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--- manual:chapter6:system:cmd_newob [2021/10/02 06:54]
jojo1973 created
+++ manual:chapter6:system:cmd_newob [2021/10/04 04:54] (current)
jojo1973
@@ Line 34: / Line 34: @@
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-The ''NEWOB'' command replaces an object on the stack with a new copy of itself. The command may seem pointless, but it solves a very specific problem: creating a new copy of an object that originated in a larger composite object (such as a list) allows the garbage collection to __recover the memory associated with the larger object__ when that larger object is no longer needed.
+The ''NEWOB'' command replaces an object on the stack with a new copy of itself.\\
+\\
+The command may seem pointless, but it solves a very specific problem: when an object originated from a larger composite object is extracted and put on the stack it contains a reference to the parent object; even if the parent object is ''[[manual:chapter6:stack:cmd_drop|DROP]]''ped from the stack it keeps on living in the RAM, occupying precious resources.\\
+\\
+A copy of the extracted object created by ''NEWOB'' breaks this link and allows the ''[[manual:chapter6:system:cmd_garbage|GARBAGE]]'' collection to recover the memory associated with the larger object once it is not needed anymore.
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