In version 10.2 LocalSymbol can be used to create a persistent store of a variable. Once this is created I don't see a method to remove it. How are are they removed.

LocalSymbol["MySolution"] = 7

This will create a "MySolution" file in $LocalSymbolBase. All these attempts to remove it fail.


LocalSymbol["MySolution"] =.


DeleteFile[FileNameJoin[{$LocalSymbolBase, "MySolution"}]]

How are these symbols cleaned up? Similarly, how would you clean up a CloudSymbol?

  • 1
    $\begingroup$ Perhaps DeleteFile[LocalObject["MySolution", $LocalSymbolBase] ? $\endgroup$
    – ilian
    Commented Sep 18, 2015 at 19:28
  • 1
    $\begingroup$ @ilian Yes, that does work. Thanks. Not very intuitive, though. I hope this is added to LocalSymbol's documentation. Or better yet a DeleteLocalSymbol or RemoveLocalSymbol function. $\endgroup$
    – Edmund
    Commented Sep 18, 2015 at 19:51

1 Answer 1


Cloud symbols are stored in cloud objects (under $CloudSymbolBase) and local symbols are stored in local objects (under $LocalSymbolBase), which can be addressed using CloudObject and LocalObject respectively.

DeleteFile can be used for both cloud and local objects, for example

DeleteFile[CloudObject["MySolution", $CloudSymbolBase]]

DeleteFile[LocalObject["MySolution", $LocalSymbolBase]]
  • $\begingroup$ Is this bug known to WRI? I received no response when I reported it in July and it still crashes in v10.2 (CASE:3386543). $\endgroup$
    – Szabolcs
    Commented Sep 24, 2015 at 15:15
  • $\begingroup$ @Szabolcs Yes, it is fixed. $\endgroup$
    – ilian
    Commented Sep 24, 2015 at 15:19
  • $\begingroup$ @ilian Oh,you mean that you are a officail-person of wolfram-research?I'm a Chinese user,I want to post a annoy bug that the function of search is so bad in our local version of 10.2,even that I cannon search the MorphologicalTransform in the offical-documentation.And another bug is about the image-tool,it is a good tool to get a mask of pictrue.But it will freezed in evey time I take a draw.Fixed it as soon as,please. $\endgroup$
    – yode
    Commented Sep 24, 2015 at 21:24

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