Re-composes a prime factorization and returns the product.
pd
Array of pairs of integers. The each internal pair consists of a prime number – a prime factor – and a natural number – an exponent.
For [[p_1, e_1], [p_2, e_2], ...., [p_n, e_n]], it returns:
p_1**e_1 * p_2**e_2 * .... * p_n**e_n. Prime.int_from_prime_division([[2,2], [3,1]]) #=> 12
The index to insert activated gem paths into the $LOAD_PATH. The activated gem’s paths are inserted before site lib directory by default.
If stat is readable by others, returns an integer representing the file permission bits of stat. Returns nil otherwise. The meaning of the bits is platform dependent; on Unix systems, see stat(2).
m = File.stat("/etc/passwd").world_readable? #=> 420 sprintf("%o", m) #=> "644"
Returns true if stat is writable by the real user id of this process.
File.stat("testfile").writable_real? #=> true
Same as executable?, but tests using the real owner of the process.
Returns a DRb::DRbSSLSocket instance as a server-side connection, with the SSL connected. This is called from DRb::start_service or while connecting to a remote object:
DRb.start_service 'drbssl://localhost:0', front, config
uri is the URI we are connected to, 'drbssl://localhost:0' above, config is our configuration. Either a Hash or DRb::DRbSSLSocket::SSLConfig
Returns the eigenvector matrix V
Setter for the read_timeout attribute.
When true, connections are in passive mode per default. Default: true.