OpenEuphoria

2. Re: Why no post in Stackoverflow.com

• Posted by _tom (admin) Jun 16, 2017
• 1674 views

from stackoverflow

I am trying to read a simple csv (comma separated text file) using Euphoria langauge:  
#! /usr/bin/eui 
 
include get.e 
 
integer file_id = open("myfile.csv","r") 
if file_id != -1 then 
    sequence input_data = gets(file_id) 
    while sequence(input_data) do 
        printf(1, "The string read is: %s", {input_data}) 
        input_data = gets(file_id) 
    end while 
end if 
printf(1, "before closing..\n") 
close(file_id) 
printf(1, "after closing..\n") 
 

However, it end with error at the end of the file and never reaches "before closing" statement. type_check failure, input_data is -1

How can I make this detect end of the file so as to end the program normally? I tried checking documentation but could not find it.

Therefore you want

object input_data = gets(file_id) 

The result is when a line of code is read you are reading a sequence of values. At the end of file the return is an atom, which you use to end the input loop.

If you use the object declaration you can use both data-types at the same time.

You "could" use object for every variable and you program will run. However, it is easier to read code when it is divided into atom and sequence. You can even declare your own data-types based on the default data-types.

include std/io.e 
 
fh = open ( " my_file.txt " , "r" ) 
data = read_file ( fh ) 
close ( fh ) 
 
 
-- data contains the entire contents of ## my_file.txt ## 
 
-- there is also write_file 
 

I guess they need more programmers!

_tom

4. Re: Why no post in Stackoverflow.com

• Posted by petelomax Jun 16, 2017
• 1654 views

Congratulations on posting the first ever properly-tagged Euphoria question on stackoverflow!

I've taken the liberty of answering it there, as above [object not sequence input_data]

Tom, do you have any thoughts on writing a tag wiki for OpenEuphoria?

Pete

6. Re: Why no post in Stackoverflow.com

• Posted by _tom (admin) Jun 16, 2017
• 1607 views

Welcome to the Euphoria Languages: Euphoria, ⵚpenEuphoria, and Phix.

Thanks for your observation about Stackoverflow; it is valid and should be addressed.

Sorry, but I'm still trying to catch up on updating the ⵚE docs.

Pete. Yes, we need tag wikis. We will need to work together on this.

We are always short handed here. Here is hoping that you like Euphoria enough that you will be willing to help out.

_tom

8. Re: Why no post in Stackoverflow.com

• Posted by jmduro Jun 18, 2017
• 1504 views

I didn't find this sign in Windows character table which is already huge in size. Maybe Π(Latin capital ligature OE) would be easier to type (Alt+0140).

Jean-Marc

10. Re: Why no post in Stackoverflow.com

• Posted by petelomax Jun 18, 2017
• 1487 views

Either of

"\xE2\xB5\x9A"&"E" 
"\u2D5A"&"E" 

should work. (tested on Phix, using MessageBoxW anyway)

Pete

12. Re: Why no post in Stackoverflow.com

• Posted by rneu Jun 25, 2017
• 1409 views

include std/io.e 
 
fh = open ( " my_file.txt " , "r" ) 
data = read_file ( fh ) 
close ( fh ) 
 
-- data contains the entire contents of ## my_file.txt ## 
-- there is also write_file 

Thanks for this most convenient method.