package collections
import "github.com/gohugoio/hugo/tpl/collections"
Package collections provides template functions for manipulating collections such as arrays, maps, and slices.
Index ¶
- type Namespace
- func New(deps *deps.Deps) *Namespace
- func (ns *Namespace) After(index interface{}, seq interface{}) (interface{}, error)
- func (ns *Namespace) Append(args ...interface{}) (interface{}, error)
- func (ns *Namespace) Apply(seq interface{}, fname string, args ...interface{}) (interface{}, error)
- func (ns *Namespace) Complement(seqs ...interface{}) (interface{}, error)
- func (ns *Namespace) Delimit(seq, delimiter interface{}, last ...interface{}) (template.HTML, error)
- func (ns *Namespace) Dictionary(values ...interface{}) (map[string]interface{}, error)
- func (ns *Namespace) EchoParam(a, key interface{}) interface{}
- func (ns *Namespace) First(limit interface{}, seq interface{}) (interface{}, error)
- func (ns *Namespace) Group(key interface{}, items interface{}) (interface{}, error)
- func (ns *Namespace) In(l interface{}, v interface{}) (bool, error)
- func (ns *Namespace) Index(item interface{}, args ...interface{}) (interface{}, error)
- func (ns *Namespace) Intersect(l1, l2 interface{}) (interface{}, error)
- func (ns *Namespace) IsSet(a interface{}, key interface{}) (bool, error)
- func (ns *Namespace) KeyVals(key interface{}, vals ...interface{}) (types.KeyValues, error)
- func (ns *Namespace) Last(limit interface{}, seq interface{}) (interface{}, error)
- func (ns *Namespace) Merge(params ...interface{}) (interface{}, error)
- func (ns *Namespace) NewScratch() *maps.Scratch
- func (ns *Namespace) Querify(params ...interface{}) (string, error)
- func (ns *Namespace) Reverse(slice interface{}) (interface{}, error)
- func (ns *Namespace) Seq(args ...interface{}) ([]int, error)
- func (ns *Namespace) Shuffle(seq interface{}) (interface{}, error)
- func (ns *Namespace) Slice(args ...interface{}) interface{}
- func (ns *Namespace) Sort(seq interface{}, args ...interface{}) (interface{}, error)
- func (ns *Namespace) SymDiff(s2, s1 interface{}) (interface{}, error)
- func (ns *Namespace) Union(l1, l2 interface{}) (interface{}, error)
- func (ns *Namespace) Uniq(seq interface{}) (interface{}, error)
- func (ns *Namespace) Where(seq, key interface{}, args ...interface{}) (interface{}, error)
Types ¶
type Namespace ¶
type Namespace struct {
// contains filtered or unexported fields
}
Namespace provides template functions for the "collections" namespace.
func New ¶
New returns a new instance of the collections-namespaced template functions.
func (*Namespace) After ¶
After returns all the items after the first N in a rangeable list.
func (*Namespace) Append ¶
Append appends the arguments up to the last one to the slice in the last argument. This construct allows template constructs like this:
{{ $pages = $pages | append $p2 $p1 }}
Note that with 2 arguments where both are slices of the same type, the first slice will be appended to the second:
{{ $pages = $pages | append .Site.RegularPages }}
func (*Namespace) Apply ¶
Apply takes a map, array, or slice and returns a new slice with the function fname applied over it.
func (*Namespace) Complement ¶
Complement gives the elements in the last element of seqs that are not in any of the others. All elements of seqs must be slices or arrays of comparable types.
The reasoning behind this rather clumsy API is so we can do this in the templates:
{{ $c := .Pages | complement $last4 }}
func (*Namespace) Delimit ¶
func (ns *Namespace) Delimit(seq, delimiter interface{}, last ...interface{}) (template.HTML, error)
Delimit takes a given sequence and returns a delimited HTML string. If last is passed to the function, it will be used as the final delimiter.
func (*Namespace) Dictionary ¶
Dictionary creates a map[string]interface{} from the given parameters by walking the parameters and treating them as key-value pairs. The number of parameters must be even. The keys can be string slices, which will create the needed nested structure.
func (*Namespace) EchoParam ¶
func (ns *Namespace) EchoParam(a, key interface{}) interface{}
EchoParam returns a given value if it is set; otherwise, it returns an empty string.
func (*Namespace) First ¶
First returns the first N items in a rangeable list.
func (*Namespace) Group ¶
Group groups a set of elements by the given key. This is currently only supported for Pages.
func (*Namespace) In ¶
In returns whether v is in the set l. l may be an array or slice.
func (*Namespace) Index ¶
Index returns the result of indexing its first argument by the following arguments. Thus "index x 1 2 3" is, in Go syntax, x[1][2][3]. Each indexed item must be a map, slice, or array.
Copied from Go stdlib src/text/template/funcs.go.
We deviate from the stdlib due to https://github.com/golang/go/issues/14751.
TODO(moorereason): merge upstream changes.
func (*Namespace) Intersect ¶
Intersect returns the common elements in the given sets, l1 and l2. l1 and l2 must be of the same type and may be either arrays or slices.
func (*Namespace) IsSet ¶
IsSet returns whether a given array, channel, slice, or map has a key defined.
func (*Namespace) KeyVals ¶
KeyVals creates a key and values wrapper.
func (*Namespace) Last ¶
Last returns the last N items in a rangeable list.
func (*Namespace) Merge ¶
Merge creates a copy of the final parameter and merges the preceeding parameters into it in reverse order. Currently only maps are supported. Key handling is case insensitive.
func (*Namespace) NewScratch ¶
NewScratch creates a new Scratch which can be used to store values in a thread safe way.
func (*Namespace) Querify ¶
Querify encodes the given parameters in URL-encoded form ("bar=baz&foo=quux") sorted by key.
func (*Namespace) Reverse ¶
Reverse creates a copy of slice and reverses it.
func (*Namespace) Seq ¶
Seq creates a sequence of integers. It's named and used as GNU's seq.
Examples:
3 => 1, 2, 3 1 2 4 => 1, 3 -3 => -1, -2, -3 1 4 => 1, 2, 3, 4 1 -2 => 1, 0, -1, -2
func (*Namespace) Shuffle ¶
Shuffle returns the given rangeable list in a randomised order.
func (*Namespace) Slice ¶
func (ns *Namespace) Slice(args ...interface{}) interface{}
Slice returns a slice of all passed arguments.
func (*Namespace) Sort ¶
Sort returns a sorted sequence.
func (*Namespace) SymDiff ¶
SymDiff returns the symmetric difference of s1 and s2. Arguments must be either a slice or an array of comparable types.
func (*Namespace) Union ¶
Union returns the union of the given sets, l1 and l2. l1 and l2 must be of the same type and may be either arrays or slices. If l1 and l2 aren't of the same type then l1 will be returned. If either l1 or l2 is nil then the non-nil list will be returned.
func (*Namespace) Uniq ¶
Uniq takes in a slice or array and returns a slice with subsequent duplicate elements removed.
func (*Namespace) Where ¶
Where returns a filtered subset of a given data type.
Source Files ¶
append.go apply.go collections.go complement.go index.go init.go merge.go reflect_helpers.go sort.go symdiff.go where.go
- Version
- v0.75.0
- Published
- Sep 14, 2020
- Platform
- linux/amd64
- Imports
- 21 packages
- Last checked
- 2 hours ago –
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