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21 条评论

geofft超过 11 年前

This seems to be the same as the cdecl program available in most Linux distributions (apt-get install cdecl).Websites for these little utilities are definitely useful, though. :)

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shurcooL超过 11 年前

Neat site!<pre><code> // declare foo as pointer to function (void) returning pointer to array 3 of int int (*(*foo)(void ))[3] </code></pre> That's actually a great example to throw at Go's syntax, which if you read from left-to-right, is perfectly one-to-one with the english:<pre><code> // declare foo as pointer to function (void) returning pointer to array 3 of int var foo *func() *[3]int </code></pre> <a href="http://play.golang.org/p/1b48cjmZbx" rel="nofollow">http://play.golang.org/p/1b48cjmZbx</a>

jankins超过 11 年前

This is a great helper for getting acquainted with the C spiral rule: <a href="http://c-faq.com/decl/spiral.anderson.html" rel="nofollow">http://c-faq.com/decl/spiral.anderson.html</a>

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k4st超过 11 年前

I also find this online utility useful when I don't have c++filt (another program available to Linux distros) available:<a href="http://pear.warosu.org/c++filtjs/" rel="nofollow">http://pear.warosu.org/c++filtjs/</a>This can be used to demangle C++ names.

coherentpony超过 11 年前

Maybe it's just me but having it written in English doesn't actually help me understand complex declarations.

brianmwaters_hn超过 11 年前

I'm really surprised nobody's mentioned that this is an exercise from K&R (a.k.a. "The C Programming Language"), a must-read for any C programmer!<a href="https://en.wikipedia.org/wiki/The_C_Programming_Language" rel="nofollow">https://en.wikipedia.org/wiki/The_C_Programming_Language</a>

JoshTriplett超过 11 年前

This has some odd corner cases."void f(void)" -> "declare f as function (void) returning void""void fun(void)" -> "declare fun as function (void) returning void""void funct(void)" -> "declare funct as function (void) returning void""void func(void)" -> "syntax error""func" is not a special name in C.Also:"void fn(void f(void))" -> "syntax error"But this syntax works just fine:<pre><code> /tmp$ cat test.c #include <stdio.h> void fn(void f(void)) { f(); f(); } void g(void) { puts("g"); } int main() { fn(g); return 0; } /tmp$ gcc test.c /tmp$ ./a.out g g</code></pre>

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Keyframe超过 11 年前

the hell is this witchcraft? <a href="http://cdecl.ridiculousfish.com/?q=cast+foo+into+block%28int%2C+long+long%29+returning+double" rel="nofollow">http://cdecl.ridiculousfish.com/?q=cast+foo+into+block%28int...</a>

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RossPenman超过 11 年前

C gibberish to English gibberish.

mistercow超过 11 年前

I wonder how difficult it would be to write a C compiler (probably using LLVM would make sense) that translates an entire C program into English.

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BlobbleBlab超过 11 年前

For most programmers, the C notation is probably easier to read / understand than the English gibberish derived from it with this tool

roryokane超过 11 年前

Note that this is “C gibberish ↔ English”, not just “to English”. So it also converts (specially-formatted) English to C gibberish. The second and third examples at the top demonstrate this feature.

fishpi超过 11 年前

I did something like this using C++ template metaprogramming, which means you can make use of the compiler to figure out the types for you, and you just have to write class templates to produce the English description. It's described at <a href="http://blog.asymptotic.co.uk/2011/02/c-type-declaration-decoder/" rel="nofollow">http://blog.asymptotic.co.uk/2011/02/c-type-declaration-deco...</a> , although somewhere along the line the markup got corrupted so the code samples don't quite render correctly.

jcox92超过 11 年前

I'm a fan of the 'c-spiral' rule/ <a href="http://c-faq.com/decl/spiral.anderson.html" rel="nofollow">http://c-faq.com/decl/spiral.anderson.html</a>

KiwiCoder超过 11 年前

Cool idea, although I expect everyone who understands the English version would also have understood the C version.

TorKlingberg超过 11 年前

Cdecl is quite useful, but it does not work if you have declared your own types."Foo a" declares a of type Foo (whatever that is), but cdecl says Syntax Error.It does not even work with C99 types. "bool a", "_Bool a", "int32_t a" all give Syntax Error.

mjburgess超过 11 年前

"I guess this'll be used mainly for function pointers"... first example.

justinhj超过 11 年前

I'd like to see an equivalent for parsing common shell commands and their arguments. Just converting the short form to the long form would be a good start

Madrigal超过 11 年前

It can be a useful tool to get the main "feeling" in a complex line of pointers, but I wouldn't use it to auto-generate explainer comments

nraynaud超过 11 年前

too bad it doesn't accept statements, I would be glad to get its take on a Duff's device.

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tbyehl超过 11 年前

I need a regex version of this.