[mohitjoshi-hey]

Description

This PR addresses the ambiguity in stack operations when the stack is empty and the returned value happens to be the zero value of the generic type.

Changes

• Added TryPop() (T, bool) to return the top element and indicate whether the operation succeeded.
• Added TryPeek() (T, bool) to retrieve the top element without removing it and indicate whether the operation succeeded.
• Added tests covering empty stacks, populated stacks, and zero-valued elements.

Testing

• Tests pass using go test ./stack/....
• Existing stack functionality remains unchanged.

Closes #59

[zyedidia]

Please fix the formatting issue and add a test that covers the case where 0 is pushed and then popped with TryPop.

[mohitjoshi-hey]

I added those missing test cases covering TryPeek and TryPop when 0 is pushed/popped. And also formatted the files with gofmt

[zyedidia]

Thanks, please resolve the conflicts (caused by merging the other PR), and then I will merge.

[mohitjoshi-hey]

I hope this helps. Thanks!!