Array Manipulation Library (82)

Basic Access (7)¶

Short Description	Function
Length	`a.len`
Extract subsequence	`a.subseq`
Extract the first item	`a.head`
Extract all but the first item	`a.tail`
Extract the last item	`a.last`
Extract all but the last item	`a.init`
Modify subsequence	`a.subseqto`

Short Description	Function
Concatenate two arrays	`a.concat`
Append	`a.append`
Append to a circular buffer with a maximum size	`a.cycle`
Insert or prepend	`a.insert`
Replace item	`a.replace`
Remove item	`a.remove`
Rotate an array left	`a.rotate`

Short Description	Function
Sort	`a.sort`
Sort with a less-than function	`a.sortLT`
Randomly shuffle array	`a.shuffle`
Reverse order	`a.reverse`

Short Description	Function
Maximum of all values	`a.max`
Minimum of all values	`a.min`
Maximum with a less-than function	`a.maxLT`
Minimum with a less-than function	`a.minLT`
Maximum N items	`a.maxN`
Minimum N items	`a.minN`
Maximum N with a less-than function	`a.maxNLT`
Minimum N with a less-than function	`a.minNLT`
Argument maximum	`a.argmax`
Argument minimum	`a.argmin`
Argument maximum with a less-than function	`a.argmaxLT`
Argument minimum with a less-than function	`a.argminLT`
Maximum N arguments	`a.argmaxN`
Minimum N arguments	`a.argminN`
Maximum N arguments with a less-than function	`a.argmaxNLT`
Minimum N arguments with a less-than function	`a.argminNLT`

Short Description	Function
Add all array values	`a.sum`
Multiply all array values	`a.product`
Sum of logarithms	`a.lnsum`
Log of the sum of exponentials without roundoff error	`a.logsumexp`
Arithmetic mean	`a.mean`
Geometric mean	`a.geomean`
Median	`a.median`
Percentile in unit interval	`a.ntile`
Mode, or most common value	`a.mode`

Short Description	Function
Transform array items with function	`a.map`
Transform array items, providing access to the index	`a.mapWithIndex`
Filter array items with a function	`a.filter`
Filter array items, providing access to the index	`a.filterWithIndex`
Filter and map	`a.filterMap`
Filter and map, providing access to the index	`a.filterMapWithIndex`
Map and flatten	`a.flatMap`
Map and flatten, providing access to the index	`a.flatMapWithIndex`
Zip and map	`a.zipmap`
Zip and map, providing access to the index	`a.zipmapWithIndex`
Reduce array items to a single value	`a.reduce`
Right-to-left reduce	`a.reduceRight`
Fold array items to another type	`a.fold`
Right-to-left fold	`a.foldRight`
Take items until predicate is false	`a.takeWhile`
Drop items until predicate is true	`a.dropWhile`

Short Description	Function
Existential check, `∃`	`a.any`
Univeral check, `∀`	`a.all`
Pairwise check of two arrays	`a.corresponds`
Pairwise check, providing access to the index	`a.correspondsWithIndex`

Short Description	Function
Sliding window	`a.slidingWindow`
Unique combinations of a fixed size	`a.combinations`
Permutations	`a.permutations`
Flatten array	`a.flatten`
Group items by category	`a.groupby`