As noted in an issue, removing all elements from an OrderedMap except those that fulfill some criteria (known as "filtering" in functional contexts) is not straight-forward and contains a pitfall.
I have added a Filter function that is passed a predicate function and avoids this pitfall. The predicate function should return true if the key&value fit the criteria and should be kept and false otherwise, as may be familiar from other programming languages (e.g. python: filter)
Additionally I have added an example of this to the README. The new iteration syntax is now also showcased there.
WilliamFrei
commented
1 month ago
As noted in an issue, removing all elements from an OrderedMap except those that fulfill some criteria (known as "filtering" in functional contexts) is not straight-forward and contains a pitfall.
I have added a
Filterfunction that is passed a predicate function and avoids this pitfall. The predicate function should return true if the key&value fit the criteria and should be kept and false otherwise, as may be familiar from other programming languages (e.g. python: filter)Additionally I have added an example of this to the README. The new iteration syntax is now also showcased there.