# Overview
The **`remove_subseq` method** is a sequence manipulation method that is used to remove all subsequences found in a  sequence.  

This method works by checking a sequence target for any subsequnce `subseq` and removing all occurrences of subsequence found. This method also provides an option to replace the found `subseq` with other values `alt_value`. 

## Syntax
```
remove_subseq(target, alt_value)
``` 
## Parameter

* **`target`**: This is the sequence from which we're interested in removing subsequences. 

* **`alt_value`**: This is an object value that will be used to replace any subsequence encountered in `target`. It is optional and has a default value of `SET_NOALT`. This means that no alternative value will be used to replace the subsequence if it is found. 

## Return value

The value returned is a sequence with all subsequences removed. The returned value contains just the atoms from `target` and the optional `alt_value` that replaces the removed subsequence.

## Code
In the code snippet below, we check a few sequence values for subsequences, using the `remove_subseq()` method to remove the subsequences found.

include std/sequence.e

--declare variables
sequence target1, target2, output1, output2

--assign values to variables
target1 = {1,2,3,{4,5},{6,7,8},{9,{10,11},12}}
target2 = {3,5,6,{7,5},8,9}

output1 = remove_subseq(target1) --no alt_value provided
output2 = remove_subseq(target2,39) --alt_value of 3 provided

--print to screen the output of using remove_subseq
print(1,output1)
puts(1,"\n")
print(1,output2)

# 
>It is important to point out that `alt_value` is an object. An **object** is either an atom or a sequence. The atoms, in the current definition of the language, are in fact numbers, and a sequence is a dynamic collection of atoms and other sequences, i.e. of any kind of object at all. 

## Explanation

* Line 1: We include the `sequence.e` module. 

* Line 4: We declare variables.
* Lines 7–8: We assign values to the variables.
* Lines 10–11: We use the `remove_subseq()` method and store its returned value in the variables `output1` and `output2`.
* Lines 14 and 16: We print the output to the screen.

What is the remove_subseq method in Euphoria?

Overview

Syntax

Parameter

Return value

Code

Explanation