expression_list: Extract symbols from an expression of symbols and operators
Description
Extract symbols from an expression of symbols and operators
Usage
expression_list(expr, seps = "+")quosure_list(expr, seps = "+", env = caller_env())
symbol_string_list(expr, seps = "+")
Arguments
seps
Operators to consider as separators
env
Environment for the created quosure
Value
A list of all symbols in the expression, as symbol, quosure or text.
Examples
Run this code# NOT RUN {
expression_list(a+b+c+d)
# }
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