iterator?()
public
Returns true if yield would execute a block in the
current context. The iterator? form is mildly
deprecated.
def try
if block_given?
yield
else
"no block"
end
end
try
try { "hello" }
try do "hello" end
Show source
/*
* call-seq:
* block_given? => true or false
* iterator? => true or false
*
* Returns <code>true</code> if <code>yield</code> would execute a
* block in the current context. The <code>iterator?</code> form
* is mildly deprecated.
*
* def try
* if block_given?
* yield
* else
* "no block"
* end
* end
* try
* try { "hello" }
* try do "hello" end
*/
static VALUE
rb_f_block_given_p()
{
if (ruby_frame->prev && ruby_frame->prev->iter == ITER_CUR && ruby_block)
return Qtrue;
return Qfalse;
}