Returns an array of the string names of FileUtils methods that accept one or more keyword arguments:
FileUtils.commands.sort.take(3) # => ["cd", "chdir", "chmod"]
Returns the cosine of x
in radians.
Domain: (-INFINITY, INFINITY)
.
Range: [-1.0, 1.0]
.
Examples:
cos(-PI) # => -1.0 cos(-PI/2) # => 6.123031769111886e-17 # 0.0000000000000001 cos(0.0) # => 1.0 cos(PI/2) # => 6.123031769111886e-17 # 0.0000000000000001 cos(PI) # => -1.0
Returns the arc cosine of x
.
Domain: [-1, 1]
.
Range: [0, PI]
.
Examples:
acos(-1.0) # => 3.141592653589793 # PI acos(0.0) # => 1.5707963267948966 # PI/2 acos(1.0) # => 0.0
Returns the hyperbolic cosine of x
in radians.
Domain: [-INFINITY, INFINITY]
.
Range: [1, INFINITY]
.
Examples:
cosh(-INFINITY) # => Infinity cosh(0.0) # => 1.0 cosh(INFINITY) # => Infinity
Returns the inverse hyperbolic cosine of x
.
Domain: [1, INFINITY]
.
Range: [0, INFINITY]
.
Examples:
acosh(1.0) # => 0.0 acosh(INFINITY) # => Infinity
Returns a list of signal names mapped to the corresponding underlying signal numbers.
Signal.list #=> {"EXIT"=>0, "HUP"=>1, "INT"=>2, "QUIT"=>3, "ILL"=>4, "TRAP"=>5, "IOT"=>6, "ABRT"=>6, "FPE"=>8, "KILL"=>9, "BUS"=>7, "SEGV"=>11, "SYS"=>31, "PIPE"=>13, "ALRM"=>14, "TERM"=>15, "URG"=>23, "STOP"=>19, "TSTP"=>20, "CONT"=>18, "CHLD"=>17, "CLD"=>17, "TTIN"=>21, "TTOU"=>22, "IO"=>29, "XCPU"=>24, "XFSZ"=>25, "VTALRM"=>26, "PROF"=>27, "WINCH"=>28, "USR1"=>10, "USR2"=>12, "PWR"=>30, "POLL"=>29}
Dispatch enter and leave events for RequiredKeywordParameterNode
nodes and continue walking the tree.
Inspect a RequiredKeywordParameterNode
node.
Copy a RequiredKeywordParameterNode
node