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Drew Colthorp www.atomicobject.com Clojure Macros https://github.com/dcolthorp/lj-macro-workspace
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experience
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homoiconicity
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Extensible Data Notation
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Forms
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quote
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eval
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funhouse
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extra credit
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funhouse extra credit Useful functions: first, rest, cons, quote. Useful functions: map
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funhouse solutions
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funhouse solutions
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macros
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clojure execution read macro expansion analysis/emission evaluation
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clojure execution read macro expansion analysis/emission evaluation
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clojure execution read macro expansion analysis/emission evaluation
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clojure execution read macro expansion analysis/emission evaluation
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clojure execution read macro expansion analysis/emission evaluation
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a language of macros
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a language of macros
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a language of macros
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a language of macros
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debug macro
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debug macro
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debug macro
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debug macro
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debug macro
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debug macro
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debug macro
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debug macro
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debug macro
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debug macro
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debug macro
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debug macro
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debug macro
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funhouse macros in-funhouse do-funhouse use: cons, map
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funhouse solutions
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funhouse solutions
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funhouse solutions
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syntax-quote
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syntax-quote
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syntax-quote
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syntax-quote
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syntax-quote
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syntax-quote
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qualified symbols
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qualified symbols
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qualified symbols
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qualified symbols
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qualified symbols read macro expansion analysis/emission evaluation
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qualified symbols
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qualified symbols
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qualified symbols
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variable capture
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variable capture
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variable capture
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variable capture
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variable capture
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variable capture
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variable capture
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variable capture
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variable capture
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variable capture
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gensyms
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gensyms
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gensyms
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gensyms
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gensyms
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gensyms
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gensyms
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gensyms
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gensyms
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syntax-quote: how to
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syntax-quote: how to
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syntax-quote: how to
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syntax-quote: how to
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syntax-quote: how to
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syntax-quote: how to
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syntax-quote: how to
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syntax-quote: how to
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syntax-quote: how to
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de-debug Hints: Syntax-quote everything and unquote macro arguments. Don’t use “list” at all.
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and-1 and-1 takes two arguments. The second argument short-circuits. and returns the value of the last evaluated expression.
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multiple execution
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debug
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and-1
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macro tradeoffs
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less transparent
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not functions
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not generally composable
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snowflakes
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macros are good for • transforming code – like debug or -> • flow control – like and or twice • binding variables • high performance abstraction
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high-performance abstraction
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macros using functions
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pre-str
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stringify-static useful functions: map, some-fn, keyword?, string?, number? extra credit: coalesce adjacent output strings into one
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pre-str solution
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pre-str solution
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recursive macros
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and-*
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and-* solution
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and-* solution
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code walking
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clojure.walk
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clojure.walk
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industrial funhouse
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industrial funhouse
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nested syntax-quote
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macro-writing macros
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macro-writing macros
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macro-writing macros
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deflet
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deflet
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deflet
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macrolet
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reloop
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reloop useful: gensym, loop, partition
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reloop
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reloop
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symbol-macrolet
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lazy deflet
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Extra
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levels of quotation
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