• rlang Book Club
  • Welcome
    • Pace
    • Format
  • 1 Introduction
    • 1.1 Hi, my name is…
    • 1.2 What the heck is rlang?
    • 1.3 Overall doc layout
    • 1.4 Article categories
    • 1.5 Reference categories
    • 1.6 How to prepare (maybe?)
    • 1.7 Meeting Videos
      • 1.7.1 Cohort 1
  • 2 Tidy Evaluation
    • Problem Part 1: reference
    • Problem Part 2: evaluation
    • How data masking solves problem 1
      • Elevate the data environment
      • Disambiguate references
    • How defusal/injection solve problem 2
      • Defuse
      • Inject
      • Summary of how data masking works
    • Data masking programming patterns : general problem
    • Data masking programming patterns
    • Argument behavior
    • Typology of argument behavior
    • Argument behavior in the wild
      • Developers can signal argument behavior via roxygen2 tags…
      • … and they have
    • Overview of data masking programming patterns
    • Forwarding patterns
    • Forwarding with {{
    • Forwarding with ...
    • Names patterns
    • One name
    • Multiple names
    • Bridge patterns
    • selection -> data-mask, via across()
    • names -> data-mask, via across(all_of())
    • data-mask -> selection, via transmute
    • Guide: Double Evaluation
    • Tidy Eval: Notes
      • Injection Operators Out Of Context
    • {{ on regular objects
    • Function references
    • Meeting Videos
      • Cohort 1
  • 3 Metaprogramming
    • Should we care about defused expressions?
    • Why “defuse”?
    • What are the 3 types of defused expressions?
    • How can we create defused expressions?
    • How else can we create defused expressions?
    • Function references
    • Meeting Videos
      • Cohort 1
  • 4 Metaprogramming Part 2
    • What the heck is a quosure?
    • Why do I need quosures?
    • Why? (In Practice)
    • Okay, but what is a quosure?
    • Quosure Helpers
    • Formulas
    • Formula Helpers
    • Meeting Videos
      • Cohort 1
  • 5 Conditions & Error Handling
    • Brief intro to cli_*()
    • Error message content
    • Error message content: Problem statement
    • Error message content: Error details
    • Error message content: Grab bag
    • More about cli: Markup
    • More about cli: Pluralization
    • More about cli: Progress bars
    • rlang to cli
    • Customizing cli
    • Leftovers
    • Meeting Videos
      • Cohort 1
  • 6 Objects
    • SLIDE 1
    • Meeting Videos
      • Cohort 1
  • 7 Session
    • SLIDE 1
    • Meeting Videos
      • Cohort 1
  • 8 Function Arguments
    • SLIDE 1
    • Meeting Videos
      • Cohort 1
  • Published with bookdown

rlang Book Club

Function references

  • expr()
  • enquo() enquos()
  • base::eval()
  • eval_tidy()
  • eval_bare()
  • quo_is_missing() quo_is_symbol() quo_is_call() quo_is_symbolic() quo_is_null() quo_get_expr() quo_get_env() quo_set_expr() quo_set_env()
  • sym() syms() data_sym() data_syms()
  • base::call()
  • call2()
  • base::bquote()
  • base::substitute() base::quote() base::enquote()
  • parse_expr() parse_exprs() parse_quo() parse_quos()
  • expr_print() expr_deparse()
  • is_expression() is_syntactic_literal() is_symbolic()