Replace Symbols in an Expression

Replace symbols in an expression

replace_symbol_in_expr(expression, target, replace)

Arguments

expression

Expression

Permitted values

a quoted expression, e.g., created by expr()

Default value

none

target

Target symbol

Permitted values

an unquoted symbol, e.g., AVAL

Default value

none

replace

Replacing symbol

Permitted values

an unquoted symbol, e.g., AVAL

Default value

none

Value

The expression where every occurrence of the symbol target is replaced by replace

See also

Helpers for working with Quosures: add_suffix_to_vars(), expr_c(), replace_values_by_names()

Author

Stefan Bundfuss

Examples

library(rlang)

replace_symbol_in_expr(expr(AVAL), target = AVAL, replace = AVAL.join)
#> AVAL.join
replace_symbol_in_expr(expr(AVALC), target = AVAL, replace = AVAL.join)
#> AVALC
replace_symbol_in_expr(expr(desc(AVAL)), target = AVAL, replace = AVAL.join)
#> desc(AVAL.join)
replace_symbol_in_expr(expr(if_else(AVAL > 0, AVAL, NA)), AVAL, AVAL.join)
#> if_else(AVAL.join > 0, AVAL.join, NA)