Check if gem name version version is installed.
True if the requested gem has already been installed.
A string explanation of the conflict.
Does this dependency request match spec?
NOTE: match? only matches prerelease versions when dependency is a prerelease dependency.
Installing a git gem only involves building the extensions and generating the executables.
This is a null install as this specification is already installed. options are ignored.
This is a null install as a locked specification is considered installed. options are ignored.
Installs this specification using the Gem::Installer options. The install method yields a Gem::Installer instance, which indicates the gem will be installed, or nil, which indicates the gem is already installed.
After installation spec is updated to point to the just-installed specification.
This is a null install as this gem was unpacked into a directory. options are ignored.
Returns the line number of this frame.
For example, using caller_locations.rb from Thread::Backtrace::Location
loc = c(0..1).first loc.lineno #=> 2
Returns the same as calling inspect on the string representation of to_str
Returns true if the element contains inline content that has a text or HTML media type, or no media type at all.
Returns true if the element contains inline content that has a HTML media type.
Returns true if the element contains inline content that has a XHTML media type.
Returns true if the element contains inline content that has a MIME media type.