Is there a preferred library for partial applicati...

# announcements

[Jakub Pi]

Is there a preferred library for partial application and similar functionality that is not available in stdlib?

fun byTagCategoryAndTag(tagCategory : TagCategory, vararg tags : TagInfo) : (TagCategory, TagInfo) -> Boolean = { cat, tag -> tagCategory == cat && tag in tags}
fun byMatchingTags(vararg tags : TagInfo) : (TagInfo) -> Boolean =  partial(::byTagCategoryAndTag, TagCategory.ROOT)

[kevinherron]

arrow has a lot of FP stuff if you wanna go off the deep end: https://arrow-kt.io

[kevinherron]

there’s .partiallyN permutation extension functions on all the kotlin.FunctionN types

[Jakub Pi]

Thanks, already using arrow, took me a while thanks the varargs that was throwing me off. My problem was I needed to partially apply to the return value.

[Jakub Pi]

fun byMatchingTags(vararg tags : TagInfo) : (TagInfo) -> Boolean =  byTagCategoryAndTag(TagCategory.ROOT, *tags).partially1(TagCategory.ROOT)