Module: DaruLite::Vector::Setable

Included in:
DaruLite::Vector
Defined in:
lib/daru_lite/vector/setable.rb

Instance Method Summary collapse

Instance Method Details

#[]=(*indexes, val) ⇒ Object

Just like in Hashes, you can specify the index label of the DaruLite::Vector and assign an element an that place in the DaruLite::Vector.

Usage

v = DaruLite::Vector.new([1,2,3], index: [:a, :b, :c])
v[:a] = 999
#=>
##<DaruLite::Vector:90257920 @name = nil @size = 3 >
#    nil
#  a 999
#  b   2
#  c   3



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# File 'lib/daru_lite/vector/setable.rb', line 36

def []=(*indexes, val)
  cast(dtype: :array) if val.nil? && dtype != :array

  guard_type_check(val)

  modify_vector(indexes, val)

  update_position_cache
end

#set_at(positions, val) ⇒ Object

Change value at given positions

Examples:

dv = DaruLite::Vector.new 'a'..'e'
dv.set_at [0, 1], 'x'
dv
# => #<DaruLite::Vector(5)>
#   0   x
#   1   x
#   2   c
#   3   d
#   4   e

Parameters:

  • positions (Array<object>) —

    positional values

  • val (object) —

    value to assign



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# File 'lib/daru_lite/vector/setable.rb', line 17

def set_at(positions, val)
  validate_positions(*positions)
  positions.map { |pos| @data[pos] = val }
  update_position_cache
end