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Merge pull request #26 from DjebbZ/cheatsheet

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Add a cheatsheet
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# Cheat Sheet
Most of Specter's API consists of an operation, a path and the data to operate on.
Generally usage is like this:
```
(Operation Path Data)
where
Operation: Query|Transform
Path: Navigator|Vector of Navigators
Data: User-provided data structure to operate on.
```
Refer to the specific API documentation to check usage.
## Operations
There are 2 types of operations: queries and transforms.
#### Query
[`select`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#select), [`select-any`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#select-any), [`select-first`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#select-first), [`select-one`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#select-one), [`select-one!`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#select-one-1), [`selected-any?`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#selected-any), [`traverse`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#traverse), [`traverse-all`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#traverse-all)
#### Transform
[`transform`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#transform), [`multi-transform`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#multi-transform), [`replace-in`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#replace-in), [`setval`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#setval), `vtransform`
## Paths
A path (often named `apath`) is a navigator or a vector of navigators.
Navigator sometimes operates on specific data structures.
#### Maps
[`MAP-KEYS`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#map-keys), [`MAP-VALS`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#map-vals), `compact`, [`keypath`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#keypath), [`map-key`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#map-key), [`submap`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#submap), [`must`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#must)
#### Sequences
[`ALL`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#all), [`ALL-WITH-META`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#all-with-meta), [`AFTER-ELEM`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#after-elem), [`BEFORE-ELEM`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#before-elem), [`BEGINNING`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#beginning), [`END`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#end), [`FIRST`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#first), [`INDEXED-VALS`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#indexed-vals), [`LAST`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#last)
[`before-index`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#before-index), `compact`, [`continuous-subseqs`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#continuous-subseqs), [`filterer`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#filterer), [`index-nav`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#index-nav), [`nthpath`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#nthpath), [`srange`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#srange), [`srange-dynamic`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#srange-dynamic)
#### Sets
[`NONE-ELEM`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#none-elem), `compact`, [`set-elem`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#set-elem), [`subset`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#subset)
#### Keywords/Symbols
[`NAME`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#name), [`NAMESPACE`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#namespace)
#### Atoms
[`ATOM`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#atom)
#### Strings
[`BEGINNING`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#beginning), [`END`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#end), [`FIRST`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#first), [`LAST`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#last), [`regex-nav`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#regex-nav), [`srange`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#srange)
#### Metadata
[`ALL-WITH-META`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#all-with-meta), [`META`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#meta)
#### Views
[`NIL->LIST`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#nil-list), [`NIL->SET`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#nil-set), [`NIL->VECTOR`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#nil-vector), [`nil->val`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#nil-val), [`parser`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#parser), [`transformed`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#transformed), [`traversed`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#traversed), [`view`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#view)
#### Value collection
[`DISPENSE`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#dispense), [`VAL`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#val), [`collect`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#collect), [`collect-one`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#collect-one), [`collected?`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#collected), [`putval`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#putval), [`with-fresh-collected`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#with-fresh-collected)
#### Control
[`STAY`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#stay), [`STOP`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#stop), [`cond-path`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#cond-path), [`continue-then-stay`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#continue-then-stay), [`if-path`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#if-path), [`multi-path`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#multi-path), [`stay-then-continue`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#stay-then-continue), [`subselect`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#subselect)
#### Filters
[`pred`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#pred), [`pred=`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#pred-1), [`pred<`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#pred-2), [`pred>`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#pred-3), [`pred<=`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#pred-4), [`pred>=`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#pred-5), [`not-selected?`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#not-selected), [`selected?`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#selected)
#### Walking
[`codewalker`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#codewalker), [`walker`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#walker)
#### Multi-transform
[`terminal`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#terminal), [`terminal-val`](https://github.com/nathanmarz/specter/wiki/List-of-Navigators#terminal-val), `vterminal`
## Custom navigators
[`declarepath`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#declarepath), [`defprotocolpath`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#defprotocolpath), [`extend-protocolpath`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#extend-protocolpath), `local-declarepath`, [`path`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#path), [`providepath`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#providepath), [`recursive-path`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#recursive-path), [`defcollector`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#defcollector), [`defdynamicnav`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#defdynamicnav), [`defnav`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#defnav), [`eachnav`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#eachnav), [`nav`](https://github.com/nathanmarz/specter/wiki/List-of-Macros#nav)

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- [selected-any?](#selected-any)
- [select-first](#select-first)
- [select-one](#select-one)
- [select-one!](#select-one)
- [select-one!](#select-one-1)
- [setval](#setval)
- [transform](#transform)
- [traverse](#traverse)

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@ -61,11 +61,11 @@ It is a convention in Specter that unparameterized navigators are capitalized, w
- [nthpath](#nthpath)
- [parser](#parser)
- [pred](#pred)
- [pred=](#pred=)
- [pred<](#pred<)
- [pred<=](#pred<=)
- [pred>](#pred>)
- [pred>=](#pred>=)
- [pred=](#pred-1)
- [pred<](#pred-2)
- [pred<=](#pred-3)
- [pred>](#pred-4)
- [pred>=](#pred-5)
- [putval](#putval)
- [not-selected?](#not-selected)
- [regex-nav](#regex-nav)