All Questions
5 questions
12
votes
1
answer
2k
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What practical problem results from lack of hygienic macros in Clojure?
I've heard that Clojure macros are easier to write but not as reliable as Racket's hygienic macros. My question has 2 parts:
How does gensym differ from hygienic macros?
What do Racket macros provide ...
- 284
7
votes
1
answer
1k
views
Is it fair to say that "macros don't compose"?
On this blog post aphyr (who is a brilliant programmer) states:
Clojure macros come with some important restrictions. Because they’re expanded prior to evaluation, macros are invisible to functions. ...
- 4,859
20
votes
5
answers
5k
views
Python decorators and Lisp macros
When looking Python decorators someone made the statement, that they are as powerful as Lisp macros (particularly Clojure).
Looking at the examples given in PEP 318 it looks to me as if they are just ...
- 979
8
votes
3
answers
3k
views
When would I require a Macro instead of a function?
I am new to Clojure, I am new to Macros and I have no prior background in Lisp.
I went on to create my own switch case like form and ended up with this:
(defmacro switch-case [v cases default] (if (...
- 2,035
11
votes
3
answers
1k
views
Byte code weaving vs Lisp macros
I have been reading about the libraries people have written for languages like Java and C# that make use of byte code weaving to do things like intercept function calls, insert logging code, etc. I ...
- 1,611