1. From scratch: include
- Posted by alrobnett Dec 19, 2018
- 965 views
I sent my Euphoria to the recycle bin, downloaded Euphoria 4.0.1 and am starting from scratch to recreate my binary tree program using simplest commands. But I have run into trouble right off the bat. My first line of code is:
include std/filesys.e
etc.
Execution results in error message:
c:\EUPHORIA\include\std/filesys.e
namespace has not been declared
namespace filesys
I am puzzled by the swap between \ and /,
But more urgently, should I have included some file that declares "namespace"?
2. Re: From scratch: include
- Posted by _tom (admin) Dec 20, 2018
- 952 views
Is OE "4.0.1" a typo? Let us assume you are using 4.1.0 instead.
Windows uses backwards \ as a separator. Linux uses / as a separator. Win10 can use both forms (even if it sticks to the backwards style.)
Try running a minimal program, one line:
include std/filesys.e
This shouid run with nothing happening; it just loads some routines but does nothing with them.
If you examine the "filesys.e" file you will see the first statement is:
namespace filesys
A "namespace" is an extra identifier ( in this example filesys ) you can prefix to to an existing identifier (for a variable or function or ... ) It is something used in an emergency when you use the same name in two files--add a namespace prefix and duplicate names now become different.
So, not something to worry about now.
I am using Linux, with / separators.
The next program you should run is:
include std/filesys.e puts(1, current_dir() )
I have never seen a "namespace not declared error before" The error suggests a typo somewhere or a real puzzle that must be solved.
_tom
3. Re: From scratch: include
- Posted by SDPringle Dec 20, 2018
- 941 views
The symptoms are consistent with a user running 3.1 accidentally. The new command line name for the interpreter is 'eui'.
4. Re: From scratch: include
- Posted by alrobnett Dec 20, 2018
- 992 views
Thanks Tom and SDPringle,
It works fine when I use eui, Allen
