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Articles by Nitya Raut
Page 13 of 16
urllib.parse — Parse URLs into components in Python
This module provides a standard interface to break Uniform Resource Locator (URL) strings in components or to combine the components back into a URL string. It also has functions to convert a "relative URL" to an absolute URL given a "base URL."This module supports the following URL schemes -fileftpgopherhdlhttphttpsimapmailtommsnewsnntpprosperorsyncrtsprtspusftpshttpsipsipssnewssvnsvn+sshtelnetwaiswswssurlparse()This function parses a URL into six components, returning a 6-tuple. This corresponds to the general structure of a URL. Each tuple item is a string. The components are not broken up in smaller parts (for example, the network location is a single string), and % escapes are not expanded. The return ...
Read Moreurllib.robotparser - Parser for robots.txt in Python
Web site owners use the /robots.txt file to give instructions about their site to web robots; this is called The Robots Exclusion Protocol. This file is a simple text-based access control system for computer programs that automatically access web resources. Such programs are called spiders, crawlers, etc. The file specifies the user agent identifier followed by a list of URLs the agent may not access.For example#robots.txt Sitemap: https://example.com/sitemap.xml User-agent: * Disallow: /admin/ Disallow: /downloads/ Disallow: /media/ Disallow: /static/This file is usually put in the top-level directory of your web server.Python's urllib.robotparser module provides RobotFileParser class. It answers questions about whether ...
Read MoreSum of array using pointer arithmetic in C
In this program, we need to find sum of array elements using pointer arithmetic.Here we use * which denotes the value stored at the memory address and this address will remain stored in the variable. Thus “int *ptr” means, ptr is a variable which contains an address and content of the address is an integer quantity.*p means it is a pointer variable. Using this and sum() we will find out sum of the elements of array.Example Code#include void s(int* a, int len) { int i, s_of_arr = 0; for (i = 0; i
Read Morelvalue and rvalue in C
An lvalue (locator value) represents an object that occupies some identifiable location in memory (i.e. has an address).rvalues are defined by exclusion. Every expression is either an lvalue or an rvalue, so, an rvalue is an expression that does not represent an object occupying some identifiable location in memory.For example, An assignment expects an lvalue as its left operand, so the following is valid:int i = 10; But this is not: int i; 10 = i;This is because i has an address in memory and is a lvalue. While 10 doesn't have an identifiable memory location and hence is an ...
Read MoreHow to use removeFirst() in android LinkedBlockingDeque?
Before getting into an example, we should know what LinkedBlockingDeque is. It is implemented by Collection interface and the AbstractQueue class. It provides optional boundaries based on linked nodes. It going to pass memory size to a constructor and helps to provide memory wastage in android.This example demonstrates about How to use removeFirst() in android LinkedBlockingDequeStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken a ...
Read MoreHow to update continues ui from Intent Service in Android?
Before getting into example, we should know what is Intent service in android. Intent Service is going to do back ground operation asynchronously. When user call startService() from activity , it doesn’t create instance for each request and it going to stop service after done some action in service class or else we need to stop service manually by using stopSelf().This example demonstrate about How to update continues ui from Intent Service.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add ...
Read MoreHow to enable webview java script in android?
This example demonstrate about How to enable webview java script in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken web view to show google.com.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.webkit.WebView; import android.widget.EditText; public class MainActivity extends AppCompatActivity { @RequiresApi(api = Build.VERSION_CODES.P) @Override ...
Read MoreHow to use removeLast() in android ConcurrentLinkedDeque?
Before getting into the example, we should know what ConcurrentLinkedDeque is, it is unbounded deque based on linked nodes. Multiple threads can access deque elements with safety.This example demonstrates about How to use removeLast() in android ConcurrentLinkedDequeStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken a text view to show ConcurrentLinkedDeque elements.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Build; import android.os.Bundle; ...
Read MoreHow to use unmodifiableSet in Android?
This example demonstrate about How to use unmodifiableSet in Android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken name and record number as Edit text, when user click on save button it will store the data into arraylist. Click on refresh button to get the changes of listview.Step 3 ...
Read MoreHow to get current user is system user or not in android?
This example demonstrate about How to get current user is system user or not in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken text view to show user status.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.os.Build; import android.os.Bundle; import android.os.UserManager; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.text.format.Formatter; import android.widget.TextView; public class MainActivity extends AppCompatActivity { ...
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