Provided by: gawk_4.1.4+dfsg-1build1_amd64 bug

NAME

       writea, reada - write and read gawk arrays to/from files

SYNOPSIS

       @load "rwarray"

       ret = writea(file, array)
       ret = reada(file, array)

DESCRIPTION

       The rwarray extension adds two functions named writea().  and reada(), as follows.

       writea()
              This  function takes a string argument, which is the name of the file to which dump
              the array, and the array itself  as  the  second  argument.   writea()  understands
              multidimensional arrays.  It returns one on success, or zero upon failure.

       reada()
              is  the inverse of writea(); it reads the file named as its first argument, filling
              in the array named as the second argument. It clears the array  first.   Here  too,
              the return value is one on success and zero upon failure.

NOTES

       The  array  created  by reada() is identical to that written by writea() in the sense that
       the contents are the same. However, due to  implementation  issues,  the  array  traversal
       order of the recreated array will likely be different from that of the original array.  As
       array traversal order in AWK is by default undefined, this is not (technically) a problem.
       If  you  need to guarantee a particular traversal order, use the array sorting features in
       gawk to do so.

       The file contains binary data.  All integral values are written  in  network  byte  order.
       However,  double precision floating-point values are written as native binary data.  Thus,
       arrays containing only string data can theoretically be dumped on systems  with  one  byte
       order and restored on systems with a different one, but this has not been tried.

EXAMPLE

       @load "rwarray"
       ...
       ret = writea("arraydump.bin", array)
       ...
       ret = reada("arraydump.bin", array)

SEE ALSO

       GAWK:  Effective  AWK  Programming, filefuncs(3am), fnmatch(3am), fork(3am), inplace(3am),
       ordchr(3am), readdir(3am), readfile(3am), revoutput(3am), time(3am).

AUTHOR

       Arnold Robbins, arnold@skeeve.com.

COPYING PERMISSIONS

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