= Reading Files at Compile Time =

== Description ==

D lets you do a lot code execution during compile time, also known as Compile Time Function Evaluation (CTFE). Sometimes the information you want to work with at compile time is located in a file, you can access the content by using import("filename"); which returns a character array.

== Example ==

File: ctfi.txt
{{{
Hello World
}}}

File: ctfi.d
{{{
#!d
import std.stdio;

void main() {
	const foo = import("ctfi.txt");

	writefln(foo);
}
}}}

If you try to compile this with $ dmd ctfi.d you will receive the error

{{{ctfi.d(6): Error: need -Jpath switch to import text file ctfi.txt}}}

This is the path for file imports that are not libraries. Use the following for compilation:

Compile:
{{{
dmd -J. ctfi.d
}}}