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How Do I Fetch All Old Items on an RSS Feed?
...y reason that Google Reader has more information is that it remembered it from when it came up the first time.
There is some information on something like this talked about as an extension to the ATOM protocol, but I don't know if it is actually implemented anywhere.
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What is the use of a private static variable in Java?
...f a variable is declared as public static varName; , then I can access it from anywhere as ClassName.varName . I am also aware that static members are shared by all instances of a class and are not reallocated in each instance.
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How do I strip non alphanumeric characters from a string and keep spaces?
... nil if nothing was matched. Probably not the result you'd want or expect. From the docs "Performs the substitutions of String#gsub in place, returning str, or nil if no substitutions were performed. If no block and no replacement is given, an enumerator is returned instead."
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Design Patterns: Abstract Factory vs Factory Method
...omplicated refer to next diagram for better real-life example).
Example From The .NET Framework
DbFactoriesProvider is a Simple Factory as it has no sub-types. The DbFactoryProvider is an abstract factory as it can create various related database objects such as connection and command objects.
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Best way to merge two maps and sum the values of same key?
...p is just a set of values, together with an operator that takes two values from that set, and produces another value from that set. So integers under addition are a semigroup, for example - the + operator combines two ints to make another int.
You can also define a semigroup over the set of "all m...
Check if string ends with one of the strings from a list
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Take an extension from the file and see if it is in the set of extensions:
>>> import os
>>> extensions = set(['.mp3','.avi'])
>>> file_name = 'test.mp3'
>>> extension = os.path.splitext(file_name)[1]
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How to remove RVM (Ruby Version Manager) from my system
How can I remove RVM (Ruby Version Manager) from my system?
13 Answers
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Why is std::map implemented as a red-black tree?
...Black trees are used in most collection libraries, including the offerings from Java and Microsoft .NET Framework.
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How to run a hello.js file in Node.js on windows?
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@Mitul - Right, this is the detail that was missing from your description -- i.e. how you were starting node -- that was preventing others from helping you. Starting node with no arguments drops you into the REPL. This is an environment for interactively executing javascript. ...
How to find the last day of the month from date?
... in procedural -> $date1 = $year.'-'.$month; $d = date_create_from_format('Y-m',$date1); $last_day = date_format($d, 't');
– kayla
Jul 16 '13 at 1:05
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