Expr.Name (NameOps)

Namespace: Polars.FSharp

Instance Methods

Map

Rename the output of an expression by mapping a function over the root name.

member Map(func: (string -> string)) : Expr

Parameters

Name	Type	Description
func	(string -> string)	Function that maps a root name to a new name.

---

MapFields

Rename fields of a struct by mapping a function over the field name(s).

member MapFields(func: (string -> string)) : Expr

Parameters

Name	Type	Description
func	(string -> string)	Function that maps a field name to a new name.

---

Prefix

Prefix the column name with a specified string.

member Prefix(prefix: string) : Expr

Parameters

Name	Type	Description
prefix	string	-

---

PrefixFields

Add a prefix to all field names of a struct.

member PrefixFields(prefix: string) : Expr

Parameters

Name	Type	Description
prefix	string	Prefix to add to the field name.

---

Replace

Replace matching regex/literal substring in the name with a new value.

member Replace(pattern: string, value: string, ?literal: bool) : Expr

Parameters

Name	Type	Description
pattern	string	A valid regular expression pattern, compatible with the regex crate.
value	string	String that will replace the matched substring.
literal	bool (optional)	Treat pattern as a literal string, not a regex.

---

Suffix

Suffix the column name with a specified string.

member Suffix(suffix: string) : Expr

Parameters

Name	Type	Description
suffix	string	-

---

SuffixFields

Add a suffix to all field names of a struct.

member SuffixFields(suffix: string) : Expr

Parameters

Name	Type	Description
suffix	string	Suffix to add to the field name.

---

ToLowercase

Make the root column name lowercase.

member ToLowercase : unit -> Expr

---

ToUppercase

Make the root column name uppercase.

member ToUppercase : unit -> Expr

---