go-conv | Fast conversions across various Go types with a simple API
kandi X-RAY | go-conv Summary
kandi X-RAY | go-conv Summary
All conversion functions accept any type of value for conversion, if unable to find a reasonable conversion path they will return the target types zero value and an error. Example: // The zero value and a non-nil error is returned on failure. fmt.Println(conv.Int("Foo")) // Conversions are allowed as long as the underlying type is convertable, for // example: type MyString string fmt.Println(conv.Int(MyString("42"))) // 42, nil // Pointers will be dereferenced when appropriate. str := "42" fmt.Println(conv.Int(&str)) // 42, nil // You may infer values from the base type of a pointer, giving you one // function signature for all conversions. This may be convenient when the // types are not known until runtime and reflection must be used. var val int err := conv.Infer(&val, `42`) fmt.Println(val, err) // 42, nil Output: 0 cannot convert "Foo" (type string) to int 42 42 42 .
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QUESTION
I intend to import exactly this package (subdirectory) to reuse its methods and types:
https://github.com/hemantasapkota/go-convexhull/tree/master/convexhull
Which is inside this repository:
https://github.com/hemantasapkota/go-convexhull
TriedI tried to import the whole repository:
...ANSWER
Answered 2021-Nov-17 at 07:33This worked:
QUESTION
ANSWER
Answered 2021-Aug-07 at 11:23In an SQL database system, NULL
is not equal to NULL
(usually NULL = NULL
returns NULL
), therefore if the fields are nullable, it means that the other field can be repeated an arbitrary number of times.
What we can do is implement three constraints: uniques on the two fields, uniqness on one field if the other is NULL
and vice-versa, so then the constraints look like:
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