Expr.Meta (MetaOps)

Namespace: Polars.FSharp

Instance Methods

AsExpression

Return the original expression.

member AsExpression : unit -> Expr

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FormatTree

Format the expression as a tree (plain or Graphviz dot).

member FormatTree(?displayAsDot: bool, ?schema: PolarsSchema) : string

Parameters

Name	Type	Description
displayAsDot	bool (optional)	-
schema	PolarsSchema (optional)	-

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HasMultipleOutputs

Indicate if this expression expands into multiple expressions.

member HasMultipleOutputs : unit -> bool

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IsColumn

Indicate if this expression is a basic (non-regex) unaliased column.

member IsColumn : unit -> bool

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IsColumnSelection

Indicate if this expression only selects columns (optionally with aliasing).

member IsColumnSelection(?allowAliasing: bool) : bool

Parameters

Name	Type	Description
allowAliasing	bool (optional)	If False (default), any aliasing is not considered to be column selection.

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IsLiteral

Indicate if this expression is a literal value (optionally aliased).

member IsLiteral(?allowAliasing: bool) : bool

Parameters

Name	Type	Description
allowAliasing	bool (optional)	-

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IsRegexProjection

Indicate if this expression expands to columns that match a regex pattern.

member IsRegexProjection : unit -> bool

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NotEquals

Indicate if this expression is NOT the same as another expression.

member NotEquals(other: Expr) : bool

Parameters

Name	Type	Description
other	Expr	-

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OutputName

Return the output name of the expression.

member OutputName : unit -> string

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Pop

Pop the latest expression and return the input(s) as an array of Expr.

member Pop : unit -> Expr[]

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RootNames

Get a list with the root column name(s).

member RootNames : unit -> string[]

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UndoAliases

Remove any aliases from this expression and return the inner expression.

member UndoAliases : unit -> Expr

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