Method: Warning.[]

Defined in:
error.c

.[](category) ⇒ Boolean

Returns the flag to show the warning messages for category. Supported categories are:

:deprecated

deprecation warnings

  • assignment of non-nil value to $, and $;

  • keyword arguments

  • proc/lambda without block

etc.

:experimental

experimental features

  • Pattern matching

Returns:

  • (Boolean)
[View source]

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# File 'error.c', line 204

static VALUE
rb_warning_s_aref(VALUE mod, VALUE category)
{
    rb_warning_category_t cat = rb_warning_category_from_name(category);
    if (rb_warning_category_enabled_p(cat))
        return Qtrue;
    return Qfalse;
}