iterators

package
Version: v0.6.4 Latest Latest
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Published: Nov 19, 2021 License: MIT Imports: 4 Imported by: 1

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Constants

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const (
	RangeKey   = "range"
	BetweenKey = "between"
	UntilKey   = "until"
	GroupByKey = "groupBy"
)

Keys to be used in templates for the functions in this package.

Variables

This section is empty.

Functions

func New

func New() hctx.Map

New returns a map of the helpers within this package.

Types

type Iterator

type Iterator interface {
	Next() interface{}
}

Iterator type can be implemented and used by the `for` command to build loops in templates

func Between

func Between(a, b int) Iterator

Between will iterate up to, but not including `b`

Between(0,10) // 0,1,2,3,4,5,6,7,8,9

func GroupBy

func GroupBy(size int, underlying interface{}) (Iterator, error)

GroupBy creates an iterator of groups or sub-slices of the underlying Array or Slice entered where each group is of length Len(underlying) / size. If Len(underlying) == size it will return an iterator with only a single group.

func Range

func Range(a, b int) Iterator

Range creates an Iterator that will iterate numbers from a to b, including b.

func Until

func Until(a int) Iterator

Until will iterate up to, but not including `a`

Until(3) // 0,1,2

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