hakyll/web/tutorials/04-compilers.markdown
2012-12-16 00:21:59 +01:00

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---
title: More on compilers: load, and templates
author: Jasper Van der Jeugt
---
Loading items
-------------
The compiler Monad is a complex beast, but this is nicely hidden for the user of
the Hakyll library.
Suppose that you're generating `index.html` which shows your latest brilliant
blogpost. This requires `posts/foo.markdown` to be generated *before*
`index.html` (so we don't have to generate it twice). But you don't have to care
about all of that: Hakyll will sort this out this out for you automatically!
Let's see some quick examples. We can load a specific item:
```haskell
load "posts/foo.markdown" :: Compiler (Item String)
```
Or a whole bunch of them:
```haskell
loadAll "posts/*" :: Compiler [Item String]
```
Sometimes you just want the *contents* and not the `Item`:
```haskell
loadBody "posts/foo.markdown" :: Compiler String
```
This is all useful if we want to use Hakyll's templating system.
Basic templates
---------------