it.grypho.scala.leonardo.matrix._MatrixIndex
Element access: at(A, i, j) returns the element at 1-based row i, column j.
Does NOT extend _MatrixOperation because the result is a scalar, not a matrix -- isMatrixShaped must not match it or the REPL would dispatch it as a matrix op. When the matrix is still symbolic but the indices are concrete, the element is extracted directly from the _Matrix literal so that at([[x, 2]], 1, 2) -> 2.0 without requiring the whole matrix to be dense.
Value parameters
col
the column index expression (1-based)
matrix
the matrix expression to index into
row
the row index expression (1-based)
Attributes
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Supertypes
trait Serializable
trait Product
trait Equals
class Object
trait Matchable
class Any
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Members list
Sub-expressions subject to recursive structural traversal. Binder positions (e.g. the differentiation variable) are excluded.
Sub-expressions subject to recursive structural traversal. Binder positions (e.g. the differentiation variable) are excluded.
Attributes
Definition Classes
Reduces this expression in the given environment.
Reduces this expression in the given environment.
Value parameters
env
variable bindings and display precision
Attributes
Returns
Right(v) when all free variables resolved to concrete values; Left(e) when reduction is partial or impossible
Definition Classes
Reconstructs the same node shape with replacement sub-expressions.
Reconstructs the same node shape with replacement sub-expressions.
Value parameters
newChildren
replacements in the same order and count as children
Attributes
Definition Classes
Returns a string representation of the object.
Returns a string representation of the object.
The default representation is platform dependent.
Attributes
Returns
a string representation of the object.
Definition Classes
Any
Attributes
Inherited from:
Product
Attributes
Inherited from:
Product
Cached set of free variable names; O(1) after the first access.
Cached set of free variable names; O(1) after the first access.
Attributes
Inherited from:
_Expression
