diff options
| -rw-r--r-- | NEWS | 5 | ||||
| -rw-r--r-- | struct.c | 26 |
2 files changed, 31 insertions, 0 deletions
@@ -52,6 +52,11 @@ with all sufficient information, see the ChangeLog file. * Signal.trap raises ArgumentError when :SEGV, :BUS, :ILL, :FPE, :VTALRM are specified. + * Struct + * added method: + * added Struct#to_h returning values with keys corresponding to the + instance variable names. + * Time * change return value: * Time#to_s returned encoding defaults to US-ASCII but automatically @@ -586,6 +586,31 @@ rb_struct_to_a(VALUE s) return rb_ary_new4(RSTRUCT_LEN(s), RSTRUCT_PTR(s)); } +/* + * call-seq: + * struct.to_h -> hash + * + * Returns the values for this instance as a hash with keys + * corresponding to the instance variable name. + * + * Customer = Struct.new(:name, :address, :zip) + * joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345) + * joe.to_h[:address] #=> "123 Maple, Anytown NC" + */ + +static VALUE +rb_struct_to_h(VALUE s) +{ + VALUE h = rb_hash_new(); + VALUE members = rb_struct_members(s); + long i; + + for (i=0; i<RSTRUCT_LEN(s); i++) { + rb_hash_aset(h, rb_ary_entry(members, i), RSTRUCT_PTR(s)[i]); + } + return h; +} + /* :nodoc: */ VALUE rb_struct_init_copy(VALUE copy, VALUE s) @@ -961,6 +986,7 @@ Init_Struct(void) rb_define_method(rb_cStruct, "inspect", rb_struct_inspect, 0); rb_define_alias(rb_cStruct, "to_s", "inspect"); rb_define_method(rb_cStruct, "to_a", rb_struct_to_a, 0); + rb_define_method(rb_cStruct, "to_h", rb_struct_to_h, 0); rb_define_method(rb_cStruct, "values", rb_struct_to_a, 0); rb_define_method(rb_cStruct, "size", rb_struct_size, 0); rb_define_method(rb_cStruct, "length", rb_struct_size, 0); |