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When to use nested classes and classes nested in modules?

I'm pretty familiar with when to use subclasses and modules, but more recently I've been seeing nested classes like this: 5...
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What are some resources for getting started in operating system development? [closed]

...ay the bootloader takes the machine code of the kernel, puts it in memory, and jumps to it. You can put any machine code in the kernel that you want, but most C programs expect an OS so you'll need to tell your compiler that it won't have all that, or the bootloader has to create some of it. The k...
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New line in JavaScript alert box

... I'm working in MVC 4, and creating a confirm() in the onsubmit event of an Html.BeginForm(). \n does not work for me. I get an Illegal token error when the code gets hit. Apparently you need to escape both the newline character and the backslash t...
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How to vertically align an image inside a div

... The only (and the best cross-browser) way as I know is to use an inline-block helper with height: 100% and vertical-align: middle on both elements. So there is a solution: http://jsfiddle.net/kizu/4RPFa/4570/ .frame { height...
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How to terminate the script in JavaScript?

... function (e) {e.preventDefault();e.stopPropagation();}, false); var handlers = [ 'copy', 'cut', 'paste', 'beforeunload', 'blur', 'change', 'click', 'contextmenu', 'dblclick', 'focus', 'keydown', 'keypress', 'keyup', 'mousedown', 'mousemove', 'mouseout', 'mouseover', 'mouseup', ...
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How do I parse a URL into hostname and path in javascript?

...("http://example.com/aa/bb/") Returns an object with properties hostname and pathname, along with a few others. The first argument is a relative or absolute URL; if it's relative, then you need to specify the second argument (the base URL). For example, for a URL relative to the current page: ne...
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How to print colored text in Python?

...Continue?{bcolors.ENDC}") This will work on unixes including OS X, linux and windows (provided you use ANSICON, or in Windows 10 provided you enable VT100 emulation). There are ansi codes for setting the color, moving the cursor, and more. If you are going to get complicated with this (and it sou...
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When is it better to use an NSSet over an NSArray?

... In your example, you are adding primitives to an array and a set. Neither is possible because they can only contain objects. – FreeAsInBeer Jun 12 '12 at 13:28 ...
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Condition within JOIN or WHERE

...al algebra allows interchangeability of the predicates in the WHERE clause and the INNER JOIN, so even INNER JOIN queries with WHERE clauses can have the predicates rearrranged by the optimizer so that they may already be excluded during the JOIN process. I recommend you write the queries in the mo...
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How do I fix “for loop initial declaration used outside C99 mode” GCC error?

I'm trying to solve the 3n+1 problem and I have a for loop that looks like this: 11 Answers ...