A cache memory is a small piece of memory that can be accessed very fast. It keeps copies of data that is used often. For example, by keeping data read from a database in memory, the second time the data is needed, it can be taken from the cache in stead of a lengthy query in the database.
Caches can be found in hardware (ie., on the cpu itself), but also as a programming concept in software.
<span>A nested IF function is one in which the action to be taken for the true or false case includes yet another if function.
</span>Nested function is a function which is defined within another function, in this case it is defined within the IF function, which <span>returns one value if a certain predefined condition is true and another value if the condition is false. </span>
The code chunk that is going to let this data scientists to do this is
- unite(retail, “price”, price_dollars, price_cents, sep=”.”)
- Option C
<h3>What is a code chunk in R</h3>
These are the means that are helpful for rendering the outputs that are in the R programming language to documents.
The chunk can help to show the written code for the sake of illustration.
<h3>Complete question</h3>
Please Choose The Correct Option ✔
A
unite(retail, price_dollars, price_cents, sep=”.”)
B
unite(retail, “price”, price_dollars, price_cents)
C
unite(retail, “price”, price_dollars, price_cents, sep=”.”)
Correct Answer
D
unite(retail, “price”, price_cents, sep=”.”)
Read more on R codes here:
brainly.com/question/26253705
