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How to implement classic sorting algorithms in modern C++?
The std::sort algorithm (and its cousins std::partial_sort and std::nth_element ) from the C++ Standard Library is in most implementations a complicated and hybrid amalgamation of more elementary sorting algorithms , such as selection sort, insertion sort, quick sort, merge sort, or heap sort....
How to prevent robots from automatically filling up a form?
...attacks) way of solving anti-spam is tracking the time between form-submit and page-load.
Bots request a page, parse the page and submit the form. This is fast.
Humans type in a URL, load the page, wait before the page is fully loaded, scroll down, read content, decide wether to comment/fill in th...
Accessing localhost:port from Android emulator
...ith the IP address "10.0.2.2".
This has been designed in this way by the Android team. So your webserver can perfectly run at localhost and from your Android app you can access it via "http://10.0.2.2:<hostport>".
If your emulator must access the internet through a proxy server, you can con...
Entity Framework and Connection Pooling
...ecently started to use the Entity Framework 4.0 in my .NET 4.0 application and am curious about a few things relating to pooling.
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Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
...g of a list of lists, representing a two-dimensional array with row labels and column names as shown below:
9 Answers
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Accessing items in an collections.OrderedDict by index
...ems method returns an interable dictionary view object rather than a list, and don't support slicing or indexing. So you'd have to turn it into a list first. docs.python.org/3.3/library/stdtypes.html#dict-views
– Peter DeGlopper
Jun 5 '13 at 21:51
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MySQL, better to insert NULL or empty string?
...a lot of different fields. Some of the fields are optional while some are mandatory. In my DB I have a table which holds all these values, is it better practice to insert a NULL value or an empty string into the DB columns where the user didn't put any data?
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How can I get last characters of a string
...th - 1); // => "1"
This gets the characters starting at id.length - 5 and, since the second argument for .substr() is omitted, continues to the end of the string.
You can also use the .slice() method as others have pointed out below.
If you're simply looking to find the characters after the u...
What is the difference between Elastic Beanstalk and CloudFormation for a .NET project?
I have developed a .NET MVC application and have started playing around with AWS and deploying it via the Visual Studio Toolkit. I have successfully deployed the application using the Elastic Beanstalk option in the toolkit.
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Logical Operators, || or OR?
... no "better" but the more common one is ||. They have different precedence and || would work like one would expect normally.
See also: Logical operators (the following example is taken from there):
// The result of the expression (false || true) is assigned to $e
// Acts like: ($e = (false || true...