[−][src]Struct rutie::Hash
Hash
Methods
impl Hash
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pub fn new() -> Self
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pub fn at<T: Object>(&self, key: &T) -> AnyObject
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Retrieves an AnyObject
from element stored at key
key.
Examples
use rutie::{Fixnum, Hash, Object, Symbol, VM}; let mut hash = Hash::new(); hash.store(Symbol::new("key"), Fixnum::new(1)); assert_eq!(hash.at(&Symbol::new("key")).try_convert_to::<Fixnum>(), Ok(Fixnum::new(1)));
Ruby:
hash = {}
hash[:key] = 1
hash[:key] == 1
pub fn store<K: Object, V: Object>(&mut self, key: K, value: V) -> AnyObject
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Associates the value
with the key
.
Both key
and value
must be types which implement Object
trait.
Examples
use rutie::{Fixnum, Hash, Object, Symbol, VM}; let mut hash = Hash::new(); hash.store(Symbol::new("key"), Fixnum::new(1)); assert_eq!(hash.at(&Symbol::new("key")).try_convert_to::<Fixnum>(), Ok(Fixnum::new(1)));
Ruby:
hash = {}
hash[:key] = 1
hash[:key] == 1
pub fn length(&self) -> usize
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Retrieves the length of the hash.
Examples
use rutie::{Hash, Fixnum, Symbol, VM}; let mut hash = Hash::new(); hash.store(Symbol::new("key1"), Fixnum::new(1)); assert_eq!(hash.length(), 1); hash.store(Symbol::new("key2"), Fixnum::new(2)); assert_eq!(hash.length(), 2);
Ruby:
hash = {}
hash[:key1] = 1
hash.length == 1
hash[:key2] = 2
hash.length == 2
pub fn clear(&self)
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Removes all key-value pairs.
Examples
use rutie::{Hash, Fixnum, Symbol, VM}; let mut hash = Hash::new(); hash.store(Symbol::new("key1"), Fixnum::new(1)); hash.store(Symbol::new("key2"), Fixnum::new(2)); assert_eq!(hash.length(), 2); hash.clear(); assert_eq!(hash.length(), 0);
Ruby:
hash = {}
hash[:key1] = 1
hash[:key2] = 2
hash.length == 2
hash.clear
hash.length == 0
pub fn delete<K: Object>(&mut self, key: K) -> AnyObject
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Deletes the key-value pair and returns the value from hash whose key is equal to key. If the key is not found, it returns nil.
key
must be a type which implements the Object
trait.
Examples
use rutie::{Fixnum, Hash, Object, Symbol, VM}; let mut hash = Hash::new(); hash.store(Symbol::new("key1"), Fixnum::new(1)); hash.store(Symbol::new("key2"), Fixnum::new(2)); assert_eq!(hash.length(), 2); let deleted = hash.delete(Symbol::new("key2")); assert_eq!(hash.length(), 1); assert_eq!(deleted.try_convert_to::<Fixnum>(), Ok(Fixnum::new(2)));
Ruby:
hash = {}
hash[:key1] = 1
hash[:key2] = 2
hash.length == 2
deleted = hash.delete(:key2)
hash.length == 1
deleted == 2
pub fn each<F>(&self, closure: F) where
F: FnMut(AnyObject, AnyObject),
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F: FnMut(AnyObject, AnyObject),
Runs a closure for each key
and value
pair.
Key and value have AnyObject
type.
Examples
use rutie::{Fixnum, Hash, Object, Symbol, VM}; let mut hash = Hash::new(); hash.store(Symbol::new("first_key"), Fixnum::new(1)); hash.store(Symbol::new("second_key"), Fixnum::new(2)); let mut doubled_values: Vec<i64> = Vec::new(); hash.each(|_key, value| { if let Ok(value) = value.try_convert_to::<Fixnum>() { doubled_values.push(value.to_i64() * 2); } }); assert_eq!(doubled_values, vec![2, 4]);
Ruby:
hash = {
first_key: 1,
second_key: 2
}
doubled_values = []
hash.each do |_key, value|
doubled_values << [value * 2]
end
doubled_values == [2, 4]
Trait Implementations
impl Object for Hash
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fn value(&self) -> Value
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fn class(&self) -> Class
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Returns a class of current object. Read more
fn singleton_class(&self) -> Class
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Returns a singleton class of current object. Read more
fn get_data<'a, T>(&'a self, wrapper: &'a dyn DataTypeWrapper<T>) -> &T
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Gets an immutable reference to the Rust structure which is wrapped into a Ruby object. Read more
fn get_data_mut<'a, T>(
&'a mut self,
wrapper: &'a dyn DataTypeWrapper<T>
) -> &mut T
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&'a mut self,
wrapper: &'a dyn DataTypeWrapper<T>
) -> &mut T
Gets a mutable reference to the Rust structure which is wrapped into a Ruby object.
fn define<F: Fn(&mut Self)>(&mut self, f: F) -> &Self
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Wraps calls to the object. Read more
fn define_method<I: Object, O: Object>(
&mut self,
name: &str,
callback: Callback<I, O>
)
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&mut self,
name: &str,
callback: Callback<I, O>
)
Defines an instance method for the given class or object. Read more
fn define_private_method<I: Object, O: Object>(
&mut self,
name: &str,
callback: Callback<I, O>
)
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&mut self,
name: &str,
callback: Callback<I, O>
)
Defines a private instance method for the given class or object. Read more
fn define_singleton_method<I: Object, O: Object>(
&mut self,
name: &str,
callback: Callback<I, O>
)
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&mut self,
name: &str,
callback: Callback<I, O>
)
Defines a class method for given class or singleton method for object. Read more
fn def<I: Object, O: Object>(&mut self, name: &str, callback: Callback<I, O>)
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An alias for define_method
(similar to Ruby syntax def some_method
).
fn def_private<I: Object, O: Object>(
&mut self,
name: &str,
callback: Callback<I, O>
)
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&mut self,
name: &str,
callback: Callback<I, O>
)
An alias for define_private_method
(similar to Ruby syntax private def some_method
).
fn def_self<I: Object, O: Object>(
&mut self,
name: &str,
callback: Callback<I, O>
)
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&mut self,
name: &str,
callback: Callback<I, O>
)
An alias for define_singleton_method
(similar to Ruby def self.some_method
).
unsafe fn send(&self, method: &str, arguments: &[AnyObject]) -> AnyObject
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Calls a given method on an object similarly to Ruby Object#send
method Read more
fn equals<T: Object>(&self, other: &T) -> bool
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Alias for Ruby's ==
Read more
fn case_equals<T: Object>(&self, other: &T) -> bool
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Alias for Ruby's ===
Read more
fn is_eql<T: Object>(&self, other: &T) -> bool
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Alias for Ruby's eql?
Read more
fn is_equal<T: Object>(&self, other: &T) -> bool
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Alias for Ruby's equal?
Read more
fn respond_to(&self, method: &str) -> bool
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Checks whether the object responds to given method Read more
fn protect_send(
&self,
method: &str,
arguments: &[AnyObject]
) -> Result<AnyObject, AnyException>
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&self,
method: &str,
arguments: &[AnyObject]
) -> Result<AnyObject, AnyException>
protect_send
returns Result<AnyObject, AnyObject> Read more
fn protect_public_send(
&self,
method: &str,
arguments: &[AnyObject]
) -> Result<AnyObject, AnyException>
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&self,
method: &str,
arguments: &[AnyObject]
) -> Result<AnyObject, AnyException>
protect_public_send
returns Result<AnyObject, AnyObject> Read more
fn is_nil(&self) -> bool
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Checks whether the object is nil
Read more
fn to_any_object(&self) -> AnyObject
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Converts struct to AnyObject
Read more
fn instance_variable_get(&self, variable: &str) -> AnyObject
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Gets an instance variable of object Read more
fn instance_variable_set<T: Object>(
&mut self,
variable: &str,
value: T
) -> AnyObject
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&mut self,
variable: &str,
value: T
) -> AnyObject
Sets an instance variable for object Read more
fn is_frozen(&self) -> bool
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Returns the freeze status of the object. Read more
fn freeze(&mut self) -> Self
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Prevents further modifications to the object. Read more
unsafe fn to<T: Object>(&self) -> T
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Unsafely casts current object to the specified Ruby type Read more
fn try_convert_to<T: VerifiedObject>(&self) -> Result<T, AnyException>
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Safely casts current object to the specified Ruby type Read more
fn ty(&self) -> ValueType
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Determines the value type of the object Read more
impl VerifiedObject for Hash
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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 From<Value> for Hash
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impl Into<Value> for Hash
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impl Into<AnyObject> for Hash
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impl Default for Hash
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impl Clone for Hash
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fn clone(&self) -> Hash
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fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl PartialEq<Hash> for Hash
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fn eq(&self, other: &Self) -> bool
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#[must_use]
fn ne(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests for !=
.
impl Debug for Hash
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Auto Trait Implementations
impl Unpin for Hash
impl Send for Hash
impl Sync for Hash
impl RefUnwindSafe for Hash
impl UnwindSafe for Hash
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,