How To Install perl-Context-Preserve on CentOS 7
Introduction
In this tutorial we learn how to install perl-Context-Preserve on CentOS 7.
What is perl-Context-Preserve
Sometimes you need to call a function, get the results, act on the results, then return the result of the function. This is painful because of contexts; the original function can behave different if it’s called in void, scalar, or list context. You can ignore the various cases and just pick one, but that’s fragile. To do things right, you need to see which case you’re being called in, and then call the function in that context. This results in 3 code paths, which is a pain to type in (and maintain). This module automates the process. You provide a coderef that is the “original function”, and another coderef to run after the original runs. You can modify the return value (aliased to @_) here, and do whatever else you need to do. ‘wantarray’ is correct inside both coderefs; in “after”, though, the return value is ignored and the value ‘wantarray’ returns is related to the context that the original function was called in.
We can use yum or dnf to install perl-Context-Preserve on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install perl-Context-Preserve.
Install perl-Context-Preserve on CentOS 7 Using yum
Update yum database with yum using the following command.
sudo yum makecache
After updating yum database, We can install perl-Context-Preserve using yum by running the following command:
sudo yum -y install perl-Context-Preserve
Install perl-Context-Preserve on CentOS 7 Using dnf
If you don’t have dnf installed you can install DNF on CentOS 7 first.
Update yum database with dnf using the following command.
sudo dnf makecache
After updating yum database, We can install perl-Context-Preserve using dnf by running the following command:
sudo dnf -y install perl-Context-Preserve
How To Uninstall perl-Context-Preserve on CentOS 7
To uninstall only the perl-Context-Preserve package we can use the following command:
sudo dnf remove perl-Context-Preserve
References
Summary
In this tutorial we learn how to install perl-Context-Preserve on CentOS 7 using yum and dnf.
