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# DefEnumHelper
Define very powerful enum class.
## Installation
Add this line to your application's Gemfile:
```ruby
gem 'def_enum_helper'
```
And then execute:
$ bundle
Or install it yourself as:
$ gem install def_enum_helper
## Usage
```ruby
# 默认枚举从1开始递增
def_enum :YinYang, {YANG: "阳", YIN: "阴"}
puts YinYang::YANG # 1
puts YinYang::YIN # 2
y = YinYang[1]
puts y.index # 1
puts y.display # 阳
YinYang[:YANG] # same as YinYang[1]
YinYang["阳"] # same as YinYang[1]
YinYang.all # 所有枚举的struct array [#<struct index=1, display="阳">, # <struct index=2, display="阴">]
puts YinYang.count # 2
YinYang.each{|x| puts x} # <struct index=1, display="阳"> #<struct index=2, display="阴">
puts YinYang.to_hash_array # [{:index=>1, :display=>"阳"}, {:index=>2, :display=>"阴"}]
puts YingYang.to_json_array # [{"index":1,"display":"阳"},{"index":2,"display":"阴"}]
```
```ruby
# 自定义枚举整数值
def_enum_with_index(:DataOperationType,
[:INSERT, 3, '插入'],
[:UPDATE, 4, '修改'],
[:DELETE, 5, '删除'])
puts DataOperationType::INSERT # 3
```
```ruby
# 自定义枚举对象
CustomStruct = Struct.new(:index, :display, :short_name)
def_enum_struct_with_index(:Country,
{
CHINA: CustomStruct.new(1, '中华人民共和国', '中国'),
USA: CustomStruct.new(2, '美利坚合众国', '美国')
})
Country[:CHINA] # <struct CustomStruct index=1, display="中华人民共和国", short_name="中国">
```
### License
(MIT License) - Copyright (c) 2016 Charles Zhang
Version data entries
6 entries across 6 versions & 1 rubygems