instance method

Binding#local_variables

() -> ::Array[::Symbol]

binding.local_variables → Array

static VALUE
bind_local_variables(VALUE bindval)
{
    const rb_binding_t *bind;
    const rb_env_t *env;

    GetBindingPtr(bindval, bind);
    env = VM_ENV_ENVVAL_PTR(vm_block_ep(&bind->block));
    return rb_vm_env_local_variables(env);
}

Returns the names of the binding’s local variables as symbols.

Example

def foo
  a = 1
  2.times do |n|
    binding.local_variables #=> [:a, :n]
  end
end

This method is the short version of the following code:

Example

binding.eval("local_variables")

Ruby version changes

4.0
- Binding#local_variables does no longer include numbered parameters. Also, Binding#local_variable_get, Binding#local_variable_set, and Binding#local_variable_defined? reject to handle numbered parameters. [Bug #21049]

See also #local_variable_get #local_variable_set #local_variable_defined? #receiver also in 4.1 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0

‹ prev#local_variable_get next ›#local_variable_set