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How to avoid overflow in expr. A * B - C * D
I need to compute an expression which looks like:
A*B - C*D , where their types are: signed long long int A, B, C, D;
Each number can be really big (not overflowing its type). While A*B could cause overflow, at same time expression A*B - C*D can be really small. How can I compute it correctly...
Exposing a port on a live Docker container
I'm trying to create a Docker container that acts like a full-on virtual machine. I know I can use the EXPOSE instruction inside a Dockerfile to expose a port, and I can use the -p flag with docker run to assign ports, but once a container is actually running, is there a command to open/map addi...
Can I use git diff on untracked files?
...ble to ask git diff to include untracked files in its diff output, or is my best bet to use git add on the newly created files and the existing files I have edited, then use:
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How can I add an empty directory to a Git repository?
How can I add an empty directory (that contains no files) to a Git repository?
35 Answers
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Is returning null bad design? [closed]
I've heard some voices saying that checking for a returned null value from methods is bad design. I would like to hear some reasons for this.
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Git - Undo pushed commits
I have a project in a remote repository, synchronized with a local repository (development) and the server one (prod). I've been making some commited changes already pushed to remote and pulled from the server. Now, I want to undo those changes. So I could just git checkout to the commit before th...
Rollback to an old Git commit in a public repo
How can I go about rolling back to a specific commit in git ?
11 Answers
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How to call a parent class function from derived class function?
How do I call the parent function from a derived class using C++? For example, I have a class called parent , and a class called child which is derived from parent. Within
each class there is a print function. In the definition of the child's print function I would like to make a call to the ...
Creating runnable JAR with Gradle
...unctionallity but now I switched to IntelliJ IDEA and Gradle for build automation.
9 Answers
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Animate change of view background color on Android
How do you animate the change of background color of a view on Android?
16 Answers
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