- 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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defaults
Returns an ObjectLikeSequence whose elements are the combination of this sequence and a 'default' object. In the case of a key appearing in both this sequence and the given object, this sequence's value will override the default object's.
Signature
ObjectLikeSequence.defaults = function(defaults) { /*...*/ }
ObjectLikeSequence.defaults = function defaults(defaults) { return new DefaultsSequence(this, defaults); }
Name | Type(s) | Description |
---|---|---|
defaults | Object | The 'default' object to use for missing keys in this sequence. |
returns | ObjectLikeSequence | A new sequence comprising elements from this sequence supplemented by the contents of |
Examples
Lazy({ name: "Dan" }).defaults({ name: "User", password: "passw0rd" }) // sequence: { name: "Dan", password: "passw0rd" } Lazy({ foo: false }).defaults({ foo: 'foo' }).get('foo') // false Lazy({ a: 1 }).defaults({ b: 2 }).defaults({ c: 3 }) // sequence: { a: 1, b: 2, c: 3 } Lazy({ a: 1 }).defaults({ b: 2 }).defaults({ a: 3 }) // sequence: { a: 1, b: 2 } Lazy({ a: 1, b: 2 }).defaults({ b: 5 }).defaults({ c: 3, d: 4 }) // sequence: { a: 1, b: 2, c: 3, d: 4 }
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