Try to activate a gem containing path. Returns true if activation succeeded or wasn’t needed because it was already activated. Returns false if it can’t find the path in a gem.
Find the full path to the executable for gem name. If the exec_name is not given, an exception will be raised, otherwise the specified executable’s path is returned. requirements allows you to specify specific gem versions.
Reset the dir and path values. The next time dir or path is requested, the values will be calculated from scratch. This is mainly used by the unit tests to provide test isolation.
The version of the Marshal format for your Ruby.
Glob pattern for require-able path suffixes.
Use the home and paths values for Gem.dir and Gem.path. Used mainly by the unit tests to provide environment isolation.
Is this a windows platform?
Is this a java platform?
Is this platform Solaris?
The path to standard location of the user’s state file.
The path to standard location of the user’s cache directory.
The path to standard location of the user’s data directory.
The path to standard location of the user’s state directory.
Default gem load path
Default options for gem commands for Ruby implementers.
The options here should be structured as an array of string “gem” command names as keys and a string of the default options as values.
Example:
def self.platform_defaults
{
'install' => '--no-rdoc --no-ri --env-shebang',
'update' => '--no-rdoc --no-ri --env-shebang'
}
end
Returns a sharable hash map of error types and spell checker objects.
Takes a hash as its argument. The key is a symbol or an array of symbols. These symbols correspond to method names, instance variable names, or constant names (see def_delegator). The value is the accessor to which the methods will be delegated.
Takes a hash as its argument. The key is a symbol or an array of symbols. These symbols correspond to method names. The value is the accessor to which the methods will be delegated.
Creats temporary source file from COMMON_HEADERS and src. Yields the created source string and uses the returned string as the source code, if the block is given.
Returns whether or not macro is defined either in the common header files or within any headers you provide.
Any options you pass to opt are passed along to the compiler.
Returns the size of the given type. You may optionally specify additional headers to search in for the type.
If found, a macro is passed as a preprocessor constant to the compiler using the type name, in uppercase, prepended with SIZEOF_, followed by the type name, followed by =X where “X” is the actual size.
For example, if check_sizeof('mystruct') returned 12, then the SIZEOF_MYSTRUCT=12 preprocessor macro would be passed to the compiler.