diff options
Diffstat (limited to 'eval.c')
| -rw-r--r-- | eval.c | 9 |
1 files changed, 4 insertions, 5 deletions
@@ -8264,15 +8264,14 @@ static VALUE method_arity _((VALUE)); * call-seq: * prc.arity -> fixnum * - * Returns the number of arguments required by the block. If the block + * Returns the number of arguments that would not be ignored. If the block * is declared to take no arguments, returns 0. If the block is known * to take exactly n arguments, returns n. If the block has optional * arguments, return -n-1, where n is the number of mandatory - * arguments. A <code>proc</code> with no argument declarations - * returns -1, as it can accept (and ignore) an arbitrary number of - * parameters. + * arguments. A <code>proc</code> with no argument declarations + * is the same a block declaring <code>||</code> as its arguments. * - * Proc.new {}.arity #=> -1 + * Proc.new {}.arity #=> 0 * Proc.new {||}.arity #=> 0 * Proc.new {|a|}.arity #=> 1 * Proc.new {|a,b|}.arity #=> 2 |