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What is the difference between “def” and “val” to define a function
...
Method def even evaluates on call and creates new function every time (new instance of Function1).
def even: Int => Boolean = _ % 2 == 0
even eq even
//Boolean = false
val even: Int => Boolean = _ % 2 == 0
even eq even
//Boolean = true
With def you can get new func...
Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
...his C# - F# example
C#:
public class Class1
{
public static void Foo(Func<object, string> f)
{
Console.WriteLine(f.Method.GetParameters()[0].Name);
}
}
F#:
Class1.Foo(fun yadda -> "hello")
Result:
"arg" is printed (not "yadda").
As a result, library designers sh...
Ternary Operator Similar To ?:
...mport Bool._
// yay!
val x = condition ? "yes" | "no"
}
Have fun ;)
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HTTP POST with URL query parameters — good idea or not? [closed]
...Is are RESTful. In fact, most APIs which claim that actually aren't. Also, fun fact, REST isn't HTTP-only either.
– Alec Mev
Jan 2 '17 at 19:38
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Possible to iterate backwards through a foreach?
...ust have an IEnumerable) then you will just have to write your own Reverse function. This should work:
static IEnumerable<T> Reverse<T>(IEnumerable<T> input)
{
return new Stack<T>(input);
}
This relies on some behaviour which is perhaps not that obvious. When you pass ...
Why doesn't Dictionary have AddRange?
...blic static void ForEachOrBreak<T>(this IEnumerable<T> source, Func<T, bool> func)
{
foreach (var item in source)
{
bool result = func(item);
if (result) break;
}
}
}
}
Have fun.
...
Convert camelCaseText to Sentence Case Text
... I dig the use of spaces in text.replace, I've been padding function calls with 2+ arguments with spaces for readability too
– rkd
Jan 8 '17 at 20:44
8
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R programming: How do I get Euler's number?
...nd
exp(2)
represents e^2.
This works because exp is the exponentiation function with base e.
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How to do a JUnit assert on a message in a logger
...ate static final field, which most loggers are defined? Powermockito? Have fun..
– Stefano L
May 23 '19 at 17:46
Stefa...
Can a C++ enum class have methods?
...is not what John Doe would consider a class, too. Yet they can have member functions. And classes are really not mandatory for member functions. Using a designator like value or this, something like enum Size { Huge, Mega, Apocalypse; bool operator<(X rhs) const { return *this < rhs; } (here a...