ideal • runtime • patterns • list

Pattern that matches a list of elements.

class list pattern[readonly equality comparable element type]

Declaration: list pattern

Announcements: list pattern

Direct supertypes: base pattern

All supertypes: validatable / value / entity / pattern / predicate / function / deeply_immutable data / debuggable / Object / stringable

immutable list[element type] element list

Declaration: element list

Use: element list / element list / element list / element list / element list / element list

list pattern(readonly list[element type] element list)

Declaration: constructor

implement implicit boolean call(readonly list[element type] the list)

Declaration: constructor

Direct overrides: function

Check whether the given list can be a start of the sequence that matches this pattern.

implement boolean is viable prefix(readonly list[element type] the list)

Declaration: is viable prefix

Direct overrides: pattern

Returns the maximum number of the elements of a given list that matches the pattern, or null if there is no prefix match. This is a greedy match: it mtaches the longest prefix.

implement nonnegative or null match prefix(readonly list[element type] the list)

Declaration: match prefix

Direct overrides: pattern

Gets the first non-empty match for this pattern.

implement range or null find first(readonly list[element type] the list, var nonnegative start index)

Declaration: find first

Direct overrides: pattern

implement void validate()

Declaration: validate

Direct overrides: validatable