> For the complete documentation index, see [llms.txt](https://boxlang.ortusbooks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structdelete.md).

# StructDelete

Deletes a key from a struct

## Method Signature

```
StructDelete(struct=[modifiableStruct], key=[any])
```

### Arguments

| Argument | Type               | Required | Description       | Default |
| -------- | ------------------ | -------- | ----------------- | ------- |
| `struct` | `modifiableStruct` | `true`   | The struct target |         |
| `key`    | `any`              | `true`   | The key to delete |         |

## Examples

### Remove a key from a struct

Creates a struct then removes a key

[Run Example](https://try.boxlang.io/?code=eJwrzs9NDS4pKk0uUbBVqFbg4nRUsFIw1OHidALSRly11lzFYFmX1JzUklQNhWK4eh0FpUQlBU1rrvKizJJUl9LcAmRZkAQA87UcEg%3D%3D)

```java
someStruct = { 
	A : 1,
	B : 2
};
structDelete( someStruct, "a" );
writeDump( someStruct );

```

Result: Struct with one key-value pair: B 2

### Remove a key from a struct using the member function

Invoking the delete function on a struct is the same as running structDelete.

[Run Example](https://try.boxlang.io/?code=eJwrzs9NDS4pKk0uUbBVqFbg4nRUsFIw1OHidALSRly11lzFcBV6Kak5qSWpGgpKiUoKmtZc5UWZJakupbkFGgoIRSAJACeFGW8%3D)

```java
someStruct = { 
	A : 1,
	B : 2
};
someStruct.delete( "a" );
writeDump( someStruct );

```

Result: Struct with one key-value pair: B 2

### Additional Examples

[Run Example](https://try.boxlang.io/?code=eJxljsEKgkAURdfNV1xmo4HgvnAhCtGqwKD1qC8URyfGMYno39NxCqTV43LuuxzR1a2QPSK8wDbJ6YodeKsUD9jmfDzMSdVdM8ckvlhIauTsvWdhiKxSI4pBa%2BoMxDLF0qG9%2B5AiJxnxZA15gIfQkUvY2pWUJBmCqQgNPeEVwni4adWiN3ooDMvsWWr%2BdyoAn4rcbViTH5kAKtEjJ%2BpQ2r9y7RU7g7E2la271r%2FgB5NlXFk%3D)

```java
animals = { 
	COW : "moo",
	PIG : "oink",
	CAT : "meow"
};
// Show current animals
Dump( label="Current animals", var=animals );
// Delete the key 'cat' from struct
StructDelete( animals, "cat" );
// Show animals, cat has been deleted
Dump( label="Animals with cat deleted", var=animals );

```

## Related

* [StructAppend](/boxlang-language/reference/built-in-functions/struct/structappend.md)
* [StructClear](/boxlang-language/reference/built-in-functions/struct/structclear.md)
* [StructCopy](/boxlang-language/reference/built-in-functions/struct/structcopy.md)
* [StructEach](/boxlang-language/reference/built-in-functions/struct/structeach.md)
* [StructEquals](/boxlang-language/reference/built-in-functions/struct/structequals.md)
* [StructEvery](/boxlang-language/reference/built-in-functions/struct/structevery.md)
* [StructFilter](/boxlang-language/reference/built-in-functions/struct/structfilter.md)
* [StructFind](/boxlang-language/reference/built-in-functions/struct/structfind.md)
* [StructFindKey](/boxlang-language/reference/built-in-functions/struct/structfindkey.md)
* [StructFindValue](/boxlang-language/reference/built-in-functions/struct/structfindvalue.md)
* [StructGet](/boxlang-language/reference/built-in-functions/struct/structget.md)
* [StructGetMetadata](/boxlang-language/reference/built-in-functions/struct/structgetmetadata.md)
* [StructInsert](/boxlang-language/reference/built-in-functions/struct/structinsert.md)
* [StructIsCaseSensitive](/boxlang-language/reference/built-in-functions/struct/structiscasesensitive.md)
* [StructIsOrdered](/boxlang-language/reference/built-in-functions/struct/structisordered.md)
* [StructKeyArray](/boxlang-language/reference/built-in-functions/struct/structkeyarray.md)
* [StructKeyExists](/boxlang-language/reference/built-in-functions/struct/structkeyexists.md)
* [StructKeyList](/boxlang-language/reference/built-in-functions/struct/structkeylist.md)
* [StructKeyTranslate](/boxlang-language/reference/built-in-functions/struct/structkeytranslate.md)
* [StructMap](/boxlang-language/reference/built-in-functions/struct/structmap.md)
* [StructNew](/boxlang-language/reference/built-in-functions/struct/structnew.md)
* [StructNone](/boxlang-language/reference/built-in-functions/struct/structnone.md)
* [StructReduce](/boxlang-language/reference/built-in-functions/struct/structreduce.md)
* [StructSome](/boxlang-language/reference/built-in-functions/struct/structsome.md)
* [StructSort](/boxlang-language/reference/built-in-functions/struct/structsort.md)
* [StructToQueryString](/boxlang-language/reference/built-in-functions/struct/structtoquerystring.md)
* [StructToSorted](/boxlang-language/reference/built-in-functions/struct/structtosorted.md)
* [StructUpdate](/boxlang-language/reference/built-in-functions/struct/structupdate.md)
* [StructValueArray](/boxlang-language/reference/built-in-functions/struct/structvaluearray.md)


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