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--- 4rpl:commands:delete [2021/01/13 22:37] – created virgilw
+++ 4rpl:commands:delete [2025/02/14 14:57] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-~~NOTOC~~
+ <=[[4rpl:start| Index]]
-<=[[4rpl:start| Index]]
-=== Syntax ===
+====== Delete Variable ======
---VAR
-=== Description ===
+===== Syntax =====
-Deletes VAR (make it as if the variable was never assigned).
-=== Examples ===
+<nowiki>--VARNAME</nowiki>
-<code 4rpl>42 ->TheAnswer
-trace(<-TheAnswer) #prints out 42
+===== Description =====
---TheAnswer
-trace(<-TheAnswer) #prints out 0
+Deletes the variable with name **VARNAME **(make it as if the variable was never assigned).
+===== Examples =====
+<code 4rpl>
+->TheAnswer
+<-TheAnswer Trace # prints out 42
+--TheAnswer # delete variable
+if (-?TheAnswer) # checks if the variable exists
+    "We have the answer" Trace
+else
+    "We do not have the answer" Trace
+endif
 </code>
+~~NOTOC~~

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