ensure multimethod

Methods

ensure(x:Any, pat:Any, how:Any)experimental Source: stdlib.ngs:1505

EXPERIMENTAL! Do not use! Ensures that value matches pattern. If the value matches, it is returned as is. If not, Value(how, x) is used instead. In this case, there is assert() to see that the new value is matching pat.

Example

ensure(param, Str, encode_json)

ensure(x:Any, t:Type)experimental Source: stdlib.ngs:1828

EXPERIMENTAL! Do not use! Makes sure returned value is of type t. If x is already of type t, returns x. Otherwise, returns object of type t with single item x.

Parameters

t	a subtype of Eachable1

Returns

Object of type t

ensure(x:Arr, t:Type) Source: stdlib.ngs:1936

Undocumented

Parameters

t	subtype of ArrLike

Returns

of type t

ensure(n:Int, r:NumRange) Source: stdlib.ngs:2715

Checks that x is in the range.

Example

ensure(3, 3..10)  # 3

ensure(e:Eachable1, p:Present) Source: stdlib.ngs:4464

Ensure a value is present. Does e.push(p.val) conditionally.

Example

[1,2].ensure(Present(3)) == [1,2,3]
[1,2].ensure(Present(2)) == [1,2]