xantier/kollections

A primer and a cheat sheet for Kotlin collection extension functions

kollections's Issues

Partition function is incorrect

From email:

"Hey Jussi,

I was going to make a pull request to fix this but didn't have access permissions. I'm not sure if this was true with older versions of Kotlin, but Kotlin as of now has the partition function put values matching the predicate on the left side, not the right side.

This cheat sheet is great BTW! Thanks for putting it together!
"

landscape pdf

It would be great if the pdf could be landscape oriented to have fewer wraps/linebreaks.

Add chunked

fun <T> Iterable<T>.chunked(size: Int): List<List<T>>

Splits this collection into a list of lists each not exceeding the given size.

https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/chunked.html

Replace `contains` with `in`

The examples of the contains operator are not idiomatic since they use its method form instead of its operator form:

# Checks and Actions 
## Contains

// Not idiomatic
intLi­st.c­on­tai­ns(3)  

// Is idiomatic
3 in intList 

I think the sheet will greatly benefit from replacing the methods with operators.

inverted arguments for fold* and reduce* examples

All fold* and reduce examples are incorrect because arguments are flipped. The accumulator always comes last.