Exception: NoMethodError

Inherits:

NameError

• Object
• Exception
• StandardError
• NameError
• NoMethodError

Defined in:

error.c,
error.c

Overview

Raised when a method is called on a receiver which doesn’t have it defined and also fails to respond with method_missing.

"hello".to_ary

raises the exception:

NoMethodError: undefined method `to_ary' for "hello":String

Instance Method Summary

• #args ⇒ Object

  Return the arguments passed in as the third parameter to the constructor.

• #new(msg = nil, name = nil, args = nil, private = false, receiver: nil) ⇒ Object constructor

  Construct a NoMethodError exception for a method of the given name called with the given arguments.

• #private_call? ⇒ Boolean

  Return true if the caused method was called as private.

Methods inherited from NameError

#local_variables, #name, #receiver

Methods inherited from Exception

#==, #backtrace, #backtrace_locations, #cause, #exception, exception, #full_message, #inspect, #message, #set_backtrace, #to_s, to_tty?

Constructor Details

#new(msg = nil, name = nil, args = nil, private = false, receiver: nil) ⇒ Object

Construct a NoMethodError exception for a method of the given name called with the given arguments. The name may be accessed using the #name method on the resulting object, and the arguments using the #args method.

If private argument were passed, it designates method was attempted to call in private context, and can be accessed with #private_call? method.

receiver argument stores an object whose method was called.

# File 'error.c', line 1672

static VALUE
nometh_err_initialize(int argc, VALUE *argv, VALUE self)
{
    int priv;
    VALUE args, options;
    argc = rb_scan_args(argc, argv, "*:", NULL, &options);
    priv = (argc > 3) && (--argc, RTEST(argv[argc]));
    args = (argc > 2) ? argv[--argc] : Qnil;
    if (!NIL_P(options)) argv[argc++] = options;
    rb_call_super_kw(argc, argv, RB_PASS_CALLED_KEYWORDS);
    return nometh_err_init_attr(self, args, priv);
}

Instance Method Details

#args ⇒ Object

Return the arguments passed in as the third parameter to the constructor.

Returns:

• (Object)

# File 'error.c', line 1858

static VALUE
nometh_err_args(VALUE self)
{
    return rb_attr_get(self, id_args);
}

#private_call? ⇒ Boolean

Return true if the caused method was called as private.

Returns:

• (Boolean)

# File 'error.c', line 1871

static VALUE
nometh_err_private_call_p(VALUE self)
{
    return rb_attr_get(self, id_private_call_p);
}