Editing Module talk:Yesno (section)

== Doc questions (blank string true/false) ==

# In the documentation, I changed the "nil" example into singular. Or are there are other forms of nil covered and to be documented? (uppercase?, a non-initialised variable?).
# The last paragraph is about the <code><nowiki>''</nowiki></code> value (blank string). It says:
:''Although the blank string usually evaluates to false in wikitext, it evaluates to true in Lua.'' Is this correct here?

:According to this same documentation, it is treated as "not a boolean". It says it returns the default (parameter) value, not the 'true' value. That is: not recognised as a boolean, iic. And elsewhere the doc says "<code><nowiki>yesno('')</nowiki></code> returns nil". (I did not test any). -[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 09:06, 8 April 2014 (UTC)

::On nil: there is only one kind of nil. However, there may be many variables in any given module whose value may be nil, hence "nil values". There is no "uppercase nil", and in Lua there is no such thing as a non-initialised variable, as variables are initialised when they are first used. On the blank string: saying that it "evaluates to true" is talking about when it is used in if/then statements or with the <code>and</code> and <code>or</code> operators. For example, the following code will return true:
<syntaxhighlight lang="lua">
if '' then
	return true
else
	return false
end
</syntaxhighlight>
::Does that clear things up? — '''''[[User:Mr. Stradivarius|<span style="color: #194D00; font-family: Palatino, Times, serif">Mr. Stradivarius</span>]]''''' <sup>[[User talk:Mr. Stradivarius|♪ talk ♪]]</sup> 09:26, 8 April 2014 (UTC)
:::Does it clear things up? Don't know. Documentation did not change. -[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 12:10, 8 April 2014 (UTC)
::::I mean, do you understand it now? — '''''[[User:Mr. Stradivarius|<span style="color: #194D00; font-family: Palatino, Times, serif">Mr. Stradivarius</span>]]''''' <sup>[[User talk:Mr. Stradivarius|♪ talk ♪]]</sup> 12:34, 8 April 2014 (UTC)