Do while

[nate100]

I am unclear as to how the following does not produce any results as display tmp_buff.ln tmp_buff.name does not show the results:

def var i as int.

def temp-table tmp
field ln as int
field name as char.

def buffer tmp_buff for tmp.

create tmp.
assign tmp.ln = 1
tmp.name = "one".

create tmp.
assign tmp.ln = 2
tmp.name = "two".

create tmp.
assign tmp.ln = 3
tmp.name = "three".

create tmp.
assign tmp.ln = 4
tmp.name = "four".

create tmp.
assign tmp.ln = 5
tmp.name = "five".

for each tmp:
i = tmp.ln.

do while avail tmp_buff:
message "in avail loop". pause.
i = i + 1.

for first tmp_buff where tmp_buff.ln = i:
display tmp_buff.ln tmp_buff.name.
end. /* for each */
end. /* do while */
end. /* for each tmp */

 

[TomBascom]

It doesn't show anything in the DO WHILE because you never FIND or FOR tmp_buff until inside the WHILE (which fails immediately because no tmp_buff is available) .

 

[mosfin]

do while avail tmp_buff:

will never execute, you must do find tmp_buf 1st