Results for: "to_proc"

Get the front object of the current server.

This raises a DRbServerNotFound error if there is no current server. See current_server.

Skips the current file or directory, restarting the loop with the next entry. If the current file is a directory, that directory will not be recursively entered. Meaningful only within the block associated with Find::find.

See the Find module documentation for an example.

Skips the current file or directory, restarting the loop with the next entry. If the current file is a directory, that directory will not be recursively entered. Meaningful only within the block associated with Find::find.

See the Find module documentation for an example.

The directory prefix this RubyGems was installed at. If your prefix is in a standard location (ie, rubygems is installed where you’d expect it to be), then prefix returns nil.

Iterates over strongly connected component in the subgraph reachable from node.

Return value is unspecified.

each_strongly_connected_component_from doesn’t call tsort_each_node.

class G
  include TSort
  def initialize(g)
    @g = g
  end
  def tsort_each_child(n, &b) @g[n].each(&b) end
  def tsort_each_node(&b) @g.each_key(&b) end
end

graph = G.new({1=>[2, 3], 2=>[4], 3=>[2, 4], 4=>[]})
graph.each_strongly_connected_component_from(2) {|scc| p scc }
#=> [4]
#   [2]

graph = G.new({1=>[2], 2=>[3, 4], 3=>[2], 4=>[]})
graph.each_strongly_connected_component_from(2) {|scc| p scc }
#=> [4]
#   [2, 3]

Iterates over strongly connected components in a graph. The graph is represented by node and each_child.

node is the first node. each_child should have call method which takes a node argument and yields for each child node.

Return value is unspecified.

TSort.each_strongly_connected_component_from is a class method and it doesn’t need a class to represent a graph which includes TSort.

graph = {1=>[2], 2=>[3, 4], 3=>[2], 4=>[]}
each_child = lambda {|n, &b| graph[n].each(&b) }
TSort.each_strongly_connected_component_from(1, each_child) {|scc|
  p scc
}
#=> [4]
#   [2, 3]
#   [1]

Given a connection and a request path, performs authentication as the current user and returns the response from a GET request. The connection should be a Net::HTTP object, and it should have been constructed using the Net::HTTP.Proxy method, but anything that responds to “get” will work. If a user and domain are given, will authenticate as the given user. Returns the response received from the get method (usually Net::HTTPResponse)

Invoked by methods like Thread.join, and by Mutex, to signify that current Fiber is blocked until further notice (e.g. unblock) or until timeout has elapsed.

blocker is what we are waiting on, informational only (for debugging and logging). There are no guarantee about its value.

Expected to return boolean, specifying whether the blocking operation was successful or not.

Invoked to wake up Fiber previously blocked with block (for example, Mutex#lock calls block and Mutex#unlock calls unblock). The scheduler should use the fiber parameter to understand which fiber is unblocked.

blocker is what was awaited for, but it is informational only (for debugging and logging), and it is not guaranteed to be the same value as the blocker for block.

Like Enumerable#drop, but chains operation to be lazy-evaluated.

Allocates a C struct with the types provided.

See Fiddle::Pointer.malloc for memory management issues.

Examples

# Automatically freeing the pointer when the block is exited - recommended
Fiddle::Pointer.malloc(size, Fiddle::RUBY_FREE) do |pointer|
  ...
end

# Manually freeing but relying on the garbage collector otherwise
pointer = Fiddle::Pointer.malloc(size, Fiddle::RUBY_FREE)
...
pointer.call_free

# Relying on the garbage collector - may lead to unlimited memory allocated before freeing any, but safe
pointer = Fiddle::Pointer.malloc(size, Fiddle::RUBY_FREE)
...

# Only manually freeing
pointer = Fiddle::Pointer.malloc(size)
begin
  ...
ensure
  Fiddle.free pointer
end

# No free function and no call to free - the native memory will leak if the pointer is garbage collected
pointer = Fiddle::Pointer.malloc(size)
...

Allocate size bytes of memory and associate it with an optional freefunc.

If a block is supplied, the pointer will be yielded to the block instead of being returned, and the return value of the block will be returned. A freefunc must be supplied if a block is.

If a freefunc is supplied it will be called once, when the pointer is garbage collected or when the block is left if a block is supplied or when the user calls call_free, whichever happens first. freefunc must be an address pointing to a function or an instance of Fiddle::Function.

Wakes up all threads waiting for this lock.

Performs a Miller-Rabin probabilistic primality test for bn.

checks parameter is deprecated in version 3.0. It has no effect.

Enter error recovering mode. This method does not call on_error.

Leave error recovering mode.

Returns the broadcast address of ifaddr. nil is returned if the flags doesn’t have IFF_BROADCAST.

Logs a message at the error (syslog warning) log level, or logs the message returned from the block.

Same as IO.

Same as IO.

Returns the number of native file system blocks allocated for this file, or nil if the operating system doesn’t support this feature.

File.stat("testfile").blocks   #=> 2

Returns true if stat is a zero-length file; false otherwise.

File.stat("testfile").zero?   #=> false

Returns true if stat is a socket, false if it isn’t or if the operating system doesn’t support this feature.

File.stat("testfile").socket?   #=> false