关于宏的小测验 [英] A little quiz on macros

问题描述

如何用宏实现静态字典？


例如，五行


PL_FIND（MYDICT，HOUSE）

PL_FIND（MYDICT，AUTO）

PL_FIND（MYDICT，THIS_IS_NOT_IN_THE_DICTIONARY）

PL_FIND（MYDICT，jhgjhguytuyhkgjhg）

PL_FIND （MYDICT，3498fjkhdlkh34098jhf）


应该产生：


house_definition

auto_definition

symbol_not_found

symbol_not_found

symbol_not_found


Kiuhnm

How would you implement a static dictionary with macros?

For example, the five lines

PL_FIND(MYDICT, HOUSE)
PL_FIND(MYDICT, AUTO)
PL_FIND(MYDICT, THIS_IS_NOT_IN_THE_DICTIONARY)
PL_FIND(MYDICT, jhgjhguytuyhkgjhg)
PL_FIND(MYDICT, 3498fjkhdlkh34098jhf)

should produce:

house_definition
auto_definition
symbol_not_found
symbol_not_found
symbol_not_found

Kiuhnm

推荐答案

Kiuhnm<" kiuhnm03 [" @] yahoo.it>写道：

Kiuhnm <"kiuhnm03["@]yahoo.it> wrote:

你如何用宏实现一个静态字典？

How would you implement a static dictionary with macros?

我不会。学习愚蠢的预处理技巧是一个灾难性的b
灾难;你_will_在生产代码中使用它们，并且_will_

创造性地和令人头疼的错误。


下一个！


Richard

I wouldn''t. Learning stupid preprocessor tricks is a recipe for
disaster; you _will_ use them in production code, and that _will_ go
creatively and headache-inducingly wrong.

Next!

Richard

Richard Bos ha scritto：

Richard Bos ha scritto:

我不会。学习愚蠢的预处理技巧是灾难的一个秘诀;你_will_会在生产代码中使用它们，并且_will_会创造性地和令人头疼的错误。

I wouldn''t. Learning stupid preprocessor tricks is a recipe for
disaster; you _will_ use them in production code, and that _will_ go
creatively and headache-inducingly wrong.

C语言是一种技巧。 C ++语言是一个技巧。大会

语言是一招。杠杆是一个技巧。我们看到的是一招。然后

那又怎样？我们应该限制好奇心和创造力吗？我不这么认为。

一个小小的测验是一个小小的测验，而不是建立强大的工业应用程序的秘诀。无论如何，我很确定有一个标准的

描述了C预处理器。


Kiuhnm

The C language is a trick. The C++ language is a trick. The assembly
language is a trick. A lever is a trick. What we see is a trick. And
then what? Should we limit our curiosity and creativity? I don''t think so.
A little quiz is a little quiz, not a recipe for building strong
industrial applications. Anyway I was quite sure there was a standard
describing the C preprocessor.

Kiuhnm

在2006-05-10，Kiuhnm< kiuhnm03 ["]>写道：

On 2006-05-10, Kiuhnm <"kiuhnm03["@> wrote:

Richard Bos ha scritto：

Richard Bos ha scritto:

我不会。学习愚蠢的预处理技巧是灾难的一个秘诀;你_will_在生产代码中使用它们，并且_will_将创造性地和令人头疼的错误。

I wouldn''t. Learning stupid preprocessor tricks is a recipe for
disaster; you _will_ use them in production code, and that _will_ go
creatively and headache-inducingly wrong.

C语言是一个技巧。 C ++语言是一个技巧。汇编语言是一种伎俩。杠杆是一个技巧。我们看到的是一招。

The C language is a trick. The C++ language is a trick. The assembly
language is a trick. A lever is a trick. What we see is a trick.

当然可以。不同之处在于他们并不愚蠢。

Sure they are. The difference is they''re not stupid.

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