On Sat, 18 Feb 2012, Twan van Laarhoven wrote:
On 2012-02-18 00:51, Johan Tibell wrote:
Lets settle on the names. I currently dislike that we have 'lookup' and 'findDefault' (which is lookup with a default value.) We should agree on a principle for when we use the two words.
With regards to 'lookup' vs 'find': the current convention seems to be that lookup* returns 'Maybe a', while find* returns 'a'. Compare for example 'lookupIndex' and 'findIndex'.
Are there any good use cases for findLessEqual/findGreaterEqual, instead of calling lookup and if it fails, call predecessor/successor?
These findLessEqual/findGreaterEqual remind me on the search for a string with the maximum common prefix. That is, if I have a (set :: Set String) and I want to find the member of 'set', that has the longest common prefix with a string 'str', then I know that either (findLessEqual str set) or (findGreaterEqual str set) is the wanted string.