Struct grep_pcre2::RegexCaptures [−][src]
pub struct RegexCaptures { /* fields omitted */ }
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
Return the total number of capturing groups. This includes capturing groups that have not matched anything. Read more
Return the capturing group match at the given index. If no match of
that capturing group exists, then this returns None
. Read more
Returns true if and only if these captures are empty. This occurs
when len
is 0
. 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
Mutably borrows from an owned value. Read more