{"description":"If you are software developer, you often implement the object which generated by some other event. But when I represent such objects on Alloy, I always make a mistake. Why? Now I've got the reason. Here it is.Modeling a \"login page\".Generally, authentication in web application uses some session syst\u2026","version":"1.0","provider_name":"Hatena Blog","blog_url":"https://nowavailable.hatenablog.com/","type":"rich","published":"2015-06-15 07:35:41","author_name":"nowavailable","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnowavailable.hatenablog.com%2Fentry%2F20150615%2F1434321341\" title=\"Learning Alloy: How to Define Objects Generated by Events - \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u306e\u3072\u307f\u3064\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/nowavailable/","width":"100%","categories":["Alloy Analyzer"],"title":"Learning Alloy: How to Define Objects Generated by Events","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/n/nowavailable/20150607/20150607192847.png","blog_title":"\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u306e\u3072\u307f\u3064","url":"https://nowavailable.hatenablog.com/entry/20150615/1434321341"}