How To Install perl-Eval-Closure on CentOS 7
Introduction
In this tutorial we learn how to install perl-Eval-Closure on CentOS 7.
What is perl-Eval-Closure
String eval is often used for dynamic code generation. For instance, Moose uses it heavily, to generate inlined versions of accessors and constructors, which speeds code up at runtime by a significant amount. String eval is not without its issues however - it’s difficult to control the scope it’s used in (which determines which variables are in scope inside the eval), and it’s easy to miss compilation errors, since eval catches them and sticks them in $@ instead. This module attempts to solve these problems. It provides an eval_closure function, which evals a string in a clean environment, other than a fixed list of specified variables. Compilation errors are rethrown automatically.
We can use yum or dnf to install perl-Eval-Closure on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install perl-Eval-Closure.
Install perl-Eval-Closure 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-Eval-Closure using yum by running the following command:
sudo yum -y install perl-Eval-Closure
Install perl-Eval-Closure 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-Eval-Closure using dnf by running the following command:
sudo dnf -y install perl-Eval-Closure
How To Uninstall perl-Eval-Closure on CentOS 7
To uninstall only the perl-Eval-Closure package we can use the following command:
sudo dnf remove perl-Eval-Closure
References
Summary
In this tutorial we learn how to install perl-Eval-Closure on CentOS 7 using yum and dnf.