What is the primary purpose of a version control system?
- A version control system is used for code collaboration.
- A version control system is used for debugging code.
- A version control system is used for file backup.
- A version control system is used for tracking changes in code.
The primary purpose of a version control system, like Git, is to track changes in code and manage different versions of files. It allows developers to collaborate, review changes, and revert to previous versions if needed.
Your team decides to enforce a linear history on the main branch. Which Git feature would be most appropriate to achieve this?
- merge
- rebase
- squash
- cherry-pick
The correct option is rebase. Rebasing helps create a linear history by incorporating changes from one branch onto another, eliminating unnecessary merge commits. This promotes a cleaner and more straightforward history, especially on the main branch.
What are the implications of force pushing (git push --force) in a collaborative Git repository?
- It's a standard push operation
- It overwrites the remote branch with local changes
- It creates a new branch remotely
- It prompts collaborators for approval
Force pushing overwrites the remote branch with local changes, potentially causing conflicts for collaborators. It should be used cautiously to avoid disrupting others' work.
To handle large codebases in enterprise environments, Git can be integrated with ________ for enhanced performance.
- Jenkins
- Docker
- Bitbucket
- GitLab
Git can be integrated with Docker for enhanced performance in handling large codebases. Docker provides containerization, allowing consistent environments across different stages of the development lifecycle. This integration aids in efficient deployment and scalability.
The function _______ is used to merge two sorted ranges in the C++ STL.
- combine
- concatenate
- merge
- join
The merge algorithm in C++ STL is used to merge two sorted ranges into a single, sorted range. Both input ranges should be sorted for the merge algorithm to work correctly.
The result of 5.5 + 2.5 in C++ is _______.
- 8
- 7.5
- 8
- 7
In C++, the addition of two floating-point numbers (like 5.5 and 2.5) will result in another floating-point number, which is 8.0 in this case.
Which of the following is not a type of iterator in C++ STL?
- Random access
- Bidirectional
- Dynamic
- Forward
The C++ STL provides several types of iterators like random access, bidirectional, and forward iterators. However, there is no iterator type named "Dynamic." Iterators are powerful tools in STL, allowing operations like traversal, reading, and writing to elements of container objects.
The function signature in C++ includes the function name and the _______.
- return type
- class name
- library
- parameters
A function signature in C++ is determined by its name and its parameter list. The return type is not considered a part of the function's signature.
The _______ keyword is used to include standard libraries in a C++ program.
- import
- include
- namespace
- return
In C++, the "include" keyword is used to include header files, which contain the declarations for the standard libraries. It's vital for utilizing predefined functions and classes, thus facilitating easier and more efficient coding.
Which keyword is often advised against using due to its potential to make code less readable and maintainable?
- class
- public
- goto
- private
The goto keyword allows for arbitrary jumps in code, which can make the code's flow hard to follow, leading to decreased readability and maintainability. Although it's available in C++, its use is generally discouraged in modern programming practices.