oop - Function as an argument to a function in Javascript -

-

इस सवाल का पहले से ही एक उत्तर है: < / P>

  • 1 9 उत्तर

मैं लागू करने की कोशिश कर रहा हूँ एक फ़ंक्शन जो एक तर्क के रूप में दूसरे फ़ंक्शन को लेता है, और उस फ़ंक्शन का एक नया संस्करण देता है जिसे केवल एक बार कहा जा सकता है।

परिणामी फ़ंक्शन को आने वाले कॉल का कोई प्रभाव नहीं होना चाहिए (और अनिर्धारित नहीं होना चाहिए)। / P>

उदाहरण के लिए: 

  लॉगऑन = एक बार (console.log) लॉगऑन ("foo") // - & gt; "फू" लॉगऑन ("बार") // - & gt; कोई प्रभाव नहीं  
 
 आप ओब्जेक्ट फ़ंक्शन पर फ्लैग का उपयोग कर सकते हैं, आप तर्क के रूप में गुजर रहे हैं < / P> 
 
 
 
  फ़ंक्शन एक बार (func) {रिटर्न फ़ंक्शन () {if (! Func.performed) {func.apply (यह, तर्क); Func.performed = true; }}} Var लॉगऑन = एक बार (console.log); लॉगऑन ("टेस्ट 1"); लॉगऑन ("टेस्ट 2");

Comments

Post a Comment

Popular posts from this blog

java - Can't add JTree to JPanel of a JInternalFrame -

-
Image
There are two panels in my JInternalframe. I want to add TopPanel to Jtree to nominate another. But I can not add Jaitari to the top of the panel. Please help me in this piece of code: DefaultMutableTreeNode root = new DefaultMutableTreeNode ("deck"); DefaultMutableTreeNode Item Clubs = New DefaultMutableTreeNode ("Club"); AddAllCard (itemClubs); Root.add (itemClubs); DefaultMutableTreeNode item = New DefaultMutableTreeNode ("Diamonds"); AddAllCard (itemDiamonds); Root.add (itemDiamonds); DefaultMutableTreeNode Itemspads = New DefaultMutableTreeNode ("Spades"); AddAllCard (itemSpades); Root.add (itemSpades); DefaultMutableTreeNode item increases = new DefaultMutableTreeNode ("heart"); AddAllCard (itemHearts); Root.add (itemHearts); Default Trimodel Tree Model = New DefaultTreeModel (Route); Tree = new jetty (tree modal); ScrollPane = new JScrollPane (tree); // scrollPane.setViewportView (tree); . ScrollPane.getViewport () add (tr...
Read more

python - Calculate STD manually using Groupby Pandas DataFrame -

-
Image
I was trying to write a solution, which is a different and a manual for calculating a mean and STD The way. I have created a = ["Apple", "Banana", "Cherry", "Apple"] B = [3,4,7,3] C = [5,4,1,4] D = [7,8,3,7] Pd DF = PD to import pandals DataFrame (index = class (4), column = list ("ABCD")) DF ["A"] = A DF ["B"] = BDF ["C"] = C DF ["D"] = D Again, I made a list of A duplication. Then I went through the group all the time of the objects and calculated the solution. import as np l = list (set (df.A)) df.groupby ('A', As_index = False) listMean = [0] * len (df.C) ListSTD = [0] * L in the LAN (df.C) X: s = np.mean (df [df ['A'] == x] for C =.) = Z = [index for index, enumerate In the object (df ['a']. Value] x == item i for z: listMean [i] = s in: s = np.std (df [df ['a'] == X] .cvalues) z = index for index, enumerate item (df ['a']. Value) if x ==...
Read more

java - @PluginTarget(Node.class) not registering as neo4j plugin -

-
Simple class below will not show as a plugin package com.danmacias neoneoteplugin ; Import java.util.ArrayList; Import java.util.list; Import org.neo4j.graphdb. *; Import org.neo4j.server.plugins *; Import org.neo4j.graphalgo *; // import org.neo4j.tooling.GlobalGraphOperations; @ Description (expansion of Neo4j server to achieve all nodes or relationships) Public class GetPaths expanded the server plugin {@ name ("breadth_first_paths") @ Description ("first wide travel traversal of specific node"). @plugin target (node ​​class) public shaky & lt; Path & gt; GetPaths (@ Source Node Graphidi) {ArrayList & lt; Path & gt; Path = new arreelist & lt; & Gt; (); Return path; }} curl return {"extension": {"GetAll": {"get_all_nodes": "http: // localhost: 7474 / db / ext / GetAll / graphdb / get_all_nodes "} ...}, But when I Node.class both conditions GraphDatabaseService I change with Class ,...
Read more