1. add
    1. #
  2. all
    1. >
    2. C
  3. alter
    1. >
    2. C
  4. any
    1. >
    2. C
  5. append
    1. S
  6. appendAll
    1. >
    2. A
  7. appendOne
    1. A
  8. assignDefaults
    1. >
    2. K
  9. assignOverrides
    1. >
    2. K
  10. compareByPath
  11. compareByProp
  12. compose
    1. >
  13. containedIn
    1. @
  14. contains
    1. >
    2. &
  15. dateIsBetween
    1. D
  16. defaultFalseyValTo
    1. @
  17. defaultNullishValTo
    1. @
  18. discard
    1. >
    2. C
  19. discardFirst
    1. >
    2. Q
  20. discardFirstWhile
    1. >
    2. A
  21. discardLast
    1. >
    2. Q
  22. discardLastWhile
    1. >
    2. A
  23. discardRange
    1. A
  24. discardWhen
    1. >
    2. C
  25. divideBy
    1. #
  26. endsWith
    1. S
  27. expand
    1. >
    2. S
  28. expandEnd
    1. >
    2. S
  29. expandStart
    1. >
    2. S
  30. fillRangeWith
    1. A
  31. fillWith
    1. A
  32. find
    1. C
  33. findKey
    1. E
  34. findKeyWithVal
    1. >
    2. $
  35. findLast
    1. A
  36. findLastKey
    1. >
    2. A
  37. findLastKeyWithVal
    1. >
    2. Q
  38. first
    1. >
    2. Q
  39. flattenFully
    1. A
  40. flattenOnce
    1. A
  41. flattenToDepth
    1. A
  42. forEach
    1. C
  43. get
    1. @
  44. getAtPath
    1. @
  45. getAverageValue
  46. getCommonValues
    1. >
  47. getExclusiveValues
  48. getKeys
    1. E
  49. getMaxValue
    1. C
  50. getMinValue
    1. C
  51. getRandomValue
    1. C
  52. getSize
    1. &
  53. getValueAtMapKey
    1. P
  54. getValues
    1. E
  55. greaterThan
    1. #
  56. greaterThanOrEqualTo
    1. #
  57. groupBy
    1. C
  58. invert
    1. K
  59. invokeWith
    1. F
  60. isAfter
    1. D
  61. isAtOrAfter
    1. D
  62. isAtOrBefore
    1. D
  63. isBefore
    1. D
  64. isEmpty
    1. &
  65. isFalsey
    1. @
  66. isLaden
    1. &
  67. isTruthy
    1. @
  68. joinValues
    1. C
  69. keep
    1. C
  70. keepFirst
    1. >
    2. Q
  71. keepFirstWhile
    1. >
    2. A
  72. keepLast
    1. >
    2. Q
  73. keepLastWhile
    1. >
    2. A
  74. keepRange
    1. Q
  75. keepWhen
    1. C
  76. last
    1. Q
  77. lessThan
    1. #
  78. lessThanOrEqualTo
    1. #
  79. mAppendAll
    1. M
    2. A
  80. mAppendOne
    1. M
    2. A
  81. mAssignDefaults
    1. M
    2. K
  82. mAssignOverrides
    1. M
    2. K
  83. mDiscardFirst
    1. >
    2. M
    3. A
  84. mDiscardFirstWhile
    1. >
    2. M
    3. A
  85. mDiscardLast
    1. >
    2. M
    3. A
  86. mDiscardLastWhile
    1. >
    2. M
    3. A
  87. mDiscardRange
    1. M
    2. A
  88. mFillRangeWith
    1. M
    2. A
  89. mFillWith
    1. M
    2. E
  90. mKeepFirst
    1. >
    2. M
    3. A
  91. mKeepFirstWhile
    1. >
    2. M
    3. A
  92. mKeepLast
    1. >
    2. M
    3. A
  93. mKeepLastWhile
    1. >
    2. M
    3. A
  94. mKeepRange
    1. M
    2. A
  95. mMapValues
    1. M
    2. E
  96. mOmit
    1. M
    2. E
  97. mOrder
    1. M
    2. A
  98. mPick
    1. M
    2. E
  99. mPrependAll
    1. M
    2. A
  100. mPrependOne
    1. M
    2. A
  101. mReverse
    1. M
    2. A
  102. mSet
    1. M
  103. mSetAtPath
    1. M
  104. mShuffle
    1. M
    2. A
  105. mUpdate
    1. M
    2. E
  106. mapKeys
    1. K
  107. mapValues
    1. C
  108. multiplyBy
    1. #
  109. negate
  110. numberIsBetween
    1. #
  111. omit
    1. E
  112. order
    1. A
  113. pAll
    1. >
    2. ǁ
    3. C
  114. pAny
    1. >
    2. ǁ
    3. C
  115. pCompose
    1. >
    2. ǁ
  116. pDiscardWhen
    1. >
    2. ǁ
    3. C
  117. pFind
    1. >
    2. ǁ
    3. C
  118. pForEach
    1. >
    2. ǁ
    3. C
  119. pKeepWhen
    1. >
    2. ǁ
    3. C
  120. pMapValues
    1. >
    2. ǁ
    3. C
  121. pPassThrough
    1. ǁ
  122. pResolveValues
    1. >
    2. ǁ
    3. C
  123. pWaitMs
    1. ǁ
  124. passThrough
  125. peek
    1. >
    2. @
  126. pick
    1. E
  127. prepend
    1. S
  128. prependAll
    1. >
    2. A
  129. prependOne
    1. A
  130. prune
    1. >
    2. S
  131. pruneEnd
    1. >
    2. S
  132. pruneStart
    1. >
    2. S
  133. randomlyKeep
    1. C
  134. replaceAllMatches
    1. >
    2. S
  135. replaceFirstMatch
    1. >
    2. S
  136. returnFirstArg
    1. >
    2. @
  137. returnUndefined
    1. >
  138. reverse
    1. A
  139. roundToNearest
    1. #
  140. set
    1. E
  141. shuffle
    1. A
  142. split
    1. S
  143. splitEvery
    1. >
    2. Q
  144. startsWith
    1. S
  145. strictEquals
    1. @
  146. subtract
    1. #
  147. sumValues
    1. C
  148. swapFirstTwoArgs
    1. F
  149. transpose
    1. >
  150. truncateToNChars
    1. S
  151. truncateToNLines
    1. S
  152. update
    1. E
  153. withDatesAscending
  154. withDatesDescending
  155. withNumbersAscending
  156. withNumbersDescending
  157. withStringsAscending
  158. withStringsDescending

getMaxValue

getMaxValue

  • (collection: Numbers) => number | undefined

  1. Return the largest number in the collection

    Try It
    getMaxValue([2, 1, 3]) // is 3
getMaxValue([]) // is undefined
getMaxValue([2, 1, 3]) // is 3
getMaxValue([]) // is undefined
    Try It
    getMaxValue([2, 1, 3]) // is 3
getMaxValue([]) // is undefined
getMaxValue([2, 1, 3]) // is 3
getMaxValue([]) // is undefined

  2. Sometimes we need the largest number in a collection. Below, we're preparing to load test our website. Using last week's metrics, let's find the maximum number of site visits so we know how many to emulate for testing.

    Try It
    const metrics = {
  mon: { views: 5128, avgRequestTime: 0.42 },
  tue: { views: 4790, avgRequestTime: 0.39 },
  wed: { views: 4845, avgRequestTime: 0.41 },
  thr: { views: 5401, avgRequestTime: 0.45 },
  fri: { views: 5326, avgRequestTime: 0.42 },
}

const getViewMetrics = mapValues(get('views'))
const getMaxViews = compose([getViewMetrics, getMaxValue])
const maxViews = getMaxViews(metrics)
console.log(maxViews) // is 5401
type Metric = {
  views: number
  avgRequestTime: number
}
type Metrics = Record<string, Metric>
const metrics: Metrics = {
  mon: { views: 5128, avgRequestTime: 0.42 },
  tue: { views: 4790, avgRequestTime: 0.39 },
  wed: { views: 4845, avgRequestTime: 0.41 },
  thr: { views: 5401, avgRequestTime: 0.45 },
  fri: { views: 5326, avgRequestTime: 0.42 },
}

const getViews = get('views')<Metric>
const getViewMetrics = mapValues(getViews)<Metrics>
const getMaxViews = compose([getViewMetrics, getMaxValue])
const maxViews = getMaxViews(metrics)
console.log(maxViews) // is 5401
    Try It
    const metrics = {
  mon: { views: 5128, avgRequestTime: 0.42 },
  tue: { views: 4790, avgRequestTime: 0.39 },
  wed: { views: 4845, avgRequestTime: 0.41 },
  thr: { views: 5401, avgRequestTime: 0.45 },
  fri: { views: 5326, avgRequestTime: 0.42 },
}

const getViewMetrics = mapValues(get('views'))
const getMaxViews = compose([
  getViewMetrics,
  getMaxValue,
])
const maxViews = getMaxViews(metrics)
console.log(maxViews) // is 5401
type Metric = {
  views: number
  avgRequestTime: number
}
type Metrics = Record<string, Metric>
const metrics: Metrics = {
  mon: { views: 5128, avgRequestTime: 0.42 },
  tue: { views: 4790, avgRequestTime: 0.39 },
  wed: { views: 4845, avgRequestTime: 0.41 },
  thr: { views: 5401, avgRequestTime: 0.45 },
  fri: { views: 5326, avgRequestTime: 0.42 },
}

const getViews = get('views')<Metric>
const getViewMetrics = mapValues(
  getViews
)<Metrics>
const getMaxViews = compose([
  getViewMetrics,
  getMaxValue,
])
const maxViews = getMaxViews(metrics)
console.log(maxViews) // is 5401