Collection

Collections are general purpose data structures. Growable collections are implemented using #become:.

Of interest are a few methods implemented here that are not part of some other Smalltalks:

#accumulate:into:
This is useful for concatenating several collections (usually Strings).

#allSatisfy: and #anySatisfy:
These work as generalized AND or OR statements. Some other Smalltalks call these #conform: and #contains: (respectively).

#do:separatedBy:
Like #do:, but evaluates the 'separatedBy' block between every evaluation of the 'do' block.

#select:do:
Like #select: followed by #do:, but avoids creating an intermediate collection.

Methods defined in Collection:

Methods for accessing:

• capacity
• size
  Everyone reimplements this, so this implementation was removed to save space.
• species

Methods for adding/removing:

• add: collection
  By default, collections do not support #add:.
• addAll: collection
• remove: object
• remove: object ifAbsent: exceptionBlock
• removeAll: collection

Methods for comparing:

• = collection
• hash
• shallowEquals: collection

Methods for converting:

• asArray
• asByteArray
• asList
• asSet
• asString

Methods for copying:

• copyEmpty

Methods for enumerating:

• accumulate: block into: collection
  Evaluate block---which must return a collection---for each element of the receiver. Accumulate all results into the given collection.
• allSatisfy: block
  #conform: in non-ANSI
• anySatisfy: block
  #contains: in non-ANSI
• collect: block
• detect: block
• detect: block ifNone: exceptionBlock
• do: block
• do: block separatedBy: betweenBlock
• inject: initial into: block
  Answer the last value of #scan:into:
• reject: block
  #reject: is used much less frequently than #select:, so it is defined once here, in terms of #select:.
• select: block
  This is implemented too differently in different subclasses to bother defining a default implementation here.
• select: block do: action
  Like select: then do:, but avoids creating an intermediate collection.

Methods for predicates:

• identityIncludes: object
• includes: object
• isArrayed
• isEmpty
• notEmpty

Methods for streaming:

• readStream
• writeStream