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Frequently Asked Questions

Can inline functions have a recursion?

Syntax wise It is allowed. But then the function is no longer Inline. As the compiler will never know how deep the recursion is at compilation time.
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What are inline functions good for?

FAQs | DevelopersVoice.com
Inline functions are best used for small functions such as accessing private data members. The main purpose of these inline functions (usually one or two lines of code) is to return state information about objects; short functions are sensitive to the overhead of function calls. Longer functions spend proportionately less time in the calling/returning sequence and benefit less from inlining.
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When should I use macro and when inline functions?

FAQs | DevelopersVoice.com
Besides the difference already pointed out, you also must have in mind that because macros are expanded at pre-compile time, you cannot use them for debugging, but you can use inline functions. In this example you can put a breakpoint in foo::maxim and step into the method, though it is an inline function.
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What's the deal with inline functions?

Inline functions, C++ FAQ Lite
When the compiler inline-expands a function call, the function's code gets inserted into the caller's code stream (conceptually similar to what happens with a #define macro). This can, depending on a zillion other things, improve performance, because the optimizer can procedurally integrate the called code — optimize the called code into the caller. There are several ways to designate that a function is inline, some of which involve the inline keyword, others do not.
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Do inline functions improve performance?

Inline functions, C++ FAQ Lite
There are no simple answers. inline functions might make the code faster, they might make it slower. They might make the executable larger, they might make it smaller. They might cause thrashing, they might prevent thrashing. And they might be, and often are, totally irrelevant to speed. inline functions might make it faster: As shown above, procedural integration might remove a bunch of unnecessary instructions, which might make things run faster.
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Can I define operators using recursion?

Larch Frequently Asked Questions
Yes, you can define operators recursively. A good, and safe, way to do this is to use structural induction (e.g., on the generators of a sort). For example, look at how count is defined in the handbook trait BagBasics (see [Guttag-Horning93], p. 168). In this trait, the sort C of bags is generated by the operators {} and insert. There is one axiom that specifies count when its second argument is the empty bag, and one that specifies count when its argument is constructed using insert.
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Iā??m confused about the use of inline functions and macros. What is the difference between them?

FAQs | DevelopersVoice.com
Inline functions are similar to macros because they both are expanded at compile time, but the macros are expanded by the preprocessor, while inline functions are parsed by the compiler. There are several important differences: Inline functions are specified using the same syntax as any other function except that they include the inline keyword in the function declaration. Expressions passed as arguments to inline functions are evaluated once.
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Are "inline virtual" member functions ever actually "inlined"?

Reference and value semantics, C++ FAQ Lite
When the object is referenced via a pointer or a reference, a call to a virtual function cannot be inlined, since the call must be resolved dynamically. Reason: the compiler can't know which actual code to call until run-time (i.e., dynamically), since the code may be from a derived class that was created after the caller was compiled.
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What special considerations are needed when forward declarations are used with inline functions?

Miscellaneous technical issues, C++ FAQ Lite
The compiler will give you a compile-time error if the first class contains an inline function that invokes a member function of the second class. For example, There are a number of ways to work around this problem. One workaround would be to define Barney::method() with the keyword inline below the definition of class Fred (though still within the header file). Another would be to define Barney::method() without the keyword inline in file Barney.cpp. A third would be to use nested classes.
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How can inline functions help with the tradeoff of safety vs. speed?

Inline functions, C++ FAQ Lite
In straight C, you can achieve "encapsulated structs" by putting a void* in a struct, in which case the void* points to the real data that is unknown to users of the struct. Therefore users of the struct don't know how to interpret the stuff pointed to by the void*, but the access functions cast the void* to the appropriate hidden type. This gives a form of encapsulation.
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Why should I use inline functions instead of plain old #define macros?

Inline functions, C++ FAQ Lite
Because #define macros are evil in 4 different ways: evil#1, evil#2, evil#3, and evil#4. Sometimes you should use them anyway, but they're still evil. Unlike #define macros, inline functions avoid infamous macro errors since inline functions always evaluate every argument exactly once. In other words, invoking an inline function is semantically just like invoking a regular function, only faster:
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Do I have to learn recursion?

littleb.org - home of the little b modular modeling language
Those of you who asked "why lisp?" may be thinking this. Contrary to popular belief, programming in LISP does not necessarily require one to master the techniques of recursive programming. This misconception is largely due to the fact that teaching of Scheme, a minimalist dialect of LISP, has often emphasized the use of recursive functions in place of procedural loops1.
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Is nested inline markup possible?

Docutils FAQ (Frequently Asked Questions)
Not currently, no. It's on the to-do list (details here), and hopefully will be part of the reStructuredText parser soon. At that time, markup like this will become possible: Here is some *emphasized text containing a 'hyperlink'_ and ''inline literals''*. Inline markup can be combined with hyperlinks using substitution definitions and references with the "replace" directive. For example: Here is an |emphasized hyperlink|_. .. |emphasized hyperlink| replace:: *emphasized hyperlink* .
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Can you show me how to use inline Style?

Mandarin Design: Frequently Asked Questions
Copy and paste (or type) this in your Blog or Web page. <p style="font-family:verdana; font-weight:bold; font-size:12px; color:orange">YOUR TEXT GOES HERE</p> You can change the font-weight to normal or the font-size from 12px to 80%. To change colors check out the Color Chart.
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What is 'the reverse tax engine'? 'recursion'?

RRIFmetic - Retirement Math Made Easy
While income tax is a relatively simple calculation (after all, some of us still do our T1 by hand); for the purpose of financial planning, we need to compute tax from the bottom up. .... "I need $30,000 after tax, to live on. How much should I draw from (or put to) savings in order to exactly deliver $30K?" Think about it. Fire up your Cantax and try to come up with that exact after-tax amount.
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What is left-recursion and why can't I use it?

The JavaCC FAQ
Left-recursion is when a nonterminal contains a recursive reference to itself that is not preceded by something that will consume tokens. The parser class produced by JavaCC works by recursive descent. Left-recursion is banned to prevent the generated subroutines from calling themselves recursively ad-infinitum. Consider the following obviously left recursive production
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What are inline races like?

FAQ & Team Rainbo Inline Speedskating Chicago
Races are a lot of fun, first and foremost. At any event there are many different groups of skaters, from the elite pros to the recreational skater. Most events start off in "waves" where the most skilled skaters leave first, and the recreational skaters leave last. This allows you to skate with people at your level without fear of either getting run over or getting caught in a group that is too slow. Many races have multiple distances, they are not all marathons.
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What Are Other Inline Elements?

XHTML Webmaster Tutorials, Tips and FAQs
A collection of 16 FAQs/tutorials tips on XHTML hyper links and URLs. Clear answers are provided with tutorial exercises on anchor tags/elements, URL structures, different formats of URLs, hyper links to image, music, PDF and ZIP files, opening documents in new windows.
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Can I inline skate?

FAQ - Shuffle 2007 - Concordia University - Montreal, Quebec...
You can inline skate, cycle, run, or walk – as long as you have fun doing it! Some participants even choose to push their little ones in strollers or walk their pets.
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What are Functions?

FAQ - Frequently Asked Questions | ScriptSpot
Functions are specific pieces of code that can easily be reused between scripts. Functions are NOT self running scripts. As a rule, if you don't know what a function is, then you definately don't need it...Functions are for people who create scripts, not people who use scripts...But, if you want to know - a function is a programming term for a block of code that does something you can reuse.
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When should I use inline?

Tech Talk about C++ and C Issues / Comeau C++ and C FAQ
A main premise of inline is that it should be used when the overhead of calling a function is higher that the overhead of the function itself. For instance here: foo(a, b, c); The overhead of passing the 3 arguments, setting up returning to the call location, etc. might actually be higher than the cost of what the function does with the arguments. This normally means an inline function would be a small function, for some definition of small.
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Is it possible to mix recursion and parallel composition?

CADP FAQ
if the "process recursion is not allowed on the left and right hand part of |[...]|, nor on the left hand part of >> and [>" then will the following specification work properly? specification ManagementSystem[l,f,t,c,d,s,sop]:noexit behaviour ManagementApplications[l,f,t,c,d,s,sop] |[l,f,t,c,d,s,sop]| MangementPlatform[l,f,t,c,d,s,sop] where process ManagementApplications[l,f,t,c,d,s,sop]:noexit:= (* is infinite, with several parallel applications for performance, log, security ..
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How does jparsec handle left-recursion?

JParsec - FAQ
Left-recursion is hard to handle in recursive-descent parser. jparsec is no exception. You have to avoid left-recursion in your grammar. Nontheless, jparsec does provide a few combinators that handles some normal left-recursion for you. For example, a left-associative binary operator is naturally represented in a left-recursive notation in EBNF: final Parser plus_op = Scanners.isChar('+') .seq(Parsers.retn(new Map2(){ public Object map(Object o1, Object o2){ return new Integer(((Integer)o1).
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What are the functions of the liver?

WebHealthCentre.com - Expertspeak
Liver is responsible for a variety of protein syntheses. It helps in the synthesis of substances for clotting of blood, as well as albumin (the most important protein).
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Why do my autoloaded functions not autoload [the first time]?

Z-Shell Frequently-Asked Questions
The problem is that there are two possible ways of autoloading a function (see the AUTOLOADING FUNCTIONS section of the zsh manual page zshmisc for more detailed information): The file contains just the body of the function, i.e. there should be no line at the beginning saying function foo { or foo () {, and consequently no matching } at the end. This is the traditional zsh method. The advantage is that the file is called exactly like a script, so can double as both.
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Is it possible for me to create my own fitness functions?

Gepsoft - Frequently Asked Questions
Yes, you can create very interesting custom fitness functions as GeneXproTools gives you access not only to basic parameters such as the number of samples, averaged target output, and so forth but also useful information about the topology of the evolving models such as program size, used variables, and number of literals. Is it possible to modify the evolved equation by hand and then run the program? This would be useful when trying to simplify the equation by hand.
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What are the functions of the kidneys?

Delmar Cengage Learning Companion - Nursing Fundamentals: Ca...
The kidneys filter the flood and produce urine, and is thereby important in fluid and electrolyte balance. The kidneys also produce erythropoietin, a hormone that assists in the production of red blood synthesis, and has a role in vitamin D synthesis.
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Will Motif _Xm functions be implemented?

LessTif Frequently Asked Questions
This was not easy though. The _Xm* functions seem to be undocumented in Motif 1.2 therefore we will make every effort to implement the functions as best we can. One of our sources of information was "Writing Your Own OSF/MOTIF Widgets" by McMinds and Whitty, kindly donated to us by Linux International. Two widgets that accept text input (namely XmText and XmTextField) do support it, but they don't feature multibyte support.
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What are canalizing functions and forcing structures ?

Self-Organizing Systems FAQ for Usenet newsgroup comp.theory...
A function is canalizing if a single input being in a fixed state is sufficient to force the output to a fixed state, regardless of the state of any other input. For example, for an AND gate if one input is held low then the output is forced low, so this function is canalizing. An XOR gate, in contrast, is not since the state can always change by varying another input.
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