.. _sprout-string-basic_string-length:

###############################################################################
length
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Interface
========================================
.. sourcecode:: c++

  SPROUT_CONSTEXPR size_type length() const SPROUT_NOEXCEPT;

Returns
========================================

| The number of elements contained in the string.

Examples
========================================
.. sourcecode:: c++

  #include <sprout/string.hpp>
  using namespace sprout;
  
  SPROUT_STATIC_CONSTEXPR auto input = string<8>("homuhomu");
  static_assert(input.length() == 8, "input size is 8.");

Complexity
========================================

| Recursive function invocations in *O(1)* (constant) depth.

Header
========================================

| ``sprout/string/string.hpp``
| Convenience header: ``sprout/string.hpp``