问题
Is there (or was there ever) any non-trivial language that allows spaces in its variable names?
I am aware of the language Whitespace, but I'm interested in a language that was actually used for something besides demonstration.
I ask this out of pure curiosity.
回答1:
In a way, yes. Several languages's variable names are really just keys to a higher-level object. Both Coldfusion and Javascript come to mind. In Javascript, you can write foo=bar, but what you've really said is:
window['foo'] = bar;
You could just as easily write
window['i haz a name'] = bar;
The various scopes in Coldfusion can also be treated as either a (dict|hash|associative array) or a name.
Of course, once you've created a name with whitespace, it's harder to access without using the hash lookup syntax.
回答2:
TSQL will allow you to use whitespace in table and column names aslong as you have it between square braces [ ]
Theres a fantastic article on just what sql will let you get away with here http://www.sqlservercentral.com/blogs/philfactor/archive/2009/08/14/evil-code.aspx
来源：https://stackoverflow.com/questions/5141160/is-there-any-language-that-allows-spaces-in-its-variable-names