Struct grep_regex::RegexCaptures
source · [−]pub struct RegexCaptures(_);
Expand description
Represents the match offsets of each capturing group in a match.
The first, or 0
th capture group, always corresponds to the entire match
and is guaranteed to be present when a match occurs. The next capture
group, at index 1
, corresponds to the first capturing group in the regex,
ordered by the position at which the left opening parenthesis occurs.
Note that not all capturing groups are guaranteed to be present in a match.
For example, in the regex, (?P<foo>\w)|(?P<bar>\W)
, only one of foo
or bar
will ever be set in any given match.
In order to access a capture group by name, you’ll need to first find the
index of the group using the corresponding matcher’s capture_index
method, and then use that index with RegexCaptures::get
.
Trait Implementations
sourceimpl Captures for RegexCaptures
impl Captures for RegexCaptures
sourcefn len(&self) -> usize
fn len(&self) -> usize
Return the total number of capturing groups. This includes capturing groups that have not matched anything. Read more
sourcefn get(&self, i: usize) -> Option<Match>
fn get(&self, i: usize) -> Option<Match>
Return the capturing group match at the given index. If no match of
that capturing group exists, then this returns None
. Read more
sourceimpl Clone for RegexCaptures
impl Clone for RegexCaptures
sourcefn clone(&self) -> RegexCaptures
fn clone(&self) -> RegexCaptures
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
Auto Trait Implementations
impl RefUnwindSafe for RegexCaptures
impl Send for RegexCaptures
impl Sync for RegexCaptures
impl Unpin for RegexCaptures
impl UnwindSafe for RegexCaptures
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more