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< li class = "header" > Introduction< / li >
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Introduction
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< li class = "header" > Basics< / li >
< li class = "chapter " data-level = "2.1" data-path = "route_syntax.html" >
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Route Syntax
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Router
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Path-based Routing
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Name-based Routing
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Route Data
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Route Data Validation
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Route Conflicts
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< li class = "header" > Coercion< / li >
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Coercion Explained
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Plumatic Schema
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Clojure.spec
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Data-specs
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< li class = "header" > Ring< / li >
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< li class = "chapter " data-level = "4.1" data-path = "../ring/ring.html" >
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< a href = "../ring/ring.html" >
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Ring-router
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< / a >
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< li class = "chapter " data-level = "4.2" data-path = "../ring/reverse_routing.html" >
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< a href = "../ring/reverse_routing.html" >
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Reverse-routing
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< / a >
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< li class = "chapter " data-level = "4.3" data-path = "../ring/default_handler.html" >
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< a href = "../ring/default_handler.html" >
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Default handler
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Slash handler
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Static Resources
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< a href = "../ring/dynamic_extensions.html" >
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Dynamic Extensions
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< li class = "chapter " data-level = "4.7" data-path = "../ring/data_driven_middleware.html" >
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< a href = "../ring/data_driven_middleware.html" >
Data-driven Middleware
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< li class = "chapter " data-level = "4.8" data-path = "../ring/transforming_middleware_chain.html" >
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< a href = "../ring/transforming_middleware_chain.html" >
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Transforming Middleware Chain
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< li class = "chapter " data-level = "4.9" data-path = "../ring/middleware_registry.html" >
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< a href = "../ring/middleware_registry.html" >
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Middleware Registry
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< li class = "chapter " data-level = "4.10" data-path = "../ring/default_middleware.html" >
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< a href = "../ring/default_middleware.html" >
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Default Middleware
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< / a >
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< li class = "chapter " data-level = "4.11" data-path = "../ring/coercion.html" >
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< a href = "../ring/coercion.html" >
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Pluggable Coercion
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< li class = "chapter " data-level = "4.12" data-path = "../ring/route_data_validation.html" >
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< a href = "../ring/route_data_validation.html" >
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Route Data Validation
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< / a >
< / li >
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< li class = "chapter " data-level = "4.13" data-path = "../ring/compiling_middleware.html" >
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< a href = "../ring/compiling_middleware.html" >
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Compiling Middleware
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< li class = "chapter " data-level = "4.14" data-path = "../ring/swagger.html" >
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< a href = "../ring/swagger.html" >
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Swagger Support
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< a href = "../ring/RESTful_form_methods.html" >
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RESTful form methods
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< li class = "header" > HTTP< / li >
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< li class = "chapter " data-level = "5.1" data-path = "../http/interceptors.html" >
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< a href = "../http/interceptors.html" >
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Interceptors
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< li class = "chapter " data-level = "5.2" data-path = "../http/pedestal.html" >
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< a href = "../http/pedestal.html" >
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Pedestal
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< li class = "chapter " data-level = "5.3" data-path = "../http/sieppari.html" >
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< a href = "../http/sieppari.html" >
Sieppari
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< li class = "chapter " data-level = "5.4" data-path = "../http/default_interceptors.html" >
< a href = "../http/default_interceptors.html" >
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Default Interceptors
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< / a >
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< li class = "chapter " data-level = "5.5" data-path = "../http/transforming_interceptor_chain.html" >
< a href = "../http/transforming_interceptor_chain.html" >
Transforming Interceptor Chain
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< / li >
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< li class = "header" > Frontend< / li >
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< li class = "chapter " data-level = "6.1" data-path = "../frontend/basics.html" >
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< a href = "../frontend/basics.html" >
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Basics
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< li class = "chapter " data-level = "6.2" data-path = "../frontend/browser.html" >
< a href = "../frontend/browser.html" >
Browser integration
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< li class = "chapter " data-level = "6.3" data-path = "../frontend/controllers.html" >
< a href = "../frontend/controllers.html" >
Controllers
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< li class = "header" > Advanced< / li >
< li class = "chapter " data-level = "7.1" data-path = "../advanced/configuring_routers.html" >
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< a href = "../advanced/configuring_routers.html" >
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Configuring Routers
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< li class = "chapter " data-level = "7.2" data-path = "../advanced/composing_routers.html" >
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< a href = "../advanced/composing_routers.html" >
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Composing Routers
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< / li >
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< li class = "chapter " data-level = "7.3" data-path = "../advanced/different_routers.html" >
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< a href = "../advanced/different_routers.html" >
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Different Routers
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< / li >
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< li class = "chapter " data-level = "7.4" data-path = "../advanced/route_validation.html" >
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< a href = "../advanced/route_validation.html" >
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Route Validation
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< li class = "chapter " data-level = "7.5" data-path = "../advanced/dev_workflow.html" >
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< a href = "../advanced/dev_workflow.html" >
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Dev Workflow
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< / a >
< / li >
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< li class = "chapter " data-level = "7.6" data-path = "../advanced/shared_routes.html" >
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< a href = "../advanced/shared_routes.html" >
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Shared Routes
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< li class = "header" > Misc< / li >
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< a href = "../performance.html" >
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Performance
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< / li >
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< li class = "chapter " data-level = "8.2" data-path = "../development.html" >
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Development Instructions
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< / li >
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< li class = "chapter " data-level = "8.3" data-path = "../faq.html" >
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FAQ
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<!-- Title -->
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< i class = "fa fa-circle-o-notch fa-spin" > < / i >
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< a href = ".." > Route Data< / a >
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< h1 id = "route-data" > Route Data< / h1 >
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< p > Route data is the core feature of reitit. Routes can have any map-like data attached to them. This data is interpreted either by the client application or the < code > Router< / code > via its < code > :coerce< / code > and < code > :compile< / code > hooks. Route data format can be defined and validated with < code > clojure.spec< / code > enabling an architecture of both < a href = "https://youtu.be/x9pxbnFC4aQ?t=1907" target = "_blank" > adaptive and principled< / a > components.< / p >
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< p > Raw routes can have a non-sequential route argument that is expanded (via router < code > :expand< / code > hook) into route data at router creation time. By default, Keywords are expanded into < code > :name< / code > and functions into < code > :handler< / code > keys.< / p >
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< pre > < code class = "lang-clj" > (< span class = "hljs-name" > require< / span > ' [reitit.core < span class = "hljs-symbol" > :as< / span > r])
(< span class = "hljs-name" > < span class = "hljs-builtin-name" > def< / span > < / span > router
(< span class = "hljs-name" > r/router< / span >
[[< span class = "hljs-string" > " /ping" < / span > < span class = "hljs-symbol" > ::ping< / span > ]
[< span class = "hljs-string" > " /pong" < / span > identity]
[< span class = "hljs-string" > " /users" < / span > {< span class = "hljs-symbol" > :get< / span > {< span class = "hljs-symbol" > :roles< / span > #{< span class = "hljs-symbol" > :admin< / span > }
< span class = "hljs-symbol" > :handler< / span > identity}}]]))
< / code > < / pre >
< p > The expanded route data can be retrieved from a router with < code > routes< / code > and is returned with < code > match-by-path< / code > and < code > match-by-name< / code > in case of a route match.< / p >
< pre > < code class = "lang-clj" > (< span class = "hljs-name" > r/routes< / span > router)
< span class = "hljs-comment" > ; [[" /ping" {:name :user/ping}]< / span >
< span class = "hljs-comment" > ; [" /pong" {:handler identity]}< / span >
< span class = "hljs-comment" > ; [" /users" {:get {:roles #{:admin}< / span >
< span class = "hljs-comment" > ; :handler identity}}]]< / span >
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< / code > < / pre >
< pre > < code class = "lang-clj" > (< span class = "hljs-name" > r/match-by-path< / span > router < span class = "hljs-string" > " /ping" < / span > )
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< span class = "hljs-comment" > ; #Match{:template " /ping" < / span >
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< span class = "hljs-comment" > ; :data {:name :user/ping}< / span >
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< span class = "hljs-comment" > ; :result nil< / span >
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< span class = "hljs-comment" > ; :path-params {}< / span >
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< span class = "hljs-comment" > ; :path " /ping" }< / span >
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< / code > < / pre >
< pre > < code class = "lang-clj" > (< span class = "hljs-name" > r/match-by-name< / span > router < span class = "hljs-symbol" > ::ping< / span > )
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< span class = "hljs-comment" > ; #Match{:template " /ping" < / span >
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< span class = "hljs-comment" > ; :data {:name :user/ping}< / span >
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< span class = "hljs-comment" > ; :result nil< / span >
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< span class = "hljs-comment" > ; :path-params {}< / span >
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< span class = "hljs-comment" > ; :path " /ping" }< / span >
< / code > < / pre >
< h2 id = "nested-route-data" > Nested route data< / h2 >
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< p > For nested route trees, route data is accumulated recursively from root towards leafs using < a href = "https://github.com/weavejester/meta-merge" target = "_blank" > meta-merge< / a > . Default behavior for collections is < code > :append< / code > , but this can be overridden to < code > :prepend< / code > , < code > :replace< / code > or < code > :displace< / code > using the target meta-data.< / p >
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< p > An example router with nested data:< / p >
< pre > < code class = "lang-clj" > (< span class = "hljs-name" > < span class = "hljs-builtin-name" > def< / span > < / span > router
(< span class = "hljs-name" > r/router< / span >
[< span class = "hljs-string" > " /api" < / span > {< span class = "hljs-symbol" > :interceptors< / span > [< span class = "hljs-symbol" > ::api< / span > ]}
[< span class = "hljs-string" > " /ping" < / span > < span class = "hljs-symbol" > ::ping< / span > ]
[< span class = "hljs-string" > " /admin" < / span > {< span class = "hljs-symbol" > :roles< / span > #{< span class = "hljs-symbol" > :admin< / span > }}
[< span class = "hljs-string" > " /users" < / span > < span class = "hljs-symbol" > ::users< / span > ]
[< span class = "hljs-string" > " /db" < / span > {< span class = "hljs-symbol" > :interceptors< / span > [< span class = "hljs-symbol" > ::db< / span > ]
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< span class = "hljs-symbol" > :roles< / span > ^< span class = "hljs-symbol" > :replace< / span > #{< span class = "hljs-symbol" > :db-admin< / span > }}]]]))
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< / code > < / pre >
< p > Resolved route tree:< / p >
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< pre > < code class = "lang-clj" > (< span class = "hljs-name" > r/routes< / span > router)
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< span class = "hljs-comment" > ; [[" /api/ping" {:interceptors [::api]< / span >
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< span class = "hljs-comment" > ; :name :user/ping}]< / span >
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< span class = "hljs-comment" > ; [" /api/admin/users" {:interceptors [::api]< / span >
< span class = "hljs-comment" > ; :roles #{:admin}< / span >
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< span class = "hljs-comment" > ; :name ::users} nil]< / span >
< span class = "hljs-comment" > ; [" /api/admin/db" {:interceptors [::api ::db]< / span >
< span class = "hljs-comment" > ; :roles #{:db-admin}}]]< / span >
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< / code > < / pre >
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< h2 id = "expansion" > Expansion< / h2 >
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< p > By default, router < code > :expand< / code > hook maps to < code > reitit.core/expand< / code > function, backed by a < code > reitit.core/Expand< / code > protocol. One can provide either a totally different function or add new implementations to that protocol. Expand implementations can be recursive.< / p >
< p > Naive example to add direct support for < code > java.io.File< / code > route argument:< / p >
< pre > < code class = "lang-clj" > (< span class = "hljs-name" > < span class = "hljs-builtin-name" > extend-type< / span > < / span > java.io.File
r/Expand
(< span class = "hljs-name" > expand< / span > [file options]
(< span class = "hljs-name" > r/expand< / span >
#(< span class = "hljs-name" > < span class = "hljs-builtin-name" > slurp< / span > < / span > file)
options)))
(< span class = "hljs-name" > r/router< / span >
[< span class = "hljs-string" > " /" < / span > (< span class = "hljs-name" > java.io.File.< / span > < span class = "hljs-string" > " index.html" < / span > )])
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< / code > < / pre >
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< p > See < a href = "../advanced/configuring_routers.html" > router options< / a > for all available options.< / p >
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< / section >
< / div >
< div class = "search-results" >
< div class = "has-results" >
< h1 class = "search-results-title" > < span class = 'search-results-count' > < / span > results matching "< span class = 'search-query' > < / span > "< / h1 >
< ul class = "search-results-list" > < / ul >
< / div >
< div class = "no-results" >
< h1 class = "search-results-title" > No results matching "< span class = 'search-query' > < / span > "< / h1 >
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< a href = "name_based_routing.html" class = "navigation navigation-prev " aria-label = "Previous page: Name-based Routing" >
< i class = "fa fa-angle-left" > < / i >
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< a href = "route_data_validation.html" class = "navigation navigation-next " aria-label = "Next page: Route Data Validation" >
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