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What is the difference between properties and attributes in HTML?

...in only one kind of value in the DOM, while some attributes (e.g. checked, selected) to retain two values; that is, the value "when it was loaded" and the value of the "dynamic state". (Isn't the DOM supposed to be to represent the state of the document to its full extent?) It is absolutely essenti...
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Is SHA-1 secure for password storage?

...") under the assumption that many user passwords will be in that specially selected space. Hence salting will at least prevent the attacker from using pre-computed tables, in particular pre-computed rainbow tables. This assumes that the attacker will be able to break one password or two; we do not ...
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How can I pair socks from a pile efficiently?

...d for other colors in everyday's life» A good standard rule for easy sock selection is actually that they should match either the color of your trousers or the color of your belt. For this reason, the most commonly used colors will likely be black, blue, gray and some brown. It's hard to believe on...
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How do I get Windows to go as fast as Linux for compiling C++?

...ss to Windows source code, it is rarely taken advantage of). Look at this selection of Unix-related performance papers: http://www.eecs.harvard.edu/margo/papers/ or look up the history of papers by Osterhaus, Henry Spencer, or others. Heck, one of the biggest (and most enjoyable to watch) debates i...
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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?

...Us can probably apply several optimization approaches in parallel and then select the one at the end that provides the best speedup. The extra instructions may be biasing the CPU to use one optimization path that is better than others. The effect of the extra instructions probably depends on the C...
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How to implement a rule engine?

..."Contains", "C#" ) }; // compile the rules once var compiledRules = rules.Select(r => CompileRule(r)).ToList(); public bool MatchesAllRules(User user) { return compiledRules.All(rule => rule(user)); } Here is the implementation of BuildExpr: Expression BuildExpr(Rule r, ParameterExpress...
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What is the difference between user and kernel modes in operating systems?

...d 2 aren't used? How is the current ring determined? The current ring is selected by a combination of: global descriptor table: a in-memory table of GDT entries, and each entry has a field Privl which encodes the ring. The LGDT instruction sets the address to the current descriptor table. See ...
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Perl build, unit testing, code coverage: A complete working example

...ESS_PERL_SWITCHES}. For example: -MDevel::Cover=+ignore,.t$,+inc,/app/lib,-select,MyModule.pm where /app/lib is the application-private library and MyModule.pm is the module under test. – Michael Carman Apr 27 '10 at 16:33 ...
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ServiceStack vs ASP.Net Web API [closed]

...solveService<T>() method which returns an auto-wired instance of the selected service as seen in the Nortwind CustomerDetails Service example: var ordersService = base.ResolveService<OrdersService>(); var ordersResponse = (OrdersResponse)ordersService.Get( new Orders { CustomerId = ...
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Set focus on TextBox in WPF from view model

... TextBoxBase; if (tb != null) { // Select all text to be ready for replacement. tb.SelectAll(); } } } #endregion Event Handlers } share ...