Enum Polarity 

pub enum Polarity {
    Positive,
    Negative,
}

Ion polarity: which way the charge-carrying adduct shifts m/z, and so which way to undo it when recovering a neutral mass.

Positive mode (protonation, M + zH) is the default and covers peptides. Nucleic acids are run in negative mode (deprotonation, M − zH), where subtracting the protons instead of adding them mis-masses every feature by 2·z·1.00728 Da — 8 Da on a 4-charged oligonucleotide.

Variants

Positive

M + zH: neutral mass = mz·z − z·proton.

Negative

M − zH: neutral mass = mz·z + z·proton.

Implementations

impl Polarity

pub fn neutral_mass(&self, mz: f64, charge: u8) -> f64

Neutral mass of an ion at mz carrying charge adducts of this polarity.

Trait Implementations

impl Clone for Polarity

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Polarity

impl Debug for Polarity

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

Formats the value using the given formatter.

impl Default for Polarity

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Polarity

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Polarity

impl PartialEq for Polarity

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Polarity

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Polarity