通过存储在哈希表的字符串访问函数
it1352
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问题说明
如果我在哈希表中将函数名称存储为字符串.
是否可以通过存储的字符串访问函数?
If I have function names stored as strings in a Hashtable.
Is there a way to access the functions via the stored strings?
编辑 恐怕我在CLDC1.1/MIDP2.0上使用的平台不支持Reflection.
有什么解决方法?
EDIT I'm afraid the platform that i'm working on CLDC1.1/MIDP2.0 does not support Reflection.
Any workaround possible?
正确答案
#1
只需使用一长串else-if:
Just use a big long list of else-ifs:
[...]
} else if ("foo".equals(function)) {
target. foo();
} else if ("bar".equals(function)) {
target. bar();
[...]
(尽管我通常不喜欢在源代码中尝试垂直对齐，但我认为在这种情况下，这是非常值得的.)
(Although I generally don't like attempting vertical alignments in source, I think in cases like this it is well worth it.)
在映射中存储函子是一种替代方法，对于许多MIDP应用程序，bu可能会增加对象大小.
Storing a functor in the map is an alternative, bu might increase object size too much for many MIDP applications.
这篇好文章是转载于：学新通技术网
