3.2.42 formline
formlinePICTURE,LIST
This is an internal function used by formats, although you may
also call it. It formats a
list of values according to the contents of
PICTURE
, placing the
output into the format output accumulator,
$^A
. Eventually,
when a
write
is done, the contents of
$^A
are written to
some filehandle, but you could also read
$^A
yourself and then
set
$^A
back to
""
. Note that a format typically does
one
formline
per line of form, but the
formline
function
itself doesn't care how many newlines are embedded in the
PICTURE
.
This means that the
~
and
~~
tokens will treat the
entire
PICTURE
as a single line. You may therefore need to use
multiple formlines to implement a single record-format, just like the
format compiler.
Be careful if you put double quotes around the picture, since an
@
character may be taken to mean the beginning of an array name.
formline
always returns true.
See "Formats" in
Chapter 2
for other examples.
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| 3.2.41 format |
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3.2.43 getc |