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The CDPD Public Domain Collection for CDTV 1
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CDPD_Vol1.bin
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pd
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026-050
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037
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prelude
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scollection.st
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1992-06-23
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133 lines
Class SequenceableCollection :KeyedCollection
[
, aCollection
^ self coerce: (List new ;
addAllLast: self ;
addAllLast: aCollection )
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collect: aBlock
^ self coerce:
(self inject: List new
into: [:x :y | x addLast: (aBlock value: y) . x ] )
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copyFrom: start to: stop | newcol |
newcol <- List new.
(start to: stop) do: [:i | newcol addLast: (self at: i)].
^ self coerce: newcol
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copyWith: newElement
^ self coerce: (List new ;
addAllLast: self ;
addLast: newElement )
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copyWithout: oldElement | newcol |
newcol <- List new.
self do: [ :x | (x == oldElement)
ifFalse: [ newcol addLast: x ]].
^ self coerce: newcol
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equals: aSubCollection startingAt: anIndex | i |
i <- 0.
self do: [:x |
(x = (aSubCollection at: (anIndex + i)
ifAbsent: [^ false]))
ifFalse: [^ false].
i <- i + 1].
^ true
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findFirst: aBlock
^ self findFirst: aBlock
ifAbsent: [self error: 'first element not found']
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findFirst: aBlock ifAbsent: exceptionBlock
self do: [:x | (aBlock value: x)
ifTrue: [ ^ self currentKey]].
^ exceptionBlock value
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findLast: aBlock
self findLast: aBlock
ifAbsent: [self error: 'last element not found']
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findLast: aBlock ifAbsent: exceptionBlock
self reverseDo: [:x | (aBlock value: x)
ifTrue: [ ^ self currentKey]].
^ exceptionBlock value
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indexOfSubCollection: aSubCollection
startingAt: anIndex
ifAbsent: exceptionBlock | n m |
n <- anIndex.
m <- self size - aSubCollection size.
[n <= m] whileTrue:
[(aSubCollection equals: self startingAt: n)
ifTrue: [^ n].
n <- n + 1].
^ exceptionBlock value
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indexOfSubCollection: aSubCollection startingAt: anIndex
^ self indexOfSubCollection: aSubCollection
startingAt: anIndex
ifAbsent: [ self error: 'element not found'. nil]
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last
^ (0 = self size) ifFalse: [ self at: self lastKey ]
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replaceFrom: start to: stop with: repcol
repcol inject: start
into: [:x :y | self at: x put: y. x + 1]
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replaceFrom: first to: stop with: repcol startingAt: repStart | i |
i <- 0 .
[(first + i) <= stop] whileTrue:
[self at: (first + i)
put: (repcol at: i + repStart).
i <- i + 1 ]
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reverseDo: aBlock | n m |
n <- self lastKey. m <- self firstKey.
[n >= m] whileTrue:
[(self includesKey: n) ifTrue:
[aBlock value: (self at: n)].
n <- n - 1].
^ nil
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reversed | newar i |
newar <- Array new: (i <- self size).
self do: [:x | newar at: i put: x. i <- i - 1].
^ self coerce: newar
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select: aBlock
^ self coerce:
(self inject: List new
into: [:x :y | (aBlock value: y)
ifTrue: [x addLast: y]. x ] )
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sort
^ self sort: [:x :y | x <= y]
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sort: sortBlock | index temp newArray |
newArray <- self asArray.
(2 to: newArray size) do:
[ :highIndex | index <- highIndex - 1.
[(index >= 1) and:
[(sortBlock value: (newArray at: index)
value: (newArray at: (index + 1))) not]]
whileTrue: [temp <- newArray at: index.
newArray at: index
put: (newArray at: index + 1).
newArray at: index + 1 put: temp.
index <- index - 1 ]].
^ self coerce: newArray
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with: aSequenceableCollection do: aBlock | arg1 arg2 |
arg1 <- self first. arg2 <- aSequenceableCollection first.
[ arg1 notNil] whileTrue:
[ aBlock value: arg1 value: arg2.
arg1 <- self next.
arg2 <- aSequenceableCollection next].
^ nil
]