CODEWITHSUNDEEP
iosjsonswiftstring
Raymond
Raymond

Reputation: 1258

Cannot invoke 'append' with an argument list of type '(String)'

I'm constructing multipart form-data request. I'm getting build error for append statements 

var dataBody = Data() 
dataBody.append("--\(boundary + lineBreak)") //Error

Error: Cannot invoke 'append' with an argument list of type '(String)'

It's weird as this works in other project. Am I missing something? How to fix this issue?

Upvotes: 0

Views: 53

Answers (1)

Shehata Gamal
Shehata Gamal

Reputation: 100523

You're trying to append a string to a Data object which won't compile , you need to convert this string first to Data with proper encoding .utf8 here like this 

var dataBody = Data() 
let str = "--\(boundary + lineBreak)"
dataBody.append(Data(str.utf8))

Upvotes: 3

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