[#BloombergLP-bslstl-DefaultSearcher]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::DefaultSearcher
:relfileprefix: ../../
:mrdocs:

Searcher functor using a naive sequential search for a fixed needle.

== Synopsis

Declared in `<bslstl_defaultsearcher.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class FORWARD_ITR_NEEDLE,
    class EQUAL = xref:bsl/equal_to-0d.adoc[bsl::equal_to<bsl::iterator_traits<FORWARD_ITR_NEEDLE>::value_type>]>
class DefaultSearcher;
----

== Description

This class template defines functors that can search for the sequence of `value_type` values defined on construction (i.e., the "needle") in sequences of `value_type` values (i.e., "haystacks") passed to the functor's `operator()`.

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslstl/DefaultSearcher/2constructor.adoc[`DefaultSearcher`]         [.small]#[constructor]#
| Create a searcher for the needle `[needleFirst, needleLast)]`.
| xref:BloombergLP/bslstl/DefaultSearcher/equal.adoc[`equal`] 
| Return the functor used by this searcher object to compare `value_type` values.
| xref:BloombergLP/bslstl/DefaultSearcher/needleFirst.adoc[`needleFirst`] 
| Return an iterator referring to the first element of the sequence of `value_type` values that can be sought by this searcher object.
| xref:BloombergLP/bslstl/DefaultSearcher/needleLast.adoc[`needleLast`] 
| Return an iterator referring to one past the last element of the sequence of `value_type` values that can be sought by this searcher object.
| xref:BloombergLP/bslstl/DefaultSearcher/operator_call.adoc[`operator()`] 
| Search `[haystackFirst, haystackLast)]` for the constructed pattern.
|===



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