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cconvert

cconvert(T,x)

Convert x to a value of type T, typically by calling convert(T,x)

In cases where x cannot be safely converted to T, unlike convert, cconvert may return an object of a type different from T, which however is suitable for unsafe_convert to handle.

Neither convert nor cconvert should take a Julia object and turn it into a Ptr.

Examples

1. Convert an integer to a float:

   julia> cconvert(Float64, 10)
   10.0

   This example converts the integer value 10 to a Float64.

2. Convert a string to an integer:

   julia> cconvert(Int, "123")
   123

   It converts the string "123" to an integer value.

3. Handle unsafe conversions:

   julia> cconvert(Float32, -1)
   -1.0f0

   In cases where the conversion from x to T is not safe, cconvert can return a value of a different type that can be handled by unsafe_convert.

Common mistake example:

julia> cconvert(Float64, "abc")
ERROR: MethodError: Cannot `cconvert` "abc" to Float64

In this example, the conversion from the string "abc" to Float64 is not possible, resulting in a MethodError. It's important to ensure that the conversion is valid and supported for the given types.

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