utils_expr: Utility functions of expr

In chriszheng2016/zstmodelr: Stock Factor Models for China Stock Market Investment

Description

Utility functions to handle expr basing on rlang, which is used to facilitate defining indicator.

Usage

create_expr(expr)

find_syms(expr, pattern = NULL, ...)

Arguments

expr	A expr or list of exprs or string to parse as expr.
pattern	A character of regular rule for matching.
...	Extra arguments to be passed to purrr::map.

Functions

• create_expr: create a expr for evaluation from expr, list of exprs, strings.

• find_syms: Find symbols in expr by matching pattern.

chriszheng2016/zstmodelr documentation built on June 13, 2021, 8:59 p.m.