How can I make a function to call RESTful api through NSURLSESSION that can be used on every controller in swift iOS i.e. singleton object for everywhere in app This is the Code I came up with. But as soon as i call the method it crashes cause till return statement the jsonresponse is empty.How can I make a function to call RESTful api t
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如何在swift iOS中使用nsurlsession来创建REST API的全局功能？
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