Struct quick_csv::columns::Columns
[−]
[src]
pub struct Columns<'a> { /* fields omitted */ }
&str iterator on columns
Methods
impl<'a> Columns<'a>
[src]
fn new(line: &'a str, cols: &'a [usize]) -> Columns<'a>
Creates a new Columns iterator
fn decode<T: Decodable>(&mut self) -> Result<T>
Deserializes a Columns iterator into any Decodable type
Trait Implementations
impl<'a> Iterator for Columns<'a>
[src]
type Item = &'a str
The type of the elements being iterated over.
fn next(&mut self) -> Option<&'a str>
Advances the iterator and returns the next value. Read more
fn size_hint(&self) -> (usize, Option<usize>)
Returns the bounds on the remaining length of the iterator. Read more
fn count(self) -> usize
1.0.0
Consumes the iterator, counting the number of iterations and returning it. Read more
fn last(self) -> Option<Self::Item>
1.0.0
Consumes the iterator, returning the last element. Read more
fn nth(&mut self, n: usize) -> Option<Self::Item>
1.0.0
Returns the n
th element of the iterator. Read more
fn step_by(self, step: usize) -> StepBy<Self>
🔬 This is a nightly-only experimental API. (iterator_step_by
)
unstable replacement of Range::step_by
Creates an iterator starting at the same point, but stepping by the given amount at each iteration. Read more
fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter> where
U: IntoIterator<Item = Self::Item>,
1.0.0
U: IntoIterator<Item = Self::Item>,
Takes two iterators and creates a new iterator over both in sequence. Read more
fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter> where
U: IntoIterator,
1.0.0
U: IntoIterator,
'Zips up' two iterators into a single iterator of pairs. Read more
fn map<B, F>(self, f: F) -> Map<Self, F> where
F: FnMut(Self::Item) -> B,
1.0.0
F: FnMut(Self::Item) -> B,
Takes a closure and creates an iterator which calls that closure on each element. Read more
fn filter<P>(self, predicate: P) -> Filter<Self, P> where
P: FnMut(&Self::Item) -> bool,
1.0.0
P: FnMut(&Self::Item) -> bool,
Creates an iterator which uses a closure to determine if an element should be yielded. Read more
fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F> where
F: FnMut(Self::Item) -> Option<B>,
1.0.0
F: FnMut(Self::Item) -> Option<B>,
Creates an iterator that both filters and maps. Read more
fn enumerate(self) -> Enumerate<Self>
1.0.0
Creates an iterator which gives the current iteration count as well as the next value. Read more
fn peekable(self) -> Peekable<Self>
1.0.0
Creates an iterator which can use peek
to look at the next element of the iterator without consuming it. Read more
fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P> where
P: FnMut(&Self::Item) -> bool,
1.0.0
P: FnMut(&Self::Item) -> bool,
Creates an iterator that [skip
]s elements based on a predicate. Read more
fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where
P: FnMut(&Self::Item) -> bool,
1.0.0
P: FnMut(&Self::Item) -> bool,
Creates an iterator that yields elements based on a predicate. Read more
fn skip(self, n: usize) -> Skip<Self>
1.0.0
Creates an iterator that skips the first n
elements. Read more
fn take(self, n: usize) -> Take<Self>
1.0.0
Creates an iterator that yields its first n
elements. Read more
fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F> where
F: FnMut(&mut St, Self::Item) -> Option<B>,
1.0.0
F: FnMut(&mut St, Self::Item) -> Option<B>,
An iterator adaptor similar to [fold
] that holds internal state and produces a new iterator. Read more
fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
F: FnMut(Self::Item) -> U,
U: IntoIterator,
1.0.0
F: FnMut(Self::Item) -> U,
U: IntoIterator,
Creates an iterator that works like map, but flattens nested structure. Read more
fn fuse(self) -> Fuse<Self>
1.0.0
Creates an iterator which ends after the first [None
]. Read more
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnMut(&Self::Item) -> (),
1.0.0
F: FnMut(&Self::Item) -> (),
Do something with each element of an iterator, passing the value on. Read more
fn by_ref(&mut self) -> &mut Self
1.0.0
Borrows an iterator, rather than consuming it. Read more
fn collect<B>(self) -> B where
B: FromIterator<Self::Item>,
1.0.0
B: FromIterator<Self::Item>,
Transforms an iterator into a collection. Read more
fn partition<B, F>(self, f: F) -> (B, B) where
B: Default + Extend<Self::Item>,
F: FnMut(&Self::Item) -> bool,
1.0.0
B: Default + Extend<Self::Item>,
F: FnMut(&Self::Item) -> bool,
Consumes an iterator, creating two collections from it. Read more
fn fold<B, F>(self, init: B, f: F) -> B where
F: FnMut(B, Self::Item) -> B,
1.0.0
F: FnMut(B, Self::Item) -> B,
An iterator adaptor that applies a function, producing a single, final value. Read more
fn all<F>(&mut self, f: F) -> bool where
F: FnMut(Self::Item) -> bool,
1.0.0
F: FnMut(Self::Item) -> bool,
Tests if every element of the iterator matches a predicate. Read more
fn any<F>(&mut self, f: F) -> bool where
F: FnMut(Self::Item) -> bool,
1.0.0
F: FnMut(Self::Item) -> bool,
Tests if any element of the iterator matches a predicate. Read more
fn find<P>(&mut self, predicate: P) -> Option<Self::Item> where
P: FnMut(&Self::Item) -> bool,
1.0.0
P: FnMut(&Self::Item) -> bool,
Searches for an element of an iterator that satisfies a predicate. Read more
fn position<P>(&mut self, predicate: P) -> Option<usize> where
P: FnMut(Self::Item) -> bool,
1.0.0
P: FnMut(Self::Item) -> bool,
Searches for an element in an iterator, returning its index. Read more
fn rposition<P>(&mut self, predicate: P) -> Option<usize> where
P: FnMut(Self::Item) -> bool,
Self: ExactSizeIterator + DoubleEndedIterator,
1.0.0
P: FnMut(Self::Item) -> bool,
Self: ExactSizeIterator + DoubleEndedIterator,
Searches for an element in an iterator from the right, returning its index. Read more
fn max(self) -> Option<Self::Item> where
Self::Item: Ord,
1.0.0
Self::Item: Ord,
Returns the maximum element of an iterator. Read more
fn min(self) -> Option<Self::Item> where
Self::Item: Ord,
1.0.0
Self::Item: Ord,
Returns the minimum element of an iterator. Read more
fn max_by_key<B, F>(self, f: F) -> Option<Self::Item> where
B: Ord,
F: FnMut(&Self::Item) -> B,
1.6.0
B: Ord,
F: FnMut(&Self::Item) -> B,
Returns the element that gives the maximum value from the specified function. Read more
fn max_by<F>(self, compare: F) -> Option<Self::Item> where
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
1.15.0
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
Returns the element that gives the maximum value with respect to the specified comparison function. Read more
fn min_by_key<B, F>(self, f: F) -> Option<Self::Item> where
B: Ord,
F: FnMut(&Self::Item) -> B,
1.6.0
B: Ord,
F: FnMut(&Self::Item) -> B,
Returns the element that gives the minimum value from the specified function. Read more
fn min_by<F>(self, compare: F) -> Option<Self::Item> where
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
1.15.0
F: FnMut(&Self::Item, &Self::Item) -> Ordering,
Returns the element that gives the minimum value with respect to the specified comparison function. Read more
fn rev(self) -> Rev<Self> where
Self: DoubleEndedIterator,
1.0.0
Self: DoubleEndedIterator,
Reverses an iterator's direction. Read more
fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB) where
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
Self: Iterator<Item = (A, B)>,
1.0.0
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
Self: Iterator<Item = (A, B)>,
Converts an iterator of pairs into a pair of containers. Read more
fn cloned<'a, T>(self) -> Cloned<Self> where
Self: Iterator<Item = &'a T>,
T: 'a + Clone,
1.0.0
Self: Iterator<Item = &'a T>,
T: 'a + Clone,
Creates an iterator which [clone
]s all of its elements. Read more
fn cycle(self) -> Cycle<Self> where
Self: Clone,
1.0.0
Self: Clone,
Repeats an iterator endlessly. Read more
fn sum<S>(self) -> S where
S: Sum<Self::Item>,
1.11.0
S: Sum<Self::Item>,
Sums the elements of an iterator. Read more
fn product<P>(self) -> P where
P: Product<Self::Item>,
1.11.0
P: Product<Self::Item>,
Iterates over the entire iterator, multiplying all the elements Read more
fn cmp<I>(self, other: I) -> Ordering where
I: IntoIterator<Item = Self::Item>,
Self::Item: Ord,
1.5.0
I: IntoIterator<Item = Self::Item>,
Self::Item: Ord,
Lexicographically compares the elements of this Iterator
with those of another. Read more
fn partial_cmp<I>(self, other: I) -> Option<Ordering> where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Lexicographically compares the elements of this Iterator
with those of another. Read more
fn eq<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are equal to those of another. Read more
fn ne<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialEq<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are unequal to those of another. Read more
fn lt<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically less than those of another. Read more
fn le<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically less or equal to those of another. Read more
fn gt<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically greater than those of another. Read more
fn ge<I>(self, other: I) -> bool where
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
1.5.0
I: IntoIterator,
Self::Item: PartialOrd<<I as IntoIterator>::Item>,
Determines if the elements of this Iterator
are lexicographically greater than or equal to those of another. Read more
impl<'a> ExactSizeIterator for Columns<'a>
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fn len(&self) -> usize
Returns the exact number of times the iterator will iterate. Read more
fn is_empty(&self) -> bool
exact_size_is_empty
)Returns whether the iterator is empty. Read more
impl<'a> Decoder for Columns<'a>
[src]
type Error = Error
The error type for method results.
fn error(&mut self, err: &str) -> Error
Record a decoding error. Read more
fn read_nil(&mut self) -> Result<()>
Read a nil value.
fn read_usize(&mut self) -> Result<usize>
Read a usize value.
fn read_u64(&mut self) -> Result<u64>
Read a u64 value.
fn read_u32(&mut self) -> Result<u32>
Read a u32 value.
fn read_u16(&mut self) -> Result<u16>
Read a u16 value.
fn read_u8(&mut self) -> Result<u8>
Read a u8 value.
fn read_isize(&mut self) -> Result<isize>
Read a isize value.
fn read_i64(&mut self) -> Result<i64>
Read a i64 value.
fn read_i32(&mut self) -> Result<i32>
Read a i32 value.
fn read_i16(&mut self) -> Result<i16>
Read a i16 value.
fn read_i8(&mut self) -> Result<i8>
Read a i8 value.
fn read_bool(&mut self) -> Result<bool>
Read a bool value.
fn read_f64(&mut self) -> Result<f64>
Read a f64 value.
fn read_f32(&mut self) -> Result<f32>
Read a f32 value.
fn read_char(&mut self) -> Result<char>
Read a char value.
fn read_str(&mut self) -> Result<String>
Read a string value.
fn read_enum<T, F>(&mut self, _: &str, f: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read an enumeration value. Read more
fn read_enum_variant<T, F>(&mut self, names: &[&str], f: F) -> Result<T> where
F: FnMut(&mut Columns<'a>, usize) -> Result<T>,
F: FnMut(&mut Columns<'a>, usize) -> Result<T>,
Read an enumeration value. Read more
fn read_enum_variant_arg<T, F>(&mut self, _: usize, f: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read an unnamed data item for an enumeration variant. Read more
fn read_enum_struct_variant<T, F>(&mut self, names: &[&str], f: F) -> Result<T> where
F: FnMut(&mut Columns<'a>, usize) -> Result<T>,
F: FnMut(&mut Columns<'a>, usize) -> Result<T>,
Read an enumeration value. Read more
fn read_enum_struct_variant_field<T, F>(
&mut self,
_: &str,
f_idx: usize,
f: F
) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
&mut self,
_: &str,
f_idx: usize,
f: F
) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read a named data item for an enumeration variant. Read more
fn read_struct<T, F>(&mut self, _: &str, _: usize, f: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read an struct value. Read more
fn read_struct_field<T, F>(&mut self, _: &str, _: usize, f: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read a field for a struct value. Read more
fn read_tuple<T, F>(&mut self, _: usize, f: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read a tuple value. Read more
fn read_tuple_arg<T, F>(&mut self, _: usize, f: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read a data item for a tuple. Read more
fn read_tuple_struct<T, F>(&mut self, _: &str, _: usize, _: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read a tuple struct value. Read more
fn read_tuple_struct_arg<T, F>(&mut self, _: usize, _: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read a data item for a tuple struct. Read more
fn read_option<T, F>(&mut self, f: F) -> Result<T> where
F: FnMut(&mut Columns<'a>, bool) -> Result<T>,
F: FnMut(&mut Columns<'a>, bool) -> Result<T>,
Read an optional value. Read more
fn read_seq<T, F>(&mut self, f: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>, usize) -> Result<T>,
F: FnOnce(&mut Columns<'a>, usize) -> Result<T>,
Read a sequence of values. Read more
fn read_seq_elt<T, F>(&mut self, _: usize, f: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read an element in the sequence. Read more
fn read_map<T, F>(&mut self, _: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>, usize) -> Result<T>,
F: FnOnce(&mut Columns<'a>, usize) -> Result<T>,
Read an associative container (map). Read more
fn read_map_elt_key<T, F>(&mut self, _: usize, _: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read the key for an entry in a map. Read more
fn read_map_elt_val<T, F>(&mut self, _: usize, _: F) -> Result<T> where
F: FnOnce(&mut Columns<'a>) -> Result<T>,
F: FnOnce(&mut Columns<'a>) -> Result<T>,
Read the value for an entry in a map. Read more