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Apps Web Exam Questions & Answers 2024/2025 $8.49   Add to cart

Exam (elaborations)

Apps Web Exam Questions & Answers 2024/2025

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Apps Web Exam Questions & Answers 2024/2025 user interface, application, data - ANSWERSBasic web app architecture/skeleton: what are the layers. $ - ANSWERSSymbol to signify a global variable @ - ANSWERSSymbol to signify an instance variable @@ - ANSWERSSymbol to signify a class insta...

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  • August 14, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Apps Web
  • Apps Web
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Bensuda
Apps Web Exam Questions & Answers
2024/2025

user interface, application, data - ANSWERSBasic web app architecture/skeleton: what are the layers.



$ - ANSWERSSymbol to signify a global variable



@ - ANSWERSSymbol to signify an instance variable



@@ - ANSWERSSymbol to signify a class instance variable



#{...} - ANSWERSWhat symbol represents interpolation? E.g. "The sum 6+3 is 9"



0...4 - ANSWERSRange from 0 to 4 that doesn't include 4



self - ANSWERSThe replacement for the keyword "this" in Java



false - ANSWERSTrue or false: 0 can be used to represent a false boolean value



specials - ANSWERSBuilt-in constants similar to environment variables, e.g. __FILE__ = the current source
file name



true - ANSWERSTrue or false: if clauses can be used before or after a code statement.



until - ANSWERSEquivalent keyword to "while not"



unless - ANSWERSEquivalent keyword to "if not"

, ** - ANSWERSHow to raise something to a power



true - ANSWERSTrue or false: integer division always rounds down (towards negative infinity)



<=> - ANSWERSReturns -1 if left term is smaller than the right term, 0 if equal, and 1 if larger than the
right term



.equal? - ANSWERSHow do you check for reference value equality?



== - ANSWERSHow do you check for object value equality?



true - ANSWERSTrue or false:

s1, s2 = "hi", "hi"

is a legal statement in Ruby.



[1, 1] - ANSWERSWhat is the return value for the following statement?



x, y = 1, 1



x = 1, y = 1 - ANSWERSWhat is the result of the following statement?



x, y = 1, 1



single point of control over change - ANSWERSMeaning of SPOCOC



.cover? - ANSWERSRange method that checks if the given value falls between 2 endpoints of the range
(not necessarily exists in the range)



.include? - ANSWERSRange method that checks if the given value exists in the range

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