between and among: worth Phobosization?

[Marco Leise]

Am Mon, 16 Dec 2013 14:31:16 -0800
schrieb "H. S. Teoh" <hsteoh at quickfur.ath.cx>:

> On Mon, Dec 16, 2013 at 01:45:38PM -0800, Walter Bright wrote:
> > On 12/16/2013 12:38 PM, Andrei Alexandrescu wrote:
> > >bool between(T, U1, U2)(T v, U1 lo, U2 hi)
> > >{
> > >     return v >= lo && v <= hi;
> > >}
> > 
> > You'd need 4 such functions, < <, < <=, <= <, <= <=, and it just seems like trivia.
> [...]
> 
> 	bool between(string op1=">=", string op2="<=", T, U1, U2)
> 		    (T v, U1, lo, U2 hi)
> 	{
> 		return mixin("v" ~ op1 ~ "lo") &&
> 			mixin("v" ~ op2 ~ "hi");
> 	}
> 
> 	x.between(y, z);	// y <= x <= z
> 	x.between!(">", "<")(y, z);	// y < x < z
> 	// etc.
> 
> 
> T

Compare:

a) import std.something; x.between!(">", "<")(y, z);
b) y < x && x < z

now which would you use? :-)

-- 
Marco