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P5-module-installed-tiny
Jul 20, 2023
Check if a module is installed, with as little code as possible
To check if a module is installed available, generally the simplest way is to try to require it. However, this actually loads the module. There are some cases where this is not desirable 1 we have to check a lot of modules actually loading the modules will take a lot of CPU time and memory; 2 some of the modules conflict with one another and cannot all be loaded; 3 the module is OS specific and might not load under another OS; 4 we simply do not want to execute the module, for security or other reasons.
ModuleInstalledTiny provides a routine module_installed which works like Perl’s require but does not actually load the module.
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