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Which is faster : if (bool) or if(int)?

...s a bool as an 8-bit value, and your system ABI requires it to "promote" small (< 32-bit) integer arguments to 32-bit when pushing them onto the call stack. So to compare a bool, the compiler generates code to isolate the least significant byte of the 32-bit argument that g receives, and compares...
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Proper Repository Pattern Design in PHP?

...te a complete example of a basic controller for viewing and editing Users. All code must be fully testable and mockable. The controller should have no idea where the data is stored (meaning it can be changed). Example to show a SQL implementation (most common). For maximum performance, controllers s...
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不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...编号越小优先级越高。例如如下路由规则: 0: from all lookup local 32766: from all lookup main 32767: from all lookup default 优先级最高的规则是0,要查询的路由表名称是local,其次是32766,要查询的路由表名称是main,后面依此...
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Why are unnamed namespaces used and what are their benefits?

...ng directive already took place. This means you can have free functions called (for example) help that can exist in multiple translation units, and they won't clash at link time. The effect is almost identical to using the static keyword used in C which you can put in in the declaration of identif...
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Is it better in C++ to pass by value or pass by constant reference?

... It used to be generally recommended best practice1 to use pass by const ref for all types, except for builtin types (char, int, double, etc.), for iterators and for function objects (lambdas, classes deriving from std::*_function). This was es...
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What is your naming convention for stored procedures? [closed]

...ow the database is at 700 procedures plus, it becomes a lot harder to find all procedures on a specific object. For example i now have to search 50 odd Add procedures for the Product add, and 50 odd for the Get etc. Because of this in my new application I'm planning on grouping procedure names by o...
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Swift: #warning equivalent

...builds clean in production, but I get a warning in development that essentially reminds me I'm in dev mode - using different URLs, timeouts, other settings etc. Arie's suggestion above lets me do this, your technique just flags everything. That said, this technique has its use for sure so I up voted...
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Event system in Python

...r methods', which is a simple implementation of the Observer pattern. Basically, the handler methods (callables) are stored in an array and are each called when the event 'fires'. Publish-Subscribe The disadvantage of Observer event systems is that you can only register the handlers on the actual Ev...
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How to import a module given the full path?

... path from its cache. In my case I aimed at creating a plugin system where all plugins implement a specific classX. I ended up using SourceFileLoader, note that its deprecation is controversial. – ComFreek Jul 3 '15 at 17:18 ...
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What's the difference between lists and tuples?

.... A list on the other hand could be used to store multiple locations. Naturally one might want to add or remove locations from the list, so it makes sense that lists are mutable. On the other hand it doesn't make sense to add or remove items from an existing location - hence tuples are immutable. T...