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Call Objective-C code from javascript on Mac OS X and the iPhone (via the libffi-iphone port). Mozilla libffi is used in the js-ctypes library (previously known as ctypes.jsm) to call C functions within JavaScript code (available in XULRunner applications, Firefox extensions etc). [5] node-ffi
Immediately invoked function expressions can be used to avoid variable hoisting from within blocks, protecting against polluting the global environment and simultaneously allowing public access to methods while retaining privacy for variables defined within the function. In other words, it wraps functions and variables, keeping them out of the ...
Go can call C code directly via the "C" pseudo-package. [12] Google Web Toolkit (GWT), in which Java is compiled to JavaScript, has an FFI named JSNI which allows Java source code to call arbitrary JavaScript functions, and for JavaScript to call back into Java. Haskell
A function pointer, also called a subroutine pointer or procedure pointer, is a pointer referencing executable code, rather than data. Dereferencing the function pointer yields the referenced function, which can be invoked and passed arguments just as in a normal function call.
This makes the calling code concise and readable even if the function is not meant to be reused. Improving traceability (i.e. most languages offer ways to obtain the call trace which includes the names of the involved functions and perhaps even more information such as file names and line numbers); by not decomposing the code into functions ...
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The nested function technology allows a programmer to write source code that includes beneficial attributes such as information hiding, encapsulation and decomposition.The programmer can divide a task into subtasks which are only meaningful within the context of the task such that the subtask functions are hidden from callers that are not designed to use them.