- 前言
- Lazy
- createWrapper
- generate
- range
- repeat
- strict
- Sequence
- define
- async
- chunk
- compact
- concat
- consecutive
- contains
- countBy
- dropWhile
- each
- equals
- every
- filter
- find
- findWhere
- first
- flatten
- get
- getIterator
- groupBy
- indexBy
- indexOf
- initial
- intersection
- invoke
- isEmpty
- join
- last
- lastIndexOf
- map
- max
- memoize
- min
- none
- ofType
- pluck
- reduce
- reduceRight
- reject
- rest
- reverse
- shuffle
- size
- some
- sort
- sortBy
- sortedIndex
- sum
- takeWhile
- tap
- toArray
- toObject
- union
- uniq
- where
- without
- zip
- ArrayLikeSequence
- define
- concat
- first
- get
- length
- map
- pop
- push
- rest
- reverse
- shift
- slice
- unshift
- ObjectLikeSequence
- define
- assign
- async
- defaults
- functions
- get
- invert
- keys
- merge
- omit
- pairs
- pick
- toArray
- toObject
- values
- watch
- StringLikeSequence
- define
- charAt
- charCodeAt
- contains
- endsWith
- first
- indexOf
- last
- lastIndexOf
- mapString
- match
- reverse
- split
- startsWith
- substring
- toLowerCase
- toUpperCase
- GeneratedSequence
- each
- length
- AsyncSequence
- contains
- each
- find
- getIterator
- indexOf
- Iterator
- current
- moveNext
- AsyncHandle
- cancel
- onComplete
- onError
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slice
Returns a new sequence comprising the portion of this sequence starting from the specified starting index and continuing until the specified ending index or to the end of the sequence.
Signature
ArrayLikeSequence.slice = function(begin, end) { /*...*/ }
ArrayLikeSequence.slice = function slice(begin, end) { var length = this.length(); if (begin < 0) { begin = length + begin; } var result = this.drop(begin); if (typeof end === "number") { if (end < 0) { end = length + end; } result = result.take(end - begin); } return result; }
Name | Type(s) | Description |
---|---|---|
begin | number | The index at which the new sequence should start. |
end | number? | The index at which the new sequence should end. |
returns | ArrayLikeSequence | The new array-like sequence. |
Examples
Lazy([1, 2, 3, 4, 5]).slice(0) // sequence: [1, 2, 3, 4, 5] Lazy([1, 2, 3, 4, 5]).slice(2) // sequence: [3, 4, 5] Lazy([1, 2, 3, 4, 5]).slice(2, 4) // sequence: [3, 4] Lazy([1, 2, 3, 4, 5]).slice(-1) // sequence: [5] Lazy([1, 2, 3, 4, 5]).slice(1, -1) // sequence: [2, 3, 4] Lazy([1, 2, 3, 4, 5]).slice(0, 10) // sequence: [1, 2, 3, 4, 5]
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