added dup to doc

calc.go

@@ -62,8 +62,6 @@ const Help string = `
 Operators:
 basic operators: + - x * / ^  (* is an alias of x)
 
-Bitwise operators: and or xor < (left shift) > (right shift)
-
 Percent functions:
 %                    percent
 %-                   substract percent
@@ -237,15 +235,6 @@ func (c *Calc) Eval(line string) {
 			c.stack.Backup()
 			c.stack.Push(num)
 		} else {
-			// try hex
-			var i int
-			_, err := fmt.Sscanf(item, "0x%x", &i)
-			if err == nil {
-				c.stack.Backup()
-				c.stack.Push(float64(i))
-				continue
-			}
-
 			if contains(c.Constants, item) {
 				// put the constant onto the stack
 				c.stack.Backup()

calc_test.go

@@ -241,45 +241,6 @@ func TestCalc(t *testing.T) {
 			cmd:  `4 4 + undo *`,
 			exp:  16,
 		},
-
-		// bit tests
-		{
-			name: "bit and",
-			cmd:  `1 3 and`,
-			exp:  1,
-		},
-		{
-			name: "bit or",
-			cmd:  `1 3 or`,
-			exp:  3,
-		},
-		{
-			name: "bit xor",
-			cmd:  `1 3 xor`,
-			exp:  2,
-		},
-
-		// converters
-		{
-			name: "inch-to-cm",
-			cmd:  `111 inch-to-cm`,
-			exp:  281.94,
-		},
-		{
-			name: "gallons-to-liters",
-			cmd:  `111 gallons-to-liters`,
-			exp:  420.135,
-		},
-		{
-			name: "meters-to-yards",
-			cmd:  `111 meters-to-yards`,
-			exp:  1.2139107611548556,
-		},
-		{
-			name: "miles-to-kilometers",
-			cmd:  `111 miles-to-kilometers`,
-			exp:  178.599,
-		},
 	}
 
 	for _, tt := range tests {

command.go

@@ -117,15 +117,6 @@ func (c *Calc) SetCommands() {
 				}
 			},
 		),
-
-		"hex": NewCommand(
-			"show last stack item in hex form (converted to int)",
-			func(c *Calc) {
-				if c.stack.Len() > 0 {
-					fmt.Printf("0x%x\n", int(c.stack.Last()[0]))
-				}
-			},
-		),
 	}
 
 	c.StackCommands = Commands{

funcs.go

@@ -387,85 +387,6 @@ func DefineFunctions() Funcalls {
 				return NewR(math.Hypot(arg[0], arg[1]), nil)
 			},
 			2),
-
-		// converters of all kinds
-		"cm-to-inch": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(arg[0]/2.54, nil)
-			},
-			1),
-
-		"inch-to-cm": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(arg[0]*2.54, nil)
-			},
-			1),
-
-		"gallons-to-liters": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(arg[0]*3.785, nil)
-			},
-			1),
-
-		"liters-to-gallons": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(arg[0]/3.785, nil)
-			},
-			1),
-
-		"yards-to-meters": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(arg[0]*91.44, nil)
-			},
-			1),
-
-		"meters-to-yards": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(arg[0]/91.44, nil)
-			},
-			1),
-
-		"miles-to-kilometers": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(arg[0]*1.609, nil)
-			},
-			1),
-
-		"kilometers-to-miles": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(arg[0]/1.609, nil)
-			},
-			1),
-
-		"or": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(float64(int(arg[0])|int(arg[1])), nil)
-			},
-			2),
-
-		"and": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(float64(int(arg[0])&int(arg[1])), nil)
-			},
-			2),
-
-		"xor": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(float64(int(arg[0])^int(arg[1])), nil)
-			},
-			2),
-
-		"<": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(float64(int(arg[0])<<int(arg[1])), nil)
-			},
-			2),
-
-		">": NewFuncall(
-			func(arg Numbers) R {
-				return NewR(float64(int(arg[0])>>int(arg[1])), nil)
-			},
-			2),
 	}
 
 	// aliases

main.go

@@ -30,7 +30,7 @@ import (
 	lua "github.com/yuin/gopher-lua"
 )
 
-const VERSION string = "2.0.10"
+const VERSION string = "2.0.9"
 
 const Usage string = `This is rpn, a reverse polish notation calculator cli.
 

rpn.go

@@ -105,9 +105,6 @@ DESCRIPTION
     If the first parameter to rpn is a math operator or function, batch mode
     is enabled automatically, see last example.
 
-    You can enter integers, floating point numbers (positive or negative) or
-    hex numbers (prefixed with 0x).
-
   STACK MANIPULATION
     There are lots of stack manipulation commands provided. The most
     important one is undo which goes back to the stack before the last math
@@ -132,14 +129,6 @@ DESCRIPTION
         x                    multiply (alias: *)
         ^                    power
 
-    Bitwise operators:
-
-        and                  bitwise and
-        or                   bitwise or
-        xor                  bitwise xor
-        <                    left shift
-        >                    right shift
-
     Percent functions:
 
         %                    percent
@@ -161,33 +150,19 @@ DESCRIPTION
         log10 log1p log2 logb pow round roundtoeven sin sinh tan tanh trunc y0
         y1 copysign dim hypot
 
-    Conversion functions:
-
-        cm-to-inch
-        inch-to-cm
-        gallons-to-liters
-        liters-to-gallons
-        yards-to-meters
-        meters-to-yards
-        miles-to-kilometers
-        kilometers-to-miles
-
-    Configuration Commands:
+    Commands:
 
         [no]batch            toggle batch mode (nobatch turns it off)
         [no]debug            toggle debug output (nodebug turns it off)
         [no]showstack        show the last 5 items of the stack (noshowtack turns it off)
-
-    Show commands: dump display the stack contents hex show last stack item
-    in hex form (converted to int) history display calculation history vars
-    show list of variables
-
-    Stack manipulation commands: clear clear the whole stack shift remove
-    the last element of the stack reverse reverse the stack elements swap
-    exchange the last two stack elements dup duplicate last stack item undo
-    undo last operation
-
-    Other commands: help|? show this message manual show manual
+        dump                 display the stack contents
+        clear                clear the whole stack
+        shift                remove the last element of the stack
+        reverse              reverse the stack elements
+        swap                 exchange the last two stack elements
+        dup                  duplicate last stack item
+        history              display calculation history
+        help|?               show this message
         quit|exit|c-d|c-c    exit program
 
     Register variables:

rpn.pod

@@ -109,9 +109,6 @@ Example of batch mode usage:
 If the first parameter to rpn is a math operator or function, batch
 mode is enabled automatically, see last example.
 
-You can enter integers, floating  point numbers (positive or negative)
-or hex numbers (prefixed with 0x).
-
 =head2 STACK MANIPULATION
 
 There are lots of stack manipulation commands provided. The most
@@ -139,14 +136,6 @@ Basic operators:
     x                    multiply (alias: *)
     ^                    power
 
-Bitwise operators:
-
-    and                  bitwise and
-    or                   bitwise or
-    xor                  bitwise xor
-    <                    left shift
-    >                    right shift
-
 Percent functions:
 
     %                    percent
@@ -168,40 +157,19 @@ Math functions:
     log10 log1p log2 logb pow round roundtoeven sin sinh tan tanh trunc y0
     y1 copysign dim hypot
 
-Conversion functions:
-
-    cm-to-inch
-    inch-to-cm
-    gallons-to-liters
-    liters-to-gallons
-    yards-to-meters
-    meters-to-yards
-    miles-to-kilometers
-    kilometers-to-miles
-
-Configuration Commands:
+Commands:
 
     [no]batch            toggle batch mode (nobatch turns it off)
     [no]debug            toggle debug output (nodebug turns it off)
     [no]showstack        show the last 5 items of the stack (noshowtack turns it off)
-
-Show commands:
     dump                 display the stack contents
-    hex                  show last stack item in hex form (converted to int)
-    history              display calculation history
-    vars                 show list of variables
-
-Stack manipulation commands:
     clear                clear the whole stack
     shift                remove the last element of the stack
     reverse              reverse the stack elements
     swap                 exchange the last two stack elements
     dup                  duplicate last stack item
-    undo                 undo last operation
-
-Other commands:
+    history              display calculation history
     help|?               show this message
-    manual               show manual
     quit|exit|c-d|c-c    exit program
 
 

util.go

@@ -33,6 +33,15 @@ func contains(s []string, e string) bool {
 	return false
 }
 
+func exists(m map[string]interface{}, item string) bool {
+	// FIXME: try to use this for all cases
+	if _, ok := m[item]; ok {
+		return true
+	}
+
+	return false
+}
+
 func const2num(name string) float64 {
 	switch name {
 	case "Pi":