“layout function”中使用的某些函数显然不存在,但“layout”工作正常。但当您尝试将“layout function”替换为包含一些调试语句的改编版本时,这些函数和未声明的变量将立即导致错误。
函数绑定?和绑定吗?例如,不显示已使用的跟踪函数的结果,因此使用这些函数不会获得额外的信息。对do-facets和grow facets函数特别感兴趣。
发布于 2020-04-25 19:10:43
以下是在Rebol 2中创建匿名上下文的两种方法:
context [
semi-hidden-function: does [print "ok"]
set 'non-hidden-function does [semi-hidden-function]
]
use [semi-hidden-function] [
semi-hidden-function: does [print "ok"]
set 'non-hidden-function does [semi-hidden-function]
]在第一种形式中,您可以到达单词semi-hidden-function的上下文
>> probe bound? first body-of :non-hidden-function
make object! [
semi-hidden-function: func [][print "ok"]
]但在第二种形式中,你可能不会:
>> probe bound? first body-of :non-hidden-function
make object! [
]我看到许多Reboler使用上述形式中的一种,不仅是为了隐藏,而且为了保持主函数的整洁和分离。
这里我还添加了你喜欢看到的函数,它有点长,所以我压缩了& enbased:
您可以简单地将下面的代码行粘贴到控制台,复制下面的文本并执行下面的代码行将其解压缩:write clipboard:// decompress debase trim/lines read clipboard://
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OXhiCQMpjojZ3hWJQ3aJCu5drDzZJRq0d4nsiCsL0N4niii+rI17X/4mYl/WxLr7C5ZY7idACQAA发布于 2020-04-24 21:44:14
您可以在sdk的源文件中找到定义,例如
track: func [blk] [if verbose [print blk]]在view-vid.r中。r
这里是一个帮助器函数,用于在未知上下文中获取单词/函数的定义/源,例如,无需访问sdk
find-anon: func [ words fn /local ] [
foreach word words [
if word = fn [set :fn probe get word halt]
if block? word [
find-anon word fn
]
]
]
find-anon second :layout 'grow-facets
help grow-facetshttps://stackoverflow.com/questions/61409054
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