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An external value is the runtime representation of an entity
that can be imported or exported.
Get underlying function reference if this ExternVal
contains
a function, or None
if it is some other kind.
Get underlying table reference if this ExternVal
contains
a table, or None
if it is some other kind.
Get underlying memory reference if this ExternVal
contains
a memory, or None
if it is some other kind.
Get underlying global variable reference if this ExternVal
contains
a global, or None
if it is some other kind.
Performs copy-assignment from
source
.
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Formats the value using the given formatter.
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Immutably borrows from an owned value.
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Mutably borrows from an owned value.
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Returns the argument unchanged.
Calls U::from(self)
.
That is, this conversion is whatever the implementation of
From<T> for U
chooses to do.
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning.
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Uses borrowed data to replace owned data, usually by cloning.
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The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.