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  <script src="{{ site.baseurl }}/js/vendor/prism.js" defer></script>
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{% endif %}

      routeNum: ownProps.routes.filter(r => r.path).length
    })

So we can include two types of `name` prop in our Route components in `routes.js`:

1. Functions, that pull it out of state.
2. Strings, that are directly formatted.

<pre class="language-jsx">
  <code class="language-jsx">
    <Route name={state => state.locations.name} path={'locations/:id'} component={Locations}/>
    <Route name={'locations'} path={'locations/:id'} component={Locations}/>
  </code>
</pre>

Then, finally, we can do a bit of further mapping and reducing in the Breadcrumb container component to concatenate the paths correctly and evaluate the params.

    // Evaluate and replace multiple params in path
    // eg. door/:id/foo/:doorId -> door/2/foo/5
    const replaceParams = params => route => {
      const matches = route.path.match(/:([^\/]+)/g) || [];