how to loop through structs?

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I'm fetching data from coinDesk API to get bitcoin rate related to other currencies, I've created 3 structs to save this data, but it's not possible to loop through the struct to know how many items I have there...

that's my structure:

struct Response: Codable {

    var bpi: currencies

}



struct currencies: Codable {

    var USD: info

    var GBP: info

    var EUR: info

}



struct info: Codable {

    var code: String

    var symbol: String

    var description: String

    var rate_float: Float

}

To save the data from API I just use:

let jsonData = try JSONDecoder().decode(Response.self, from: data)

It saves the data with no error but, when I try to loop through this data to populate tableViewCells it doesn't work.

what I'm doing know is...

let euro = jsonData.bpi.EUR

let dollar = jsonData.bpi.USD

let gbp = jsonData.bpi.GBP



let infos = [euro,dollar,gbp]



completion(infos)

This is sending the data to my UITableView and populating, but what if I had 500 currencies? it would not be practical at all.. how could I do this in a more effective way?

Thank you in advance for the answers.

edited Nov 23 '18 at 20:16

Nilanshu

5361619

asked Nov 23 '18 at 17:08

Lucas

11016

add a comment |

that's my structure:

struct Response: Codable {

    var bpi: currencies

}



struct currencies: Codable {

    var USD: info

    var GBP: info

    var EUR: info

}



struct info: Codable {

    var code: String

    var symbol: String

    var description: String

    var rate_float: Float

}

To save the data from API I just use:

let jsonData = try JSONDecoder().decode(Response.self, from: data)

It saves the data with no error but, when I try to loop through this data to populate tableViewCells it doesn't work.

what I'm doing know is...

let euro = jsonData.bpi.EUR

let dollar = jsonData.bpi.USD

let gbp = jsonData.bpi.GBP



let infos = [euro,dollar,gbp]



completion(infos)

This is sending the data to my UITableView and populating, but what if I had 500 currencies? it would not be practical at all.. how could I do this in a more effective way?

Thank you in advance for the answers.

edited Nov 23 '18 at 20:16

Nilanshu

5361619

asked Nov 23 '18 at 17:08

Lucas

11016

add a comment |

that's my structure:

struct Response: Codable {

    var bpi: currencies

}



struct currencies: Codable {

    var USD: info

    var GBP: info

    var EUR: info

}



struct info: Codable {

    var code: String

    var symbol: String

    var description: String

    var rate_float: Float

}

To save the data from API I just use:

let jsonData = try JSONDecoder().decode(Response.self, from: data)

It saves the data with no error but, when I try to loop through this data to populate tableViewCells it doesn't work.

what I'm doing know is...

let euro = jsonData.bpi.EUR

let dollar = jsonData.bpi.USD

let gbp = jsonData.bpi.GBP



let infos = [euro,dollar,gbp]



completion(infos)

This is sending the data to my UITableView and populating, but what if I had 500 currencies? it would not be practical at all.. how could I do this in a more effective way?

Thank you in advance for the answers.

edited Nov 23 '18 at 20:16

Nilanshu

5361619

asked Nov 23 '18 at 17:08

Lucas

11016

that's my structure:

struct Response: Codable {

    var bpi: currencies

}



struct currencies: Codable {

    var USD: info

    var GBP: info

    var EUR: info

}



struct info: Codable {

    var code: String

    var symbol: String

    var description: String

    var rate_float: Float

}

To save the data from API I just use:

let jsonData = try JSONDecoder().decode(Response.self, from: data)

It saves the data with no error but, when I try to loop through this data to populate tableViewCells it doesn't work.

what I'm doing know is...

let euro = jsonData.bpi.EUR

let dollar = jsonData.bpi.USD

let gbp = jsonData.bpi.GBP



let infos = [euro,dollar,gbp]



completion(infos)

This is sending the data to my UITableView and populating, but what if I had 500 currencies? it would not be practical at all.. how could I do this in a more effective way?

Thank you in advance for the answers.

json swift struct

edited Nov 23 '18 at 20:16

Nilanshu

5361619

asked Nov 23 '18 at 17:08

Lucas

11016

edited Nov 23 '18 at 20:16

Nilanshu

5361619

asked Nov 23 '18 at 17:08

Lucas

11016

edited Nov 23 '18 at 20:16

Nilanshu

5361619

edited Nov 23 '18 at 20:16

Nilanshu

5361619

edited Nov 23 '18 at 20:16

Nilanshu

5361619

asked Nov 23 '18 at 17:08

Lucas

11016

asked Nov 23 '18 at 17:08

Lucas

11016

asked Nov 23 '18 at 17:08

Lucas

11016

add a comment |

1 Answer
1

active

oldest

votes

Don't put keys instead

struct Response: Codable {

  let bpi: [String:Info]

}



struct Info: Codable {

  let code: String

  let symbol: String

  let description: String

  let rate_float: Float

}

Then

let jsonData = try JSONDecoder().decode(Response.self, from: data)

print(jsonData.bpi["USD"])

so for all keys

let keys = Array(jsonData.bpi.keys)

let values = Array(jsonData.bpi.values)

edited Nov 23 '18 at 17:21

answered Nov 23 '18 at 17:10

Sh_Khan

48k51434

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

Don't put keys instead

struct Response: Codable {

  let bpi: [String:Info]

}



struct Info: Codable {

  let code: String

  let symbol: String

  let description: String

  let rate_float: Float

}

Then

let jsonData = try JSONDecoder().decode(Response.self, from: data)

print(jsonData.bpi["USD"])

so for all keys

let keys = Array(jsonData.bpi.keys)

let values = Array(jsonData.bpi.values)

edited Nov 23 '18 at 17:21

answered Nov 23 '18 at 17:10

Sh_Khan

48k51434

add a comment |

Don't put keys instead

struct Response: Codable {

  let bpi: [String:Info]

}



struct Info: Codable {

  let code: String

  let symbol: String

  let description: String

  let rate_float: Float

}

Then

let jsonData = try JSONDecoder().decode(Response.self, from: data)

print(jsonData.bpi["USD"])

so for all keys

let keys = Array(jsonData.bpi.keys)

let values = Array(jsonData.bpi.values)

edited Nov 23 '18 at 17:21

answered Nov 23 '18 at 17:10

Sh_Khan

48k51434

add a comment |

Don't put keys instead

struct Response: Codable {

  let bpi: [String:Info]

}



struct Info: Codable {

  let code: String

  let symbol: String

  let description: String

  let rate_float: Float

}

Then

let jsonData = try JSONDecoder().decode(Response.self, from: data)

print(jsonData.bpi["USD"])

so for all keys

let keys = Array(jsonData.bpi.keys)

let values = Array(jsonData.bpi.values)

edited Nov 23 '18 at 17:21

answered Nov 23 '18 at 17:10

Sh_Khan

48k51434

Don't put keys instead

struct Response: Codable {

  let bpi: [String:Info]

}



struct Info: Codable {

  let code: String

  let symbol: String

  let description: String

  let rate_float: Float

}

Then

let jsonData = try JSONDecoder().decode(Response.self, from: data)

print(jsonData.bpi["USD"])

so for all keys

let keys = Array(jsonData.bpi.keys)

let values = Array(jsonData.bpi.values)

edited Nov 23 '18 at 17:21

answered Nov 23 '18 at 17:10

Sh_Khan

48k51434

edited Nov 23 '18 at 17:21

answered Nov 23 '18 at 17:10

Sh_Khan

48k51434

answered Nov 23 '18 at 17:10

Sh_Khan

48k51434

answered Nov 23 '18 at 17:10

Sh_Khan

48k51434

add a comment |

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