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Difference between `constexpr` and `const`

...zation. constexpr declares an object as fit for use in what the Standard calls constant expressions. But note that constexpr is not the only way to do this. When applied to functions the basic difference is this: const can only be used for non-static member functions, not functions in general. I...
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How do I copy an object in Java?

...oes for primitives. For non-primitives, you would just do copy contructor call recursively. e.g. If DummyBean referenced FooBar then FooBar should have contructor FooBar(FooBar another), and dummy should call this.foobar = new FooBar(another.foobar) – egaga Feb...
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Grab a segment of an array in Java without creating a new array on heap

...wer by @unique72 is correct. Imma let this edit sit for a bit and then I shall delete this answer.) I don't know of a way to do this directly with arrays without additional heap allocation, but the other answers using a sub-list wrapper have additional allocation for the wrapper only – but not...
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How to hash a password

... I would REALLY recommend using SHA1. MD5 is a no-no unless you are maintaining backward compatibility with an existing system. In addition, make sure you put it in a using statement or call Clear() on it when you are done using the imp...
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What do “branch”, “tag” and “trunk” mean in Subversion repositories?

...ode in the trunk. If the major changes work according to plan, they are usually merged back into the trunk. Tag will be a point in time on the trunk or a branch that you wish to preserve. The two main reasons for preservation would be that either this is a major release of the software, whether alp...
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Are there any coding standards for JavaScript? [closed]

...7, he says don't worry so much about style guides/code standards, reformat all code checked in to VCS. Also these: Mozilla JavaScript Tips JavaScript Style Guide share | improve this answer ...
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What is the difference between UTF-8 and ISO-8859-1?

...e points of the Unicode character set, whereas UTF-8 can be used to encode all code points. At physical encoding level, only codepoints 0 - 127 get encoded identically; code points 128 - 255 differ by becoming 2-byte sequence with UTF-8 whereas they are single bytes with Latin-1. ...
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How can I run a PHP script in the background after a form is submitted?

...f subscribers and send out 150+ emails. (The emails are being sent individually as requested by the system administrators of our email server because of mass email policies.) ...
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Disable browser cache for entire ASP.NET website

...; HttpContext.Current.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches); HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache); HttpContext.Current.Response.Cache.SetNoStore(); All requests get routed through default.aspx first - so assuming you can just pop in...
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How can I add an item to a SelectList in ASP.net MVC

Basically I am looking to insert an item at the beginning of a SelectList with the default value of 0 and the Text Value of " -- Select One --" ...