Update lazy-evaluation.dd

Author: Flying-Toast

articles/lazy-evaluation.dd

@@ -95,7 +95,7 @@ is possible in the D programming language using a delegate parameter:
 )
 
 ---
-void log(string delegate() dg)
+void log(const(char)[] delegate() dg)
 {
     if (logging)
         fwritefln(logfile, dg());
@@ -123,7 +123,7 @@ The functions then become:
 )
 
 ---
-void log(lazy string dg)
+void log(lazy const(char)[] dg)
 {
     if (logging)
         fwritefln(logfile, dg());
@@ -260,7 +260,7 @@ function:
 )
 
 ---
-Abc Enforce(Abc p, lazy string msg)
+Abc Enforce(Abc p, lazy const(char)[] msg)
 {
     if (!p)
         throw new Exception(msg());
@@ -280,7 +280,7 @@ template function:
 )
 
 ---
-T Enforce(T)(T p,  lazy string msg)
+T Enforce(T)(T p,  lazy const(char)[] msg)
 {
     if (!p)
         throw new Exception(msg());