Filter vs Functionarraykeys - What's the difference?
filter | functionarraykeys |
A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another.
Electronics or software that separates unwanted signals (for example noise) from wanted signals or that attenuates selected frequencies.
Any item, mechanism, device or procedure that acts to separate or isolate.
* {{quote-magazine, title=No hiding place
, date=2013-05-25, volume=407, issue=8837, page=74, magazine=(The Economist)
(mathematics, order theory) A non-empty upper set (of a partially ordered set) which is closed under binary infima (a.k.a. meets).
To sort, sift, or isolate.
* This strainer should filter out the large particles.
* '>citation
To diffuse; to cause to be less concentrated or focused.
* The leaves of the trees filtered the light.
To pass through a filter or to act as though passing through a filter.
* The water filtered through the rock and soil.
To move slowly or gradually; to come or go a few at a time.
* The crowd filtered into the theater.
To ride a motorcycle between lanes on a road
* I can skip past all the traffic on my bike by filtering .
filter
English
Noun
(en noun)citation, passage=In America alone, people spent $170 billion on “direct marketing”—junk mail of both the physical and electronic varieties—last year. Yet of those who received unsolicited adverts through the post, only 3% bought anything as a result. If the bumf arrived electronically, the take-up rate was 0.1%. And for online adverts the “conversion” into sales was a minuscule 0.01%. That means about $165 billion was spent not on drumming up business, but on annoying people, creating landfill and cluttering spam filters .}}
- The collection of cofinite subsets of ''?'' is a filter under inclusion: it includes the intersection of every pair of its members, and includes every superset of every cofinite set.
- If (1) the universal set (here, the set of natural numbers) were called a "large" set, (2) the superset of any "large" set were also a "large" set, and (3) the intersection of a pair of "large" sets were also a "large" set, then the set of all "large" sets would form a filter .