1. What is Elm?
a) A functional programming language
b) A scripting language
c) A markup language
d) A markup and styling language
Answer: a) A functional programming language
2. In what year was Elm first released?
a) 2010
b) 2012
c) 2014
d) 2016
Answer: c) 2014
3. Which of the following is a feature of Elm?
a) Object-oriented programming
b) Imperative programming
c) Pattern matching
d) All of the above
Answer: c) Pattern matching
4. What is the Elm Architecture?
a) A design pattern used in Elm applications
b) A programming language used to design architectures
c) A framework for creating front-end web applications
d) An open-source library of components for Elm
Answer: a) A design pattern used in Elm applications
5. Which of the following is NOT an advantage of using Elm?
a) Strong typing
b) Good performance
c) Easy to learn
d) Large developer community
Answer: d) Large developer community
6. What is a signal in Elm?
a) A function that transforms input to output
b) A variable whose value changes in response to events
c) A conditional expression
d) A loop construct
Answer: b) A variable whose value changes in response to events
7. Which of the following is true about Elm’s type system?
a) It is dynamically typed
b) It is weakly typed
c) It is statically typed
d) It does not have a type system
Answer: c) It is statically typed
8. Which of the following is NOT a built-in module in Elm?
a) Http
b) Html
c) Json
d) Xml
Answer: d) Xml
9. Which of the following is NOT a benefit of using Elm in web development?
a) Strong package management
b) Good integration with other programming languages
c) The Elm Architecture design pattern
d) Easy testing and debugging
Answer: b) Good integration with other programming languages
10. What is a union type in Elm?
a) A type that represents a single value
b) A type that represents multiple values
c) A type that represents a range of values
d) A type that represents a set of values
Answer: b) A type that represents multiple values
11. Which of the following operators is used to compose two functions in Elm?
a) <<
b) >>
c) **
d) //
Answer: b) >>
12. Which of the following is NOT a layout model available in Elm?
a) CSS
b) Flexbox
c) Grid
d) Positioning
Answer: a) CSS
13. Which of the following is NOT a feature of Elm’s Debugger?
a) Time-travel debugging
b) Breakpoints
c) Error highlighting
d) Code profiling
Answer: d) Code profiling
14. Which of the following is a benefit of using Elm compared to other front-end web development frameworks?
a) Smaller file sizes
b) Faster rendering times
c) Easier to learn
d) All of the above
Answer: d) All of the above
15. What is the syntax for defining a function in Elm?
a) function name(parameters) body
b) function name: parameters -> body
c) function(name, parameters) -> body
d) function(name, parameters) body
Answer: d) function(name, parameters) body
16. Which of the following is NOT a built-in data structure in Elm?
a) List
b) Set
c) Map
d) Stack
Answer: d) Stack
17. Which of the following functions is used to create an Http request in Elm?
a) Http.get
b) Http.post
c) Http.create
d) Http.request
Answer: d) Http.request
18. Which of the following operators is used to perform null checks in Elm?
a) ?
b) !
c) ~
d) $
Answer: a) ?
19. Which of the following is a benefit of using Elm’s compiler compared to other programming languages?
a) Faster compile times
b) Better error messages
c) Easier syntax
d) Smaller file sizes
Answer: b) Better error messages
20. Which of the following functions is used to transform a List in Elm?
a) map
b) filter
c) reduce
d) All of the above
Answer: d) All of the above
21. How is a type defined in Elm?
a) type name(parameters) = value
b) type name = value
c) type name(parameters)
d) type name -> value
Answer: b) type name = value
22. Which of the following is a built-in function in Elm?
a) forEach
b) every
c) some
d) none
Answer: a) forEach
23. Which of the following functions is used to generate random numbers in Elm?
a) Math.rand
b) Random.int
c) Random.float
d) Random.bool
Answer: c) Random.float
24. Which of the following operators is used to compare two values in Elm?
a) =
b) ==
c) ===
d) <>
Answer: b) ==
25. Which of the following is a built-in module for Elm’s Html?
a) Div
b) Grid
c) Table
d) Canvas
Answer: a) Div
26. What is the syntax for a list in Elm?
a) [value1, value2, value3]
b) [value1; value2; value3]
c) {value1, value2, value3}
d) (value1, value2, value3)
Answer: a) [value1, value2, value3]
27. Which of the following data structures is used to associate key-value pairs in Elm?
a) List
b) Tuple
c) Set
d) Dictionary
Answer: d) Dictionary
28. Which of the following is a benefit of using Elm’s virtual DOM?
a) Faster rendering times
b) Smaller file sizes
c) Easier to write code
d) All of the above
Answer: a) Faster rendering times
29. Which of the following functions is used to format strings in Elm?
a) String.replace
b) String.format
c) String.join
d) String.padLeft
Answer: b) String.format
30. What is the syntax for a comment in Elm?
a) // This is a comment
b) /* This is a comment */
c) # This is a comment
d) ! This is a comment
Answer: b) /* This is a comment */
31. Which of the following is the correct syntax to import a module in Elm?
a) import moduleName
b) import “moduleName”
c) import {moduleName}
d) import * as moduleName from “moduleName”
Answer: d) import * as moduleName from “moduleName”
32. What is the purpose of the case expression in Elm?
a) To handle exceptions
b) To match values to patterns
c) To iterate over a list
d) To define custom types
Answer: b) To match values to patterns
33. Which of the following functions is used to generate a range of numbers in Elm?
a) List.drop
b) List.range
c) List.sort
d) List.reverse
Answer: b) List.range
34. Which of the following is a built-in module for Elm’s Http requests?
a) Request
b) Response
c) Body
d) Header
Answer: a) Request
35. Which of the following is NOT a built-in operator in Elm?
a) ++
b) ||
c) &&
d) <-
Answer: d) <-
36. Which of the following functions is used to append an element to a List in Elm?
a) List.append
b) List.concat
c) List.prepend
d) List.insert
Answer: c) List.prepend
37. Which of the following is NOT a benefit of using Elm’s virtual DOM?
a) Better performance on mobile devices
b) Faster updates
c) Less memory usage
d) Improved accessibility
Answer: d) Improved accessibility
38. Which of the following is a benefit of using Elm’s ML-style syntax?
a) Easier to learn
b) Improved code readability
c) More concise syntax
d) All of the above
Answer: d) All of the above
39. Which of the following functions is used to compute the length of a List in Elm?
a) List.length
b) List.sum
c) List.product
d) List.maximum
Answer: a) List.length
40. What is the purpose of the module declaration in Elm?
a) To define the module name
b) To import external modules
c) To export functions and values
d) To define module dependencies
Answer: a) To define the module name
41. Which of the following is NOT a benefit of using Elm compared to JavaScript?
a) Better performance
b) Better error messages
c) Better community support
d) Better security
Answer: c) Better community support
42. Which of the following functions is used to sort a List in Elm?
a) List.reverse
b) List.maximum
c) List.minimum
d) List.sort
Answer: d) List.sort
43. Which of the following is a benefit of using Elm’s virtual DOM compared to other frameworks?
a) Less HTML code required
b) Easy to write and modify
c) Better accessibility
d) All of the above
Answer: d) All of the above
44. Which of the following is a built-in module for Elm’s Json parsing and encoding?
a) Encoder
b) Decoder
c) Json
d) Xml
Answer: b) Decoder
45. Which of the following functions is used to remove an element from a List in Elm?
a) List.filter
b) List.remove
c) List.head
d) List.tail
Answer: b) List.remove
46. Which of the following is a benefit of using Elm’s functional approach?
a) Easier to reason about code
b) Easier to test and debug
c) Less code required
d) All of the above
Answer: d) All of the above
47. Which of the following is NOT a built-in operator for Elm’s String type?
a) ++
b) ==
c) <
d) |
Answer: d) |
48. Which of the following functions is used to create a Tuple in Elm?
a) Tuple.create
b) Tuple.pair
c) Tuple.triple
d) Tuple.tuple
Answer: d) Tuple.tuple
49. Which of the following functions is used to extract elements from a Tuple in Elm?
a) Tuple.first
b) Tuple.second
c) Tuple.third
d) All of the above
Answer: d) All of the above
50. Which of the following is a built-in module for Elm’s routing and navigation?
a) Url
b) Route
c) Navigation
d) Path
Answer: c) Navigation
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