Module:US elections imagemap/utils: Difference between revisions

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Usage

String utilities for Module:US elections imagemap.

• stripspaces(str) strips spaces from str.
• split(str, sep) split str into a table of strings at each sep.

Unlike many other string utilities on Wikipedia, these are designed to be called from another Lua script easily — not to be called directly with {{#invoke}}.

The above documentation is transcluded from Module:US elections imagemap/utils/doc. (edit | history)
Editors can experiment in this module's sandbox (create | mirror) and testcases (create) pages.
Subpages of this module.

local p = {}

function p.stripspaces(str)
	return str:gsub("^%s*(.-)%s*$", "%1") -- trim spaces
end

function p.split(str, sep) -- split string by separator and return table
  sep = sep or "%s"
  local parts = {}
  for word in string.gmatch(str, "[^" .. sep .. "]+") do parts[#parts+1] = p.stripspaces(word) end
  return parts
end

function p.listmerge(t1, t2) -- only works on tables that are lists, not dictionaries
	for i, j in ipairs(t2) do
		table.insert(t1, j)
	end
	return t1
end

function p.getTableKeys(tab)
  local keyset = {}
  for k,v in pairs(tab) do
    keyset[#keyset + 1] = k
  end
  return keyset
end

return p