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Migrating from JSF 1.2 to JSF 2.0

...ribute of the @ManagedBean, then it will default to classname with the 1st char lowercased. @ManagedBean @RequestScoped public class SomeBean {} In this particular example, it will be #{someBean}. Any <managed-property> can be annotated using @ManagedProperty: @ManagedProperty("#{otherBe...
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ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C++内核技术

.....);zmq_connect (s, "tcp://192.168.0.111:5555");/* Message routing */const char data [] = "ABC";zmq_send (s, data, sizeof (data), 0); 区分拓扑建立和消息路由严格地说不是不可缺少的。毕竟,混合这两个为一个单独的函数是很容易的: zmq_send (s, "tcp://192.168.0....
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What is the difference between canonical name, simple name and class name in Java Class?

...riptor of the primitives are Z for boolean, B for byte, S for short, C for char, I for int, J for long, F for float and D for double. For non-array classes and interfaces the class descriptor is L followed by what is given by getName() followed by ;. For array classes, the class descriptor is [ foll...
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What is the difference between localStorage, sessionStorage, session and cookies?

...e Mozilla source code we can see that 5120KB (5MB which equals 2.5 Million chars on Chrome) is the default storage size for an entire domain. This gives you considerably more space to work with than a typical 4KB cookie. The data is not sent back to the server for every HTTP request (HTML, images, J...
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How do you detect Credit card type based on number?

...: before processing a cardholder PAN, strip any whitespace and punctuation characters from the input. Why? Because it’s typically much easier to enter the digits in groups, similar to how they’re displayed on the front of an actual credit card, i.e. 4444 4444 4444 4444 is much easier to ent...
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What's the difference between a temp table and table variable in SQL Server?

...ble variables consumes 236 less bytes than for #temp tables (118 fewer nvarchar characters). Full script to reproduce (best run on an instance started in single user mode and using sqlcmd mode) :setvar tablename "@T" :setvar tablescript "DECLARE @T TABLE" /* --Uncomment this section to test a #...
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How do I grant myself admin access to a local SQL Server instance?

... Pretty straightforward and works like a charm. Thanks Vince and maets. – Edgar Salazar Apr 8 '16 at 19:01 1 ...
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How exactly does __attribute__((constructor)) work?

...unction call to any of the functions declared above */ int main (int argc, char *argv[]) { printf ("\n\t [ main body of program ]\n"); return 0; } output: init_some_function() called by elf_init() elf_init() -- (.section .init) construct1() constructor -- (.section .ctors) pr...
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How to use base class's constructors and assignment operator in C++?

...No operator=() defined }; class Derived : public ImplicitBase { const char* name_; public: Derived& operator=(const Derived& d) { ImplicitBase::operator=(d); // Call compiler generated operator= name_ = strdup(d.name_); return *this; } }; ...
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What are the main purposes of using std::forward and which problems it solves?

...f we leave t1 & t2 as lvalue? If, after instantiating, T1 is of type char, and T2 is of a class, you want to pass t1 per copy and t2 per const reference. Well, unless inner() takes them per non-const reference, that is, in which case you want to do so, too. Try to write a set of outer() func...