Inverted syntax: Difference between revisions
Latitude language added
Thundergnat (talk | contribs) (Rename Perl 6 -> Raku, alphabetize, minor clean-up) |
Mercerenies (talk | contribs) (Latitude language added) |
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Do I need an umbrella? Yes
</pre>
=={{header|Latitude}}==
Latitude, by default, does not support inverted conditionals, as its two primary means of conditional branching both involve the condition first.
<lang latitude>local 'raining = True.
local 'needUmbrella = False.
if (raining) then {
needUmbrella = True.
} else {}.
{ raining. } ifTrue {
needUmbrella = True.
}.</lang>
However, such constructs can easily be added to the language.
<lang latitude>#'Method when := {
localize.
if ($1) then {
this.
} else { }.
}.
#'Method unless := {
#'self when ($1 not).
}.
;; Example usage
{ needUmbrella = True. } when (raining).
{ needUmbrella = True. } unless (raining not).</lang>
Likewise, inverted assignment syntax is not supported natively, but it can be approximated in-language, using a definition similar to that of the built-in <code>local=</code>.
<lang latitude>global let= := { self slot ($2) = #'$1. }.
local 'a = 6.
println: a. ;; 6
let 6 = 'b.
println: b. ;; 6</lang>
=={{header|M2000 Interpreter}}==
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