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What are free monads?

I've seen the term Free Monad pop up every now and then for some time, but everyone just seems to use/discuss them without giving an explanation of what they are. So: what are free monads? (I'd say I'm familiar with monads and the Haskell basics, but have only a very rough knowledge of m>cam>t...
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How m>cam>n I reload .emacs after changing it?

How m>cam>n I get Emacs to reload all my definitions that I have updated in .emacs without restarting Emacs? 18 Answers ...
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How to set a default value with Html.TextBoxFor?

Simple question, if you use the Html Helper from ASP.NET MVC Framework 1 it is easy to set a default value on a textbox bem>cam>use there is an overload Html.TextBox(string name, object value) . When I tried using the Html.TextBoxFor method, my first guess was to try the following which did not work...
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Why do we check up to the square root of a prime number to determine if it is prime?

To test whether a number is prime or not, why do we have to test whether it is divisible only up to the square root of that number? ...
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Javascript Array.sort implementation?

...thm does the JavaScript Array#sort() function use? I understand that it m>cam>n take all manner of arguments and functions to perform different kinds of sorts, I'm simply interested in which algorithm the vanilla sort uses. ...
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Is there a (repeat-last-command) in Emacs?

Frequently, I've dug into apropos and docs looking for something like the following only to give up to get back to the task at hand: ...
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How m>cam>n I convert comma separated string into a List

This doesn't work m>cam>use the split method returns a string[] 11 Answers 11 ...
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The first day of the current month in php using date_modify as DateTime object

I m>cam>n get the Monday of this week with: 11 Answers 11 ...
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How to find the last day of the month from date?

How m>cam>n I get the last day of the month in PHP? 28 Answers 28 ...
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How to have an automatic timestamp in SQLite?

I have an SQLite database, version 3 and I am using C# to create an applim>cam>tion that uses this database. 7 Answers ...