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promise already under evaluation: recursive default argument reference or earlier problems?
...instances where they occur we get:
f <- function(x, T) {
10 * sin(0.3 * x) * sin(1.3 * x^2) + 0.001 * x^3 + 0.2 * x + 80
}
g <- function(x, T, f. = f) { ## 1. note f.
exp(-f.(x)/T)
}
test<- function(g. = g, T = 1) { ## 2. note g.
g.(1,T)
}
test()
## [1] 8.560335e-37
...
How to replace list item in best way
...tem.
List<string> listOfStrings = new List<string> {"abc", "123", "ghi"};
listOfStrings[listOfStrings.FindIndex(ind=>ind.Equals("123"))] = "def";
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...
Programmatically Lighten or Darken a hex color (or rgb, and blend colors)
...n or darken a hex color by a specific amount. Just pass in a string like "3F6D2A" for the color ( col ) and a base10 integer ( amt ) for the amount to lighten or darken. To darken, pass in a negative number (i.e. -20 ).
...
Array extension to remove object by value
... self.removeAtIndex(index)
}
}
}
Example:
var ar = [1, 2, 3, 2]
ar.removeObject(2)
print(ar) // [1, 3, 2]
Update for Swift 2 / Xcode 7 beta 2: As Airspeed Velocity noticed
in the comments, it is now actually possible to write a method on a generic type that is more restrictive on...
How to implement an STL-style iterator and avoid common pitfalls?
...
239
http://www.cplusplus.com/reference/std/iterator/ has a handy chart that details the specs of §...
Casting a variable using a Type variable
...e provided as the second argument.
For example:
Type intType = typeof(Int32);
object value1 = 1000.1;
// Variable value2 is now an int with a value of 1000, the compiler
// knows the exact type, it is safe to use and you will have autocomplete
int value2 = Convert.ChangeType(value1, intType);
/...
What is a Manifest in Scala and when do you need it?
...
Mitch BlevinsMitch Blevins
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C++ templates that accept only certain types
...s are invalid, and will cause linker error messages.
[Minor EDIT 6/12/2013: Using a declared-but-not-defined template will result in linker, not compiler, error messages.]
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