Deduce Ruby’s –program-prefix and –program-suffix from its install name
Should be implemented by a extended class.
tsort_each_child is used to iterate for child nodes of node.
Returns a new lazy enumerator with the concatenated results of running block once for every element in the lazy enumerator.
["foo", "bar"].lazy.flat_map {|i| i.each_char.lazy}.force #=> ["f", "o", "o", "b", "a", "r"]
A value x returned by block is decomposed if either of the following conditions is true:
x responds to both each and force, which means that x is a lazy enumerator.
x is an array or responds to to_ary.
Otherwise, x is contained as-is in the return value.
[{a:1}, {b:2}].lazy.flat_map {|i| i}.force
#=> [{:a=>1}, {:b=>2}]
See Zlib::GzipReader documentation for a description.
Iterate all direct child instruction sequences. Iteration order is implementation/version defined so that people should not rely on the order.
Main name of the switch.
Defaults to use Ruby’s program prefix and suffix.
This is ported over from the yaml_tree in 1.9.3
File Fetcher. Dispatched by fetch_path. Use it instead.
HTTP Fetcher. Dispatched by fetch_path. Use it instead.
Returns true when it is possible and safe to update the cache directory.