#return-value

Solution: How to return a string value from a bash function #it #programming #dev

How to return a string value from a bash function

I’d like to return a string from a bash function.

I’ll write the example in java to show what I’d like to do:

public String getSomeString() { return "tadaa"; } String variable = getSomeString();

The example below works in bash, but is there a better way to do this?

function getSomeString { echo "tadaa" } VARIABLE=$(getSomeString)

Answer [by P…

Solution: How do I make the method return type generic? #solution #fix #development

How do I make the method return type generic?

Consider this example (typical in OOP books): I have an Animal class, where each Animal can have many friends. And subclasses like Dog, Duck, Mouse etc which add specific behavior like bark(), quack() etc.

Here’s the Animal class:

public class Animal { private Map friends = new HashMap(); public void addFriend(String name, Animal animal){…

Fixed What should main() return in C and C++? #dev #it #asnwer

What should main() return in C and C++?

What is the correct (most efficient) way to define the main() function in C and C++ — int main() or void main() — and why? If int main() then return 1 or return 0?

There are numerous duplicates of this question, including:

What are the valid signatures for C’s main() function?

The return type of main() function

Difference between void main() and int main()?

How to: Should functions return null or an empty object?

Should functions return null or an empty object?

What is the best practice when returning data from functions. Is it better to return a Null or an empty object? And why should one do one over the other?

Consider this:

public UserEntity GetUserById(Guid userId) { //Imagine some code here to access database..... //Check if data was returned and return a null if none found if (!DataExists) return…

How to: How can I index a MATLAB array returned by a function without first assigning it to a local variable?

How can I index a MATLAB array returned by a function without first assigning it to a local variable?

For example, if I want to read the middle value from magic(5), I can do so like this:

M = magic(5); value = M(3,3);

to get value == 13. I’d like to be able to do something like one of these:

value = magic(5)(3,3); value = (magic(5))(3,3);

to dispense with the intermediate variable. However,…

How to: How to return a string value from a bash function

How to return a string value from a bash function

I’d like to return a string from a bash function.

I’ll write the example in java to show what I’d like to do:

public String getSomeString() { return "tadaa"; } String variable = getSomeString();

The example below works in bash, but is there a better way to do this?

function getSomeString { echo "tadaa" } VARIABLE=$(getSomeString)

Answer: How…

How to: How do I make the method return type generic?

How do I make the method return type generic?

Consider this example (typical in OOP books): I have an Animal class, where each Animal can have many friends. And subclasses like Dog, Duck, Mouse etc which add specific behavior like bark(), quack() etc.

Here’s the Animal class:

public class Animal { private Map friends = new HashMap(); public void addFriend(String name, Animal animal){…

How to: What should main() return in C and C++?

What should main() return in C and C++?

What is the correct (most efficient) way to define the main() function in C and C++ — int main() or void main() — and why? If int main() then return 1 or return 0?

There are numerous duplicates of this question, including:

What are the valid signatures for C’s main() function?

The return type of main() function

Difference between void main() and int main()?