Trait glib::value::FromValueOptional

pub trait FromValueOptional<'a>: StaticType + Sized {
    unsafe fn from_value_optional(_: &'a Value) -> Option<Self>;
}

Extracts a value.

Types that don’t support a None value always return Some.

Required Methods

unsafe fn from_value_optional(_: &'a Value) -> Option<Self>

Implementations on Foreign Types

impl<'a> FromValueOptional<'a> for String

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for &'a str

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for Vec<String>

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for bool

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for i8

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for u8

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for i32

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for u32

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for i64

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for u64

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for f32

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

impl<'a> FromValueOptional<'a> for f64

unsafe fn from_value_optional(value: &'a Value) -> Option<Self>

Implementors

impl<'a> FromValueOptional<'a> for &'a VariantTy

impl<'a> FromValueOptional<'a> for &'a AnySendValue

impl<'a> FromValueOptional<'a> for &'a AnyValue

impl<'a> FromValueOptional<'a> for Type

impl<'a> FromValueOptional<'a> for BindingFlags

impl<'a> FromValueOptional<'a> for IOCondition

impl<'a> FromValueOptional<'a> for VariantType