How to Create a Bash Function that Returns an Array

This approach involves the following three steps:

1. Convert the array with 'declare -p' and save the output in a variable. ...
2. Use the echo builtin to pass the variable to a function or to pass it back from there. ...
3. Finally, recreate the array where it is passed to using the eval and the 'declare -a' builtins.

1. How do you return an array from a function?
2. Can function return array address?
3. How do I return a function in bash?
4. Which of the array method will return an array?
5. How do I return an array from a function in C++?
6. How do you return an array from a function in Python?
7. Can you return an array?
8. Are arrays passed by reference in C++?
9. How do you reverse an array in C++?
10. How do you do if in bash?
11. What is declare in bash?
12. How do I run a bash script?

How do you return an array from a function?

Returning array by passing an array which is to be returned as a parameter to the function.

1. #include <stdio.h>
2. int *getarray(int *a)
3. printf("Enter the elements in an array : ");
4. for(int i=0;i<5;i++)
5. scanf("%d", &a[i]);

Can function return array address?

C programming does not allow to return an entire array as an argument to a function. However, you can return a pointer to an array by specifying the array's name without an index.

How do I return a function in bash?

When a bash function ends its return value is its status: zero for success, non-zero for failure. To return values, you can set a global variable with the result, or use command substitution, or you can pass in the name of a variable to use as the result variable.

Which of the array method will return an array?

We can return an array in Java from a method in Java. Here we have a method createArray() from which we create an array dynamically by taking values from the user and return the created array.

How do I return an array from a function in C++?

C++ does not allow to return an entire array as an argument to a function. However, you can return a pointer to an array by specifying the array's name without an index.

How do you return an array from a function in Python?

“how to return an array in python” Code Answer

1. def my_function():
2. result = []
3. #body of the function.
4. return result.

Can you return an array?

Remember: A method can return a reference to an array. The return type of a method must be declared as an array of the correct data type.

Are arrays passed by reference in C++?

The truth is, many books get this wrong as well; the array is not "passed" at all, either "by pointer" or "by reference". In fact, because arrays cannot be passed by value due to an old C restriction, there is some special magic that happens with arrays as function arguments.

How do you reverse an array in C++?

1. #include <iostream> #include <algorithm>
2. using namespace std;
3. // Utility function to print contents of an array. void print(int arr[], int n)
4. for (int i = 0; i < n; i++)
5. cout << arr[i] << " ";
6. // Utility function to reverse elements of an array. void reverse(int arr[], int n)

How do you do if in bash?

A Shell script usually needs to test if a command succeeds or a condition is met. In Bash, this test can be done with a Bash if statement.
...
What are the Bash Conditional Expressions?

What is declare in bash?

'declare' is a bash built-in command that allows you to update attributes applied to variables within the scope of your shell. In addition, it can be used to declare a variable in longhand. Lastly, it allows you to peek into variables.

How do I run a bash script?

Make a Bash Script Executable

1. 1) Create a new text file with a . sh extension. ...
2. 2) Add #!/bin/bash to the top of it. This is necessary for the “make it executable” part.
3. 3) Add lines that you'd normally type at the command line. ...
4. 4) At the command line, run chmod u+x YourScriptFileName.sh. ...
5. 5) Run it whenever you need!