Struct Proc

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pub struct Proc { /* private fields */ }
Expand description

Proc (works with Lambda as well)

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impl Proc

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pub fn call(&self, arguments: Vec<AnyObject>) -> AnyObject

Calls a proc with given arguments

§Examples
#[macro_use]
extern crate ruru;

use ruru::{Class, Object, Proc, RString};

class!(Greeter);

methods!(
    Greeter,
    itself,

    fn greet_rust_with(greeting_template: Proc) -> RString {
        let name = RString::new("Rust").to_any_object();
        let rendered_template = greeting_template.unwrap().call(vec![name]);

        rendered_template.try_convert_to::<RString>().unwrap()
    }
);

fn main() {
    Class::new("Greeter", None).define(|itself| {
        itself.def_self("greet_rust_with", greet_rust_with);
    });
}

Ruby:

class Greeter
  def self.greet_rust_with(greeting_template)
    greeting_template.call('Rust')
  end
end

greeting_template = -> (name) { "Hello, #{name}!" }

Greeter.greet_rust_with(greeting_template) # => "Hello, Rust!"

Trait Implementations§

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impl Debug for Proc

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl From<Value> for Proc

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fn from(value: Value) -> Self

Converts to this type from the input type.
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impl Object for Proc

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fn value(&self) -> Value

Returns internal value of current object. Read more
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fn class(&self) -> Class

Returns a class of current object. Read more
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fn singleton_class(&self) -> Class

Returns a singleton class of current object. Read more
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fn get_data<'a, T>(&'a self, wrapper: &'a dyn DataTypeWrapper<T>) -> &mut T

Gets a Rust structure that is wrapped into a Ruby object. Read more
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fn define<F: Fn(&mut Self)>(&mut self, f: F) -> &Self

Wraps calls to the object. Read more
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fn define_method<I: Object, O: Object>( &mut self, name: &str, callback: Callback<I, O>, )

Defines an instance method for the given class or object. Read more
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fn define_singleton_method<I: Object, O: Object>( &mut self, name: &str, callback: Callback<I, O>, )

Defines a class method for given class or singleton method for object. Read more
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fn def<I: Object, O: Object>(&mut self, name: &str, callback: Callback<I, O>)

An alias for define_method (similar to Ruby syntax def some_method).
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fn def_self<I: Object, O: Object>( &mut self, name: &str, callback: Callback<I, O>, )

An alias for define_singleton_method (similar to Ruby def self.some_method).
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fn send(&self, method: &str, arguments: Vec<AnyObject>) -> AnyObject

Calls a given method on an object similarly to Ruby Object#send method Read more
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fn respond_to(&self, method: &str) -> bool

Checks whether the object responds to given method Read more
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fn is_nil(&self) -> bool

Checks whether the object is nil Read more
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fn to_any_object(&self) -> AnyObject

Converts struct to AnyObject Read more
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fn instance_variable_get(&self, variable: &str) -> AnyObject

Gets an instance variable of object Read more
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fn instance_variable_set<T: Object>( &mut self, variable: &str, value: T, ) -> AnyObject

Sets an instance variable for object Read more
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fn is_frozen(&self) -> bool

Returns the freeze status of the object. Read more
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fn freeze(&mut self) -> Self

Prevents further modifications to the object. Read more
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unsafe fn to<T: Object>(&self) -> T

Unsafely casts current object to the specified Ruby type Read more
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fn try_convert_to<T: VerifiedObject>(&self) -> Result<T>

Safely casts current object to the specified Ruby type Read more
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fn ty(&self) -> ValueType

Determines the value type of the object Read more
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impl PartialEq for Proc

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fn eq(&self, other: &Proc) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl VerifiedObject for Proc

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fn is_correct_type<T: Object>(object: &T) -> bool

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fn error_message() -> &'static str

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impl StructuralPartialEq for Proc

Auto Trait Implementations§

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impl Freeze for Proc

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impl RefUnwindSafe for Proc

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impl Send for Proc

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impl Sync for Proc

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impl Unpin for Proc

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impl UnwindSafe for Proc

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.