any stdlib header?
I often see source code using types like uint32, uint64 and I wonder if they should be defined by the programmer in the application code or if they are defined in a standard lib header.
...