java - Groovy could not find matching constructor -

-

could explain me why simple piece of code not compile?

node.groovy

class node{      integer key     string value      node leftnode     node rightnode      node(){}      node(integer k, string v){         this.key = k         this.value = v     }  }

binarytree.groovy

class binarytree{      node root;      def addnode(k, v){          def newnode = new node(k,v)          if(!root){             root = newnode         }else{             node currentnode = root             node parent              while(true){                 parent = currentnode                 if(k < currentnode.key) {                     currentnode = currentnode.leftnode                     if(!currentnode){                         parent.leftnode = newnode                         return                     }                 } else {                     currentnode = currentnode.rightnode                     if(!currentnode){                         parent.rightnode = newnode                         return                     }                 }             }         }     }      def inordertraversal(def node, def silent){         if(node){             inordertraversal(node.leftnode)             !silent ?: println("node ${node.dump()}")             inordertraversal(node.rightnode)         }     }   }

main.groovy

//test binarytree project binarytree = new binarytree();  binarytree.addnode(45, "v1") binarytree.addnode(60, "v4") binarytree.addnode(12, "v3") binarytree.addnode(32, "v9") binarytree.addnode(415, "v7")  binarytree.inordertraversal(binarytree.root, false)

3 simple files. when press play in intellij, or when try run this: groovy -cp ./src src/main.groovy

caught: groovy.lang.groovyruntimeexception: not find matching constructor for: groovy.util.node(java.lang.integer, java.lang.string) groovy.lang.groovyruntimeexception: not find matching constructor for: groovy.util.node(java.lang.integer, java.lang.string)     @ binarytree.addnode(binarytree.groovy:7)     @ binarytree$addnode.call(unknown source)     @ main.run(main.groovy:4)     @ com.intellij.rt.execution.application.appmain.main(appmain.java:140)

the constructor in node looks fine me.

i using java 8 , groovy 2.4

thanks


Comments

Post a Comment

Popular posts from this blog

php - Zend Framework / Skeleton-Application / Composer install issue -

-
i trying create zend framework application using skeleton in netbeans. when run composer install, following error message: "c:\php\php.exe" "c:\composer\composer.phar" "--ansi" "--no-interaction" "update" "--dev" using deprecated option "dev". dev packages installed default now. loading composer repositories package information updating dependencies (including require-dev) requirements not resolved installable set of packages. problem 1 - package requires php >=5.5 php version (5.4.42) not satisfy requirement. problem 2 - installation request zendframework/zendframework 2.5.1 -> satisfiable zendframework/zendframework[2.5.1]. - zendframework/zendframework 2.5.1 requires php >=5.5 -> php version (5.4.42) not satisfy requirement. done. apparently, zend framework only needs php 5.3+ contradicts above. need use php 5.4. my composer.json following: { "name": "
Read more

c# - Better 64-bit byte array hash -

-
i need hash algorithm produces 64-bit hash code ( long ) fewer collisions string.gethashcode() , fast (no expensive calls cryptographic functions). here's implementation of fnv still shows 3% of collisions after testing 2 million random strings. need number way lower. void main() { const string chars = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz!#@$%^&*()_+}{\":?><,./;'[]0123456789\\"; const int n = 2000000; var random = new random(); var hashes = new hashset<long>(); int collisions = 0; for(int = 0; < n; i++) { var len = random.next(chars.length); var str = new char[len]; (int j = 0; j < len; j++) { str[j] = chars[random.next(chars.length)]; } var s = new string(str); if(!hashes.add(get64bithash( s ))) collisions++; } console.writeline("collision percentage after " + n + " random strings: " + ((doubl
Read more

python - PyCharm Type error Message -

-
i'm newbie trying out ml/dbn in python (3.4) under pycharm (comm.ed 4.5). following definition def make_thetas(xmin,xmax,n): xs = np.linespace(xmin,xmax,n) widths = (xs[1:] - xs[:-1])/2.0 thetas = xs[:-1] + widths return thetas throws error "class 'tuple' not define ' sub ', '-' operator cannot used on instance" on - operator on third line (widths = ....) ideas on how code running under pycharm - works alright in interactive python window. thx. to all, after g'g lot have found workaround seems work within pycharm. workaround because (even python newbie) expected python not need explicit typecasting, not when using datatypes imported lib such numpy. def make_thetas(xmin,xmax,n): xs = np.array(np.linspace(xmin,xmax,n)) widths = (xs[1:] - xs[:-1])/2.0 thetas = xs[:-1]+ widths return thetas using docstrings type-hinting such below did not work def make_thetas(xmin,xmax,n): "&q
Read more