javascript - async js with node -

-

async.js लाइब्रेरी का उपयोग करके इस फ़ंक्शन की प्रगति क्या है? 

  var async = आवश्यकता होती है ('async'); Var स्क्वायर = फंक्शन (num, doneCallback) {console.log (num * num); // कुछ भी गलत नहीं हुआ, इसलिए एक रिक्त त्रुटि के साथ कॉलबैक। वापसी किया कॉलबैक (रिक्त); }; // स्क्वायर प्रत्येक संख्या [1, 2, 3, 4] async.each ([1, 2, 3, 4], स्क्वायर, फ़ंक्शन (गलती) {// स्क्वायर में प्रत्येक नंबर पर नंबर / / तो अब हम कर चुके हैं! Console.log ("समाप्त!");});

'वर्ग' फ़ंक्शन में, क्या रिटर्न किया जाता है, हर बार एक नया नंबर पारित किए जाने पर कॉलबैक (रिक्त) चलाया जाता है, या फिर सभी नंबरों के समाप्त होने के बाद क्या चल रहा है?

< पी> मुझे लगता है कि सभी नंबरों को पारित कर दिया गया है और सांत्वना दी गई है, आईएमओ वापसी के कारण फ़ंक्शन को रोकना और रोकना होगा। क्या यह वास्तव में हो रहा है?

नहीं, doneCallback इससे पहले होता है वापसी , क्योंकि doneCallback के परिणाम फ़ंक्शन का रिटर्न वैल्यू है पूर्ण कॉलबैक को प्रत्येक बार एक बार कहा जाएगा कि वर्ग लागू किया जाता है।


Comments

Post a Comment

Popular posts from this blog

import - Python ImportError: No module named wmi -

-
I followed the instructions for downloading WMI for Python When I try to run the code for C.Win32_Service (StartMode = "Auto", state = "Stopped") import wmi c = wmi.WMI (): if Raw_input ("restart% s?"% S.Caption) .upper () == "Y": s.StartService () I got the error traceback (most recent call end): file ". \", Line 1, edit: I am using Python 2.7.6 EDIT2: I am running 64-bit Windows 2008 R2, and I've downloaded WMI-1.4.9.zip (md5). I removed the content and put it in D: Python \ Tools \ Scripts I executed dragon setup.py.install I said D : \ Python \ tools \ scripts to% PATH% and when I execute the code for C.Win32_Service (StartMode = "Auto", state = "Stopped") import wmi c = Wmi.WMI (): If raw_input ("Restart% s?"% S. Caption). () == "Y": s.StartService () error me Gets traceback (most recent call final): File ". See \", line 1, & lt; Modu...
Read more

Editing Python Class in Shell and SQLAlchemy -

-
I am working on the terminal on a shell script after this tutorial SQLAlchemy tutorial. I need to type gt; & Gt; & Gt; Sqlalchemy import column, integer, string & gt; & Gt; & Gt; Class user (base): __tablename__ = 'users' id = column (integer, primary_key = true) name = column (string) absolute name = column (string) password = column (string) def __repr __ (self): return "& lt ; User (name = '% s', absolute name = '% s', password = '% s') & gt; "% (Self.name, self.fullname, self.password) After the problem I have typed the password = column (string) I hit twice and changed .... >> I then took everything back but then an error was thrown because the class already exists ... I am not completely sure how to fix it. How do I open that slip in the shell script and edit it (Add DF to DRR) The error thrown below: / user / giripeters / TFSQLLX / Lib / python2.7 / site-packages / sqlalchemy / ext / decla...
Read more

lua - HowTo create a fuel bar -

-
I would like to create a fuel bar (empty with full tank). When the user touches the screen, the fuel once Dairejh these is my code: lifeBar = display.newImage ( "fuel_bar1.png") lifeBar.anchorX = 0 lifeboats. ======================== Lifetime Y = 37 screens Group: The Insert function (called Laifbar) However, I fuel Kansmoshn (equivalent to "pressed" variable to reduce the fuel tank "true") Have used. When pressed == is true, it means that the user is touching the screen: processed (fuel) processed () if life & gt; 0 and pressed == true remains = life - life 1 Life = life =. Wide-1 remains Value.text = string.format ("% d", life) End of this This function is active as the entrance event: runtime: addEventListener ( "Antrfrem" fuel Snsadna) it is very well, but my question is: pressed variable each time 5 seconds (once = = True) How is it possible to reduce the vitality width? I tried to add it to my touch even...
Read more