From d0d6117176d68b2345d36e81ccdaa447e9caa724 Mon Sep 17 00:00:00 2001
From: Nathanael Sensfelder <SpamShield0@MultiAgentSystems.org>
Date: Tue, 22 Dec 2020 04:08:34 +0100
Subject: Moving to Hugo.

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+---
+title: Conditionals
+---
+This page presents the computation operators that allow a choice depending on
+some condition. All possible returned values must be of the same type.
+
+### IF-ELSE
+{{< fatecode >}}(if_else [BOOL] [C0 = COMPUTATION] [C1 = COMPUTATION]){{< /fatecode >}}
+
+Returns `C0` is `[BOOL]` yields true, `C1` otherwise.
+
+### COND
+{{< fatecode >}}(cond ([B0 = BOOL] [C0 = COMPUTATION]) ... ([BN = BOOL] [CN = COMPUTATION])){{< /fatecode >}}
+
+Returns `<Ci>`, such that `<Bi>` is the first to hold true. If there is not such
+`Bi`, returns `[CN]`.
+
+### SWITCH
+{{< fatecode >}}(switch [T = COMPUTATION] ([V0 = COMPUTATION] [C0 = COMPUTATION]) ... ([VN = BOOL] [CN = COMPUTATION]) [D = COMPUTATION]){{< /fatecode >}}a
+
+Returns the first `Ci` such that `Vi` is equal to `T`. If there is not such
+`Vi`, returns `[D]`.
+
+## Examples
+{{< fatecode >}}(cond
+   ((false) (false))
+   ((false) (false))
+   ((true)
+      (cond
+         ((false) (false))
+         ((true) (not (is_member 3 test_list)))
+         ((true) (false))
+      )
+   )
+)
+{{< /fatecode >}}
+
+{{< fatecode >}}(switch 3
+   (0 (false))
+   (1 (false))
+   (3 (true))
+   (2 (false))
+   (false)
+)
+{{< /fatecode >}}
+
+{{< fatecode >}}(if_else (true)
+   (if_else (false)
+      (assert (false) FAILED: instruction ifelse E)
+      (set test_var (true))
+   )
+   (assert (false) FAILED: instruction ifelse F)
+)
+{{< /fatecode >}}
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