String interpolation

[TheFlyingFiddle via Digitalmars-d-learn]

On Tuesday, 10 November 2015 at 10:41:52 UTC, tired_eyes wrote:
> On Tuesday, 10 November 2015 at 10:33:30 UTC, Tobias Pankrath 
> wrote:
> Ruby:
> a = 1
> b = 4
> puts "The number #{a} is less than #{b}"
>
> PHP:
> $a = 1;
> $b = 4;
> echo "The number $a is less than $b";
>
> D:
> ???

int a = 1, b = 4;
writefln("The number %s is less than %s", a, b);

You can't do it the ruby / perl / php way in D. It could be 
possible if we had AST macros in the language but as it stands 
now it's not possible to do that.

the closest you could get is something like this:

string s = aliasFormat!("The number $a is less than $b", a, b);

or

aliasWrite!("The number $a is less than $b", a, b);

Not really recommended though as these would end up creating lots 
of template bloat.