-
|
The example is a timestamp in seconds since unix epoch time. How can I use json.Number in a struct (unmarshaling and marshaling to float64)? |
Beta Was this translation helpful? Give feedback.
Replies: 1 comment 6 replies
-
|
I'm not clear on the question. Let me try to get some details. Give a struct that contains a json.Number you want the representation in a JSON string to be decimal only format and not scientific notation in the JSON. You also want to marshal and unmarshal the JSON into a float64 presumably into a different struct. Is that correct? |
Beta Was this translation helpful? Give feedback.
-
|
My main question is how to avoid scientific notation while marshaling float64 to json. I unmarshal one json string to a struct where big float is in a simple format (without exponent) e.g. 1695979657.74 but while marshaling the same struct to json I'm getting 1.69597965774e+09 in output string. I would prefer to get the number in the same non-scientific format. Second question was about using json.Number (e.g. if sometimes I get json number in quotes). As I understand json.Number is convenient in such situations. |
Beta Was this translation helpful? Give feedback.
-
|
Right now there is not an option on what format is used for floats. It is always 'g' (e.g., fmt.Sprintf("%g", num)). An option could be added to allow a user supplied format directive though. It would be a nice addition I think. When a number string in a JSON document is encountered an attempt is made to parse the number without a loss of precision. If the number is too large or small then a json.Number is created. |
Beta Was this translation helpful? Give feedback.
-
|
The current develop branch now has a ojg.Option.FloatFormat which can be used when writing floats. Not much I can do about the json.Number other than providing an option for something other than jsonNumber when a number is too large but that doesn't solve the json.Number output flexibility. |
Beta Was this translation helpful? Give feedback.
-
|
Thanks Peter for a quick answer. That's exactly what I need. BTW any plan for releasing it? |
Beta Was this translation helpful? Give feedback.
-
|
I want to improve the struct support in the ojg/jp package first. So maybe this coming week. |
Beta Was this translation helpful? Give feedback.
-
|
This feature was added in v1.20.0 on Oct 17th. |
Beta Was this translation helpful? Give feedback.
The current develop branch now has a ojg.Option.FloatFormat which can be used when writing floats. Not much I can do about the json.Number other than providing an option for something other than jsonNumber when a number is too large but that doesn't solve the json.Number output flexibility.