method

lineno=

v1_8_6_287 - Show latest stable - 0 notes - Class: IO

lineno=(p1) public

Manually sets the current line number to the given value. $. is updated only on the next read.

   f = File.new("testfile")
   f.gets                     #=> "This is line one\n"
   $.                         #=> 1
   f.lineno = 1000
   f.lineno                   #=> 1000
   $. # lineno of last read   #=> 1
   f.gets                     #=> "This is line two\n"
   $. # lineno of last read   #=> 1001

Show source

/*
 *  call-seq:
 *     ios.lineno = integer    => integer
 *  
 *  Manually sets the current line number to the given value.
 *  <code>$.</code> is updated only on the next read.
 *     
 *     f = File.new("testfile")
 *     f.gets                     #=> "This is line one\n"
 *     $.                         #=> 1
 *     f.lineno = 1000
 *     f.lineno                   #=> 1000
 *     $. # lineno of last read   #=> 1
 *     f.gets                     #=> "This is line two\n"
 *     $. # lineno of last read   #=> 1001
 */

static VALUE
rb_io_set_lineno(io, lineno)
    VALUE io, lineno;
{
    OpenFile *fptr;

    GetOpenFile(io, fptr);
    rb_io_check_readable(fptr);
    fptr->lineno = NUM2INT(lineno);
    return lineno;
}

lineno=

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