tomo-Table.has.3

(37 lines)
   1 '\" t
   2 .\" Copyright (c) 2025 Bruce Hill
   3 .\" All rights reserved.
   4 .\"
   5 .TH Table.has 3 2025-11-29 "Tomo man-pages"
   6 .SH NAME
   7 Table.has \- check for a key
   8 .SH LIBRARY
   9 Tomo Standard Library
  10 .SH SYNOPSIS
  11 .nf
  12 .BI Table.has\ :\ func(t:\ {K:V},\ key:\ K\ ->\ Bool)
  13 .fi
  14 .SH DESCRIPTION
  15 Checks if the table contains a specified key.
  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. 
  26 key	K	The key to check for presence. 
  27 .TE
  28 .SH RETURN
  29 `yes` if the key is present, `no` otherwise.
  30 
  31 .SH EXAMPLES
  32 .EX
  33 assert {"A": 1, "B": 2}.has("A") == yes
  34 assert {"A": 1, "B": 2}.has("xxx") == no
  35 .EE
  36 .SH SEE ALSO
  37 .BR Tomo-Table (3)