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Clojure differences between Ref, Var, Agent, Atom, with examples

...here to use Ref, Var, Agent, Atom. I read book, but, still couldn't understand the real world examples. 5 Answers ...
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Boolean method naming readability

Simple question, from a readability standpoint, which method name do you prefer for a boolean method: 12 Answers ...
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Is it better in C++ to pass by value or pass by constant reference?

...l types, except for builtin types (char, int, double, etc.), for iterators and for function objects (lambdas, classes deriving from std::*_function). This was especially true before the existence of move semantics. The reason is simple: if you passed by value, a copy of the object had to be made an...
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How does HTTP file upload work?

... Let's take a look at what happens when you select a file and submit your form (I've truncated the headers for brevity): POST /upload?upload_progress_id=12344 HTTP/1.1 Host: localhost:3000 Content-Length: 1325 Origin: http://localhost:3000 ... other headers ... Content-Type: multip...
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C/C++ include header file order

...ed without prerequisites (terminus technicus: header is "self-contained"). And the rest just seems to flow logically from there. share | improve this answer | follow ...
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Sending a mail from a linux shell script

I want to send an email from a Linux Shell script. What is the standard command to do this and do I need to set up any special server names? ...
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What is a WeakHashMap and when to use it? [duplicate]

What is a WeakHashMap and when should one be using it? What are the differences between a WeakHashMap and a HashMap ? ...
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How to set ViewBag properties for all Views without using a base class for Controllers?

... Un-tried by me, but you might look at registering your views and then setting the view data during the activation process. Because views are registered on-the-fly, the registration syntax doesn't help you with connecting to the Activated event, so you'd need to set it up in a Module: ...
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Best practices for storing postal addresses in a database (RDBMS)?

...resses in an RDBMS? It seems there are lots of tradeoffs that can be made and lots of pros and cons to each to be evaluated -- surely this has been done time and time again? Maybe someone has at least written done some lessons learned somewhere? ...
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How to define an enumerated type (enum) in C?

... Declaring an enum variable is done like this: enum strategy {RANDOM, IMMEDIATE, SEARCH}; enum strategy my_strategy = IMMEDIATE; However, you can use a typedef to shorten the variable declarations, like so: typedef enum {RANDOM, IMMEDIATE, SEARCH} strategy; strategy my_strategy = IMME...