Enum sysctl::CtlValue

pub enum CtlValue {
    None,
    Node(Vec<u8>),
    Int(i32),
    String(String),
    S64(i64),
    Struct(Vec<u8>),
    Uint(u32),
    Long(i64),
    Ulong(u64),
    U64(u64),
    U8(u8),
    U16(u16),
    S8(i8),
    S16(i16),
    S32(i32),
    U32(u32),
}

An Enum that holds all values returned by sysctl calls. Extract inner value with accessors like as_int().

Example

if let Ok(ctl) = sysctl::Ctl::new("kern.osrevision") {
    if let Ok(r) = ctl.value() {
        if let Some(val) = r.as_int() {
            println!("Value: {}", val);
        }
    }
}

Variants

None

Node(Vec<u8>)

Int(i32)

String(String)

S64(i64)

Struct(Vec<u8>)

Uint(u32)

Long(i64)

Ulong(u64)

U64(u64)

U8(u8)

U16(u16)

S8(i8)

S16(i16)

S32(i32)

U32(u32)

Implementations

impl CtlValue

pub fn is_none(&self) -> bool

Returns true if this is a CtlValue::None, otherwise false

pub fn as_node_mut(&mut self) -> Option<&mut Vec<u8>>

Optionally returns mutable references to the inner fields if this is a CtlValue::Node, otherwise None

pub fn as_node(&self) -> Option<&Vec<u8>>

Optionally returns references to the inner fields if this is a CtlValue::Node, otherwise None

pub fn into_node(self) -> Result<Vec<u8>, Self>

Returns the inner fields if this is a CtlValue::Node, otherwise returns back the enum in the Err case of the result

pub fn as_int_mut(&mut self) -> Option<&mut i32>

Optionally returns mutable references to the inner fields if this is a CtlValue::Int, otherwise None

pub fn as_int(&self) -> Option<&i32>

Optionally returns references to the inner fields if this is a CtlValue::Int, otherwise None

pub fn into_int(self) -> Result<i32, Self>

Returns the inner fields if this is a CtlValue::Int, otherwise returns back the enum in the Err case of the result

pub fn as_string_mut(&mut self) -> Option<&mut String>

Optionally returns mutable references to the inner fields if this is a CtlValue::String, otherwise None

pub fn as_string(&self) -> Option<&String>

Optionally returns references to the inner fields if this is a CtlValue::String, otherwise None

pub fn into_string(self) -> Result<String, Self>

Returns the inner fields if this is a CtlValue::String, otherwise returns back the enum in the Err case of the result

pub fn as_s64_mut(&mut self) -> Option<&mut i64>

Optionally returns mutable references to the inner fields if this is a CtlValue::S64, otherwise None

pub fn as_s64(&self) -> Option<&i64>

Optionally returns references to the inner fields if this is a CtlValue::S64, otherwise None

pub fn into_s64(self) -> Result<i64, Self>

Returns the inner fields if this is a CtlValue::S64, otherwise returns back the enum in the Err case of the result

pub fn as_struct_mut(&mut self) -> Option<&mut Vec<u8>>

Optionally returns mutable references to the inner fields if this is a CtlValue::Struct, otherwise None

pub fn as_struct(&self) -> Option<&Vec<u8>>

Optionally returns references to the inner fields if this is a CtlValue::Struct, otherwise None

pub fn into_struct(self) -> Result<Vec<u8>, Self>

Returns the inner fields if this is a CtlValue::Struct, otherwise returns back the enum in the Err case of the result

pub fn as_uint_mut(&mut self) -> Option<&mut u32>

Optionally returns mutable references to the inner fields if this is a CtlValue::Uint, otherwise None

pub fn as_uint(&self) -> Option<&u32>

Optionally returns references to the inner fields if this is a CtlValue::Uint, otherwise None

pub fn into_uint(self) -> Result<u32, Self>

Returns the inner fields if this is a CtlValue::Uint, otherwise returns back the enum in the Err case of the result

pub fn as_long_mut(&mut self) -> Option<&mut i64>

Optionally returns mutable references to the inner fields if this is a CtlValue::Long, otherwise None

pub fn as_long(&self) -> Option<&i64>

Optionally returns references to the inner fields if this is a CtlValue::Long, otherwise None

pub fn into_long(self) -> Result<i64, Self>

Returns the inner fields if this is a CtlValue::Long, otherwise returns back the enum in the Err case of the result

pub fn as_ulong_mut(&mut self) -> Option<&mut u64>

Optionally returns mutable references to the inner fields if this is a CtlValue::Ulong, otherwise None

pub fn as_ulong(&self) -> Option<&u64>

Optionally returns references to the inner fields if this is a CtlValue::Ulong, otherwise None

pub fn into_ulong(self) -> Result<u64, Self>

Returns the inner fields if this is a CtlValue::Ulong, otherwise returns back the enum in the Err case of the result

pub fn as_u64_mut(&mut self) -> Option<&mut u64>

Optionally returns mutable references to the inner fields if this is a CtlValue::U64, otherwise None

pub fn as_u64(&self) -> Option<&u64>

Optionally returns references to the inner fields if this is a CtlValue::U64, otherwise None

pub fn into_u64(self) -> Result<u64, Self>

Returns the inner fields if this is a CtlValue::U64, otherwise returns back the enum in the Err case of the result

pub fn as_u8_mut(&mut self) -> Option<&mut u8>

Optionally returns mutable references to the inner fields if this is a CtlValue::U8, otherwise None

pub fn as_u8(&self) -> Option<&u8>

Optionally returns references to the inner fields if this is a CtlValue::U8, otherwise None

pub fn into_u8(self) -> Result<u8, Self>

Returns the inner fields if this is a CtlValue::U8, otherwise returns back the enum in the Err case of the result

pub fn as_u16_mut(&mut self) -> Option<&mut u16>

Optionally returns mutable references to the inner fields if this is a CtlValue::U16, otherwise None

pub fn as_u16(&self) -> Option<&u16>

Optionally returns references to the inner fields if this is a CtlValue::U16, otherwise None

pub fn into_u16(self) -> Result<u16, Self>

Returns the inner fields if this is a CtlValue::U16, otherwise returns back the enum in the Err case of the result

pub fn as_s8_mut(&mut self) -> Option<&mut i8>

Optionally returns mutable references to the inner fields if this is a CtlValue::S8, otherwise None

pub fn as_s8(&self) -> Option<&i8>

Optionally returns references to the inner fields if this is a CtlValue::S8, otherwise None

pub fn into_s8(self) -> Result<i8, Self>

Returns the inner fields if this is a CtlValue::S8, otherwise returns back the enum in the Err case of the result

pub fn as_s16_mut(&mut self) -> Option<&mut i16>

Optionally returns mutable references to the inner fields if this is a CtlValue::S16, otherwise None

pub fn as_s16(&self) -> Option<&i16>

Optionally returns references to the inner fields if this is a CtlValue::S16, otherwise None

pub fn into_s16(self) -> Result<i16, Self>

Returns the inner fields if this is a CtlValue::S16, otherwise returns back the enum in the Err case of the result

pub fn as_s32_mut(&mut self) -> Option<&mut i32>

Optionally returns mutable references to the inner fields if this is a CtlValue::S32, otherwise None

pub fn as_s32(&self) -> Option<&i32>

Optionally returns references to the inner fields if this is a CtlValue::S32, otherwise None

pub fn into_s32(self) -> Result<i32, Self>

Returns the inner fields if this is a CtlValue::S32, otherwise returns back the enum in the Err case of the result

pub fn as_u32_mut(&mut self) -> Option<&mut u32>

Optionally returns mutable references to the inner fields if this is a CtlValue::U32, otherwise None

pub fn as_u32(&self) -> Option<&u32>

Optionally returns references to the inner fields if this is a CtlValue::U32, otherwise None

pub fn into_u32(self) -> Result<u32, Self>

Returns the inner fields if this is a CtlValue::U32, otherwise returns back the enum in the Err case of the result

Trait Implementations

impl Debug for CtlValue

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

Formats the value using the given formatter.

impl Display for CtlValue

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

Formats the value using the given formatter.

impl From<&CtlValue> for CtlType

fn from(t: &CtlValue) -> Self

Converts to this type from the input type.

impl From<CtlValue> for CtlType

fn from(t: CtlValue) -> Self

Converts to this type from the input type.

impl PartialEq<CtlValue> for CtlValue

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

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<CtlValue> for CtlValue

fn partial_cmp(&self, other: &CtlValue) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for CtlValue