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What optimizations can GHC be expected to perform reliably?

... also explains the passes fairly well. This page explains the optimization ordering, though, like the majority of the Trac Wiki, it is out of date. For specifics, the best thing to do is probably to look at how a specific program is compiled. The best way to see which optimizations are being perfor...
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Get user profile picture by Id

... is mostly based of facebook graph api. I hold some data about users - actually , the possible public data available - such as name and id. I also know that a profile picture is a part of the public data, and I wondered how I'll be able to get a direct link to a profile picture of a user only by usi...
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What does @@variable mean in Ruby?

...the classes; setting the value in an instance of one changes the value for all other instances of that class and even child classes, where a variable named @shared, with one @, would not be. [Update] As Phrogz mentions in the comments, it's a common idiom in Ruby to track class-level data with an ...
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Proper SCSS Asset Structure in Rails

...e problem with CSS is, you do not want to automatically add all files. The order of which your sheets are loaded and processed by the browser is essential. So you will always end up explicitly importing all your css. As an example, lets say you have a normalize.css sheet, to get a default look ins...
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Calling C/C++ from Python?

...ntrusively, so that you should not have to change the C++ code at all in order to wrap it, making Boost.Python ideal for exposing 3rd-party libraries to Python. The library's use of advanced metaprogramming techniques simplifies its syntax for users, so that wrapping code takes on the look o...
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foreach vs someList.ForEach(){}

...eling is, on a new project, to use foreach(item in list) for most loops in order to adhere to the common usage and for readability, and use list.Foreach() only for short blocks, when you can do something more elegantly or compactly with the C# 3 "=>" operator. In cases like that, there may alread...
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Get Base64 encode file-data from Input Form

...beginning stuff (up to the first ,), but that's no biggie. This would take all the fun out though. The hard way: If you want to try it the hard way (or it doesn't work), look at readAsArrayBuffer(). This will give you a Uint8Array and you can use the method specified. This is probably only useful ...
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Is it possible to push a git stash to a remote repository?

...ged. Also, piping the result of git rev-list ... through tac reverses the order of the stashes so they come out in the same order. – Alan Krueger Dec 4 '12 at 22:35 ...
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How many files can I put in a directory?

... We have hundreds of thousands of images in our social network website. In order to improve the performance we were forced to have 100 (or 1000 for some files) sub directories and distribute the files into them (ext3 on linux+ Apache for us). – wmac Jul 24 '14 ...
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Turn off constraints temporarily (MS SQL)

..._SCHEMA AS TableSchema FROM INFORMATION_SCHEMA.TABLES t ORDER BY t.TABLE_NAME, t.TABLE_SCHEMA OPEN triggerCursor FETCH NEXT FROM triggerCursor INTO @tableName, @tableSchema WHILE ( @@FETCH_STATUS = 0 ) BEGIN SET @sql = 'ALTER TABLE ' + @tableSchema + '...