buzz_syntax_cheatsheet

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision		 Previous revision
buzz_syntax_cheatsheet [2016/04/09 22:00] – rootbuzz_syntax_cheatsheet [2018/03/23 18:17] (current) – jayam
Line 5: Line 5:
 ^ File inclusion | <code buzz>include "otherfile.bzz" ^ File inclusion | <code buzz>include "otherfile.bzz"
  
-# NOTE: A specific file can be included only once. Any 'include' statement for a file is ignored after the first inclusion occurred. Relative paths are automatically transformed into absolute paths before including a file.</code>| +# NOTE: A specific file can be included only once. 
-^ Variables | <code># assignment (by default variables are global)+# Any 'include' statement for a file is ignored after the first inclusion 
 +# occurred. 
 +# Relative paths are automatically transformed into absolute paths before 
 +# including a file.</code>| 
 +^ Variables | <code buzz># assignment (by default variables are global)
 x = 2.55   # number x = 2.55   # number
 x = "ciao" # string x = "ciao" # string
Line 18: Line 22:
 # printing on the ARGoS logger # printing on the ARGoS logger
 log("INFO: x = " , x)</code> | log("INFO: x = " , x)</code> |
-^ Conditionals | <code># simple if/then+^ Conditionals | <code buzz># simple if/then
 if (x > 3) { if (x > 3) {
    log("x is too big")    log("x is too big")
Line 50: Line 54:
 if (not (x < 3)) if (not (x < 3))
    log("x is <= 3")</code> |    log("x is <= 3")</code> |
-^ Loops |<code># 'while' loop to print 1 2 3 4 5+^ Loops |<code buzz># 'while' loop to print 1 2 3 4 5
 x = 0 x = 0
 while (x < 5) { while (x < 5) {
Line 56: Line 60:
    log(x)    log(x)
 }</code> | }</code> |
-^ Tables |<code># creating an empty table+^ Tables |<code buzz># creating an empty table
 t = {} t = {}
  
Line 96: Line 100:
 # prints the number of elements in a # prints the number of elements in a
 log(size(a))</code> | log(size(a))</code> |
-^ Functions |<code># defining a function+^ Functions |<code buzz># defining a function
 function my_fun(p) { function my_fun(p) {
    log("Called my_fun(", p, ")")    log("Called my_fun(", p, ")")
Line 107: Line 111:
  
 # creating a lambda # creating a lambda
-f = function(a, b) {+lambda = function(a, b) {
    return a + b    return a + b
-}</code> | +} 
-^ Math |<code># all the math functions are part of the 'math' table+lambda(1,2)</code> | 
 +^ Math |<code buzz># all the math functions are part of the 'math' table
  
 # setting a 2D vector from length and angle # setting a 2D vector from length and angle
Line 127: Line 132:
    v1.y = v1.y + v2.y    v1.y = v1.y + v2.y
 } }
-v1 = { x=1, y=2 } +v1 = { .x=1, .y=2 } 
-v2 = { x=3, y=1 }+v2 = { .x=3, .y=1 }
 vec2_sum(v1, v2) vec2_sum(v1, v2)
  
 # Getting the angle of a 2D vector # Getting the angle of a 2D vector
 function vec2_angle(v) { function vec2_angle(v) {
-   return math.atan2(v.y, v.x)+   return math.atan(v.y, v.x)
 }</code> | }</code> |
-^ Swarm management |<code># creation of a swarm with identifier 1+^ Swarm management |<code buzz># creation of a swarm with identifier 1
 s = swarm.create(1) s = swarm.create(1)
  
Line 172: Line 177:
 # Create a new swarm n as the negation of swarm s # Create a new swarm n as the negation of swarm s
 n = s.others(103)</code> | n = s.others(103)</code> |
-^ Neighbor management | <code># Iteration (rid is the neighbor's id)+^ Neighbor management | <code buzz># Iteration (rid is the neighbor's id)
 neighbors.foreach( neighbors.foreach(
   function(rid, data) {   function(rid, data) {
     log("robot ", rid, ": ",     log("robot ", rid, ": ",
-        "distance  = ", data.distance, ", " +        "distance  = ", data.distance, ", ", 
-        "azimuth   = ", data.azimuth, ", "+        "azimuth   = ", data.azimuth, ", ",
         "elevation = ", data.elevation) })         "elevation = ", data.elevation) })
  
Line 189: Line 194:
           math.sin(data.azimuth)           math.sin(data.azimuth)
     c.z = data.distance * math.sin(data.elevation)     c.z = data.distance * math.sin(data.elevation)
-    return c })+    return c 
 +  })
  
 # Reduction (accum is a table) # Reduction (accum is a table)
Line 198: Line 204:
     accum.z = accum.z + data.z     accum.z = accum.z + data.z
     return accum     return accum
-  }, {x=0, y=0, z=0})+  }, {.x=0, .y=0, .z=0})
  
 # Filtering # Filtering
Line 217: Line 223:
 # Broadcasting a (key,value) pair # Broadcasting a (key,value) pair
 neighbors.broadcast("key", value)</code> | neighbors.broadcast("key", value)</code> |
-^ Virtual stigmergy | <code># Create a new virtual stigmergy+^ Virtual stigmergy | <code buzz># Create a new virtual stigmergy
 # A unique id (1 here) must be passed # A unique id (1 here) must be passed
 v = stigmergy.create(1) v = stigmergy.create(1)
  • buzz_syntax_cheatsheet.1460239230.txt.gz
  • Last modified: 2016/04/09 22:00
  • by root