The __str__ method is what gets called happens when you print it, and the __repr__ method is what happens when you use the repr() function (or when you look at it with the interactive prompt). If no __str__ method is given, Python will print the result of __repr__ instead. If you define __str__ but not __repr__, Python will use what you see above as the __repr__, but still use __str__ for … Read more
By printing multiple values separated by a comma: The print statement will output each expression separated by spaces, followed by a newline. If you need more complex formatting, use the ”.format() method: or by using the older and semi-deprecated % string formatting operator.
In C++11, you don’t need to spell out map<string, pair<string,string> >::const_iterator. You can use auto Note the use of cbegin() and cend() functions. Easier still, you can use the range-based for loop:
I was wondering what the best way of printing a 2D array was. This is some code that I have and I was just wondering if this is good practice or not. Also correct me in any other mistakes I made in this code if you find any. Thanks!
I have an ArrayList that contains Address objects. How do I print the values of this ArrayList, meaning I am printing out the contents of the Array, in this case numbers. I can only get it to print out the actual memory address of the array with this code:
Firefox On Firefox you can use an extension called FirePHP which enables the logging and dumping of information from your PHP applications to the console. This is an addon to the awesome web development extension Firebug. http://www.studytrails.com/blog/using-firephp-in-firefox-to-debug-php/ Chrome However if you are using Chrome there is a PHP debugging tool called Chrome Logger or webug (webug has problems with the order of … Read more
In Python 3, print can take an optional flush argument: In Python 2 you’ll have to do after calling print. By default, print prints to sys.stdout (see the documentation for more about file objects).
I was wondering what the best way of printing a 2D array was. This is some code that I have and I was just wondering if this is good practice or not. Also correct me in any other mistakes I made in this code if you find any. Thanks!
You can use the print statement to do this without importing sys. The comma on the end of the print line prevents print from issuing a new line (you should note that there will be an extra space at the end of the output). The Python 3 SolutionSince the above does not work in Python 3, you can do this instead (again, … Read more