Len class
Length-related constraints.
Valid input types: String, num, Iterable, and Map.
Constructors
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Len.new(int len, {String? diff})
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Constrains the length (number of items).
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Len.max(int max, {String? long})
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Constrains the length (number of items) to a maximum amount.
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Len.min(int min, {String? short})
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Constrains the length (number of items) to a minimum amount.
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Len.range(int min, int max, {String? short, String? long})
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Constrains the length (number of items) within the range
min–max.
Properties
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hashCode
→ int
-
The hash code for this object.
no setterinherited
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runtimeType
→ Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
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call(Object? input)
→ String?
-
Valid - returns null - if the length of
input satisfies the length
requirement.
-
noSuchMethod(Invocation invocation)
→ dynamic
-
Invoked when a nonexistent method or property is accessed.
inherited
-
toString()
→ String
-
A string representation of this object.
inherited
