Added 5 more utility functions for errors and type manipulation #624
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samber
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Nov 5, 2025
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Please add a documentation in docs/docs/data/
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| // Converts any type to a given type based on their json representations. It partially fills the target in case they are not directly compatible. Any errors are ignored. | ||
| func CastJSON[T any](val any) T { | ||
| bytes, _ := json.Marshal(val) | ||
| return FromBytes[T](bytes) | ||
| } | ||
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| // Converts a byte array to a given type. Ignores any errors. | ||
| func FromBytes[T any](bytes []byte) T { | ||
| var v T | ||
| _ = json.Unmarshal(bytes, &v) | ||
| return v | ||
| } |
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I think it's not a good idea to bring such helper in lo. Also the naming is really bad.
| // Converts any type to a given type. If conversion fails, it returns the zero value of the given type. This is a type-safe version of type assertion. | ||
| // | ||
| // Cast enforces strict type assertion, for example trying to convert a number of 10 to float64 will return 0.0 instead of 10.0. | ||
| func Cast[T any](val any) T { |
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you can already do a := val.(A) (skipping the "ok")
so what is the use case for such helper?
| return t, ok | ||
| } | ||
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| // Ok returns the value and ignores the error. Use with caution and only when you don't care about the error. |
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I like the idea of both Ok and OkOr, but the method name does not seems "self-explaining" to me. Can you suggest other names ?
Anyway, we need to rename Ok to OkOrEmpty to match the convention of this library.
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Usage and purpose for the following functions are documented within the changes
Errors:
Type Manipulation: