Generate a string that randomly draws from a source array of characters.
The argument source specifies the array of characters from which to generate the string. The argument n specifies the length, in characters, of the string to be generated.
The result may contain whatever characters are in the source array.
require 'random/formatter' prng.choose([*'l'..'r'], 16) #=> "lmrqpoonmmlqlron" prng.choose([*'0'..'9'], 5) #=> "27309"
Generate a random alphanumeric string.
The argument n specifies the length, in characters, of the alphanumeric string to be generated. The argument chars specifies the character list which the result is consist of.
If n is not specified or is nil, 16 is assumed. It may be larger in the future.
The result may contain A-Z, a-z and 0-9, unless chars is specified.
require 'random/formatter' Random.alphanumeric #=> "2BuBuLf3WfSKyQbR" # or prng = Random.new prng.alphanumeric(10) #=> "i6K93NdqiH" Random.alphanumeric(4, chars: [*"0".."9"]) #=> "2952" # or prng = Random.new prng.alphanumeric(10, chars: [*"!".."/"]) #=> ",.,++%/''."
Resets the trust directory for verifying gems.
Displays an alert statement. Asks a question if given.
This calls IO.popen and reads the result
Raises a TypeError to prevent cloning.
Set the user ID of the current process to user. Not available on all platforms.
Set the group ID of the current process to group. Not available on all platforms.
Set the real user ID of the calling process to user. Not available on all platforms.
Set the real group ID of the calling process to group. Not available on all platforms.
Set the effective user ID of the calling process to user. Not available on all platforms.
Set the effective group ID of the calling process to group. Not available on all platforms.
Sets the (user) real and/or effective user IDs of the current process to rid and eid, respectively. A value of -1 for either means to leave that ID unchanged. Not available on all platforms.
Sets the (group) real and/or effective group IDs of the current process to rid and eid, respectively. A value of -1 for either means to leave that ID unchanged. Not available on all platforms.
Sets the (user) real, effective, and saved user IDs of the current process to rid, eid, and sid respectively. A value of -1 for any value means to leave that ID unchanged. Not available on all platforms.
Sets the (group) real, effective, and saved user IDs of the current process to rid, eid, and sid respectively. A value of -1 for any value means to leave that ID unchanged. Not available on all platforms.
Returns true if the process was created as a result of an execve(2) system call which had either of the setuid or setgid bits set (and extra privileges were given as a result) or if it has changed any of its real, effective or saved user or group IDs since it began execution.
The start offset from the start of the file in code units using the given cache to fetch or calculate the value.
Return the best specification that contains the file matching path, among those already activated.
Adds this spec’s require paths to LOAD_PATH, in the proper location.
Return the best specification in the record that contains the file matching path, among those already activated.
Foo += bar ^^^^^^^^^^^