Re: Checking if a string is valid JSON

On Jan 29, 2018, at 13:30 , Saagar Jha wrote: > > Uhh…JSONDecoder swallows all of JSONSerialization’s errors and wraps it into > its own > . > I’m not sure this co

Re: Checking if a string is valid JSON

Saagar Jha > On Jan 29, 2018, at 13:25, Quincey Morris > wrote: > > On Jan 29, 2018, at 12:42 , Eric E. Dolecki wrote: >> >> So this would do it? > > I would strongly recommend using JSONDecoder instead of JSONSerialization. > The errors JSONDecoder throws are AFAIK more detailed than JSON

Re: Checking if a string is valid JSON

On Jan 29, 2018, at 12:42 , Eric E. Dolecki wrote: > > So this would do it? I would strongly recommend using JSONDecoder instead of JSONSerialization. The errors JSONDecoder throws are AFAIK more detailed than JSONSerialization, and will tell you the exact location in the string of any error y

Re: Checking if a string is valid JSON

> On Jan 29, 2018, at 12:17 PM, Eric E. Dolecki wrote: > > I am generating a String of JSON. Before I use it, I want to check to make > sure that it's valid. Is there a reason you need to generate the JSON by hand, instead of creating a Dictionary or Array and letting NSJSONSerialization enc

Re: Checking if a string is valid JSON

Cool - thanks. So this would do it? let jsonString = composedString let jsonData = jsonString.data(using: String.Encoding.utf8) do { _ = try JSONSerialization.jsonObject(with: jsonData!) print("json seems okay.") } catch {

Re: Checking if a string is valid JSON

I believe jsonObject(with:options) will throw if the JSON is invalid, so you might be able to get away with just the try/catch. Besides, your JSON top level object might be an array, in which case I’d expect that casting to an NSDictionary would fail. Saagar Jha > On Jan 29, 2018, at 12:17, Er

Checking if a string is valid JSON

I am generating a String of JSON. Before I use it, I want to check to make sure that it's valid. My code is below. Does this look alright? Thanks, Eric let jsonString = composedString let jsonData = jsonString.data(using: String.Encoding.utf8) do { if (try