Python2012-04-07
call by reference in python
Remember that arguments are passed by assignment in Python. Since assignment just creates references to objects, there's no alias between an argument name in the caller and callee,
Read tutorialAdvertisement
THE TUTORIAL LIBRARY
All tutorials
All topicsJava 386PHP 145VB.net 120C++ 111C 110Interview 108JSP 87Javascript 81Linux 61Ruby 51python 50J2ME 47Struts 47macos 38Asp.net 36Office365 35Trends 33React-Native 33JDBC 31Android 31Certification 29Hibernate 26data-science 20JSF 19Csharp 18MySQL 17Error 14Cocoa 14Perl 13Java Beans 12EJB 12Cloud 11WebServices 10Ajax 7node.js 7HTML5 7iPhone 6Photoshop 5Reviews 5xml 5Git 4Apache 4SAP 3AI 2NoSQL 1ELKStack 1Azure 1
Python2012-04-07
UnboundLocalError in python
It can be a surprise to get the UnboundLocalError in previously working code when it is modified by adding an assignment statement somewhere in the body of a function.
Read tutorialPython2012-04-07
How to force rereading of a changed module in python
For reasons of efficiency as well as consistency, Python only reads the module file on the first time a module is imported. If it didn't, in a program consisting of many modules wh
Read tutorialPython2012-04-07
How to find the current module name in python
module can find out its own module name by looking at the predefined global variable __name__. If this has the value '__main__', the program is running as a script. Many modules th
Read tutorialPython2012-04-07
How to compile python script and create .pyc file?
When a module is imported for the first time (or when the source is more recent than the current compiled file) a .pyc file containing the compiled code should be created in the sa
Read tutorialPython2012-04-07
What is the need for Python language?
I had extensive experience with implementing an interpreted language in the ABC group at CWI, and from working with this group I had learned a lot about language design. This is th
Read tutorialAdvertisement
xml2012-04-05
XML vs HTML
Some new programmers tend to think that XML is a replacement for HTML. It is NOT. XML and HTML were designed with different goals in mind. XML was designed to transport and store d
Read tutorialPHP2012-04-05
Count occurrences of a character in a String in PHP
Here is another simple example for - for loops. Thsi PHP code shows how to search for a particular character in a String and count the number of occurrences of that character in th
Read tutorialPHP2012-04-05
HTML table output using Nested for loops in PHP
Nest for loops are used for handling many difficult situations such as Matrix, Recursion etc..In this example, it is shown how nested for loops are useful for outputting a data arr
Read tutorialPHP2012-04-05
Handling file locks in PHP
'while' can do wonders if you need something to queue writing to a file while something else has access to it. This method is not recommended for use with programs that will be nee
Read tutorialJava2012-04-04
Save/Write/Read image file from/to a database using Java program
Assuming you have a table with a blob field and you want to save a file and store it in the database table or you want to read from a blob object stored in a database, you can use
Read tutorialOffice3652012-04-04
Setting up Office 365 in Android phones and tablets
In a recent Office 365 migration from On-premise exchange to Office 365, everything was fine except for the Android Activesync setup. In fact, we were trying all sorts of different
Read tutorialThe future is yours to build.
One example today. A better developer tomorrow.