map function造句
1. Inverted Index: The map function parses each document, and emits a sequence of pairs.
2. Listing 5 shows how you specify the map function for your log analyzer sample.
3. My map function is straightforward — it simply grabs the user_name property of all documents passed to it.
4. Defining a map function is thus really just a matter of determining what you want to grab from an incoming line of text.
5. The Map function emits each word plus an associated count of occurrences.
6. The map function, originating in functional languages like Lisp but now common in many other languages, is an application of a function over a list of elements.
7. Using this with the map function, we get a sequence of integers, just as we wanted.
8. The view's map function takes the document as an argument and performs a series of computations to determine what data should be available via the view.
9. You can invoke the Test Map function from the toolbar (Figure 5) or the context menu of the map (Figure 6).
10. The first, keys, is a list of keys that were created in the map function.
11. In many cases, you don't need the reduce function; the map function can handle most things for you.
12. In databases with thousands or hundreds of thousands of documents, running the map function over every document can be time-consuming.
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13. To find all the tickets issued by Officer Ree, for example, you write a map function that filters the officer property accordingly.
14. Moving inside-out in Listing 12, notice that we use the map function, which takes two parameters: a function and a sequence.
15. Averages, summations, and other summary types of data are not possible with just a map function.
16. Like the Google framework MapReduce; MR describes a way of implementing parallelism using the Map function which splits a large data into multiple key-value pairs.
17. With this program you can read input for a map function from 2 different files.
18. Now that we have this sequence of sequences, we use the map function.
19. The third argument, rereduce, has to do with whether or not this reduce function is operating on aggregate information or the raw results from the map (the ones from the map function).
20. Views are essentially functions that you write (in JavaScript) in the style of MapReduce; that is, you end up writing a map function and a reduce function.