code / tomo

   1 '\" t
   2 .\" Copyright (c) 2026 Bruce Hill
   3 .\" All rights reserved.
   4 .\"
   5 .TH Table.with_fallback 3 2026-03-08 "Tomo man-pages"
   6 .SH NAME
   7 Table.with_fallback \- return a table with a new fallback
   8 .SH LIBRARY
   9 Tomo Standard Library
  10 .SH SYNOPSIS
  11 .nf
  12 .BI Table.with_fallback\ :\ func(t:\ {K:V},\ fallback:\ {K:V}?\ ->\ {K:V})
  13 .fi
  14 .SH DESCRIPTION
  15 Return a copy of a table with a different fallback table.
  16 
  17 
  18 .SH ARGUMENTS
  19 
  20 .TS
  21 allbox;
  22 lb lb lbx
  23 l l l.
  24 Name	Type	Description
  25 t	{K:V}	The table whose fallback will be replaced. 
  26 fallback	{K:V}?	The new fallback table value. 
  27 .TE
  28 .SH RETURN
  29 The original table with a different fallback.
  30 
  31 .SH EXAMPLES
  32 .EX
  33 t := {"A": 1; fallback={"B": 2}}
  34 t2 := t.with_fallback({"B": 3})
  35 assert t2["B"] == 3
  36 t3 := t.with_fallback(none)
  37 assert t3["B"] == none
  38 .EE
  39 .SH SEE ALSO
  40 .BR Tomo-Table (3)