無精で短気で傲慢なプログラマ find には sh!
ウノウラボ Unoh Labs: コマンドラインで作業する上で知っておくといいテクニック% find . -name '*~' -exec rm {} \; 404 Blog Not Found:勝手に添削 - find(1)% find . -type f -name '*~' | xargs rm % find . -type f -name '*~' | perl -nle unlink わたしなら% find . -type f -name '*~' | sed 's/^/rm /'で確認し、OK なら% find . -type f -name '*~' | sed 's/^/rm /' | shで消します。 いまどき fork/exec rm のオーバーヘッドがどれほどのものか。 xargs を使うとき、rm が 1回だけ実行されるときと、ARG_MAX を超えたときに rm
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Domain Driven Design - Inject Repositories, not DAOs in Domain Entities There are some discussions in Spring forum, of late, regarding injection of repositories in the domain objects. And in the context of the data access layer, there appears to be some confusion regarding the difference between DAOs and repositories. A data access object(DAO) is the contract between the relational database and th
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Lift :: Home
When I decided to put Innovation Games® online, I knew that I couldn't afford a massive development effort. I needed a small, sharp team who could leverage best-in-class tools to help us solve the problems we knew that we'd have to solve in creating a new kind of collaborative gaming experience on the web. David suggested Lift and Scala and initial testing proved that we could realize the develope
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5.4 Nested Functions A nested function is a function defined inside another function. (Nested functions are not supported for GNU C++.) The nested function's name is local to the block where it is defined. For example, here we define a nested function named square, and call it twice: foo (double a, double b) { double square (double z) { return z * z; } return square (a) + square (b); } The nested
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Parsecの使い方が分かったよ！超簡単じゃん！(今更)前はHaskellの基本もよく理解できてなかったから、その詳細に呑まれてたんだなぁ。Haskell使って2日目とか3日目だったし。てことで、S式っぽいもののパーサ。(2 . 3)みたいなのはパースできないけど、今回の目的には必要ないので、わざと。 import Text.ParserCombinators.Parsec data SExpr = SymS String -- symbol | IntS Integer -- integer | BoolS Bool -- #t,#f(boolean) | StringS String --string | ListS [SExpr] deriving (Eq,Show) parseS :: String -> SExpr parseS input = case (parse sexpr
なぜ関数プログラミングは重要か
John Hughes, Institutionen för Datavetenskap, Chalmers Tekniska Högskola, 41296 Göteborg, SWEDEN. rjmh@cs.chalmers.se この日本語訳は原著者の承諾を得て山下がここに公開するものです。 この訳文についての、御指摘などは山下伸夫(nobsun .at. sampou.org)までおねがい いたします。 翻訳最終更新日 : 2011-09-17 原文 "Why Functional Programming Matters" 日本語訳PostScript この論文は1984年以来何年ものあいだChalmers大学のメモとして回覧された。 1989年と1990年に幾分か改訂をしたのが[Hug89]と [Hug90]である。この版はもとのChalmer大学のメモ のnroff原稿をもとに
Why learning Haskell/Python makes you a worse programmer « All Unkept
I've found, contrary to what you sometimes read, that learning Python and Haskell has not improved my programming using other languages. Haskell in particular, being so different from imperative languages, is supposed to give new insights into programming that will help you even when you are not using the language. My current experience doesn't exactly tally with this, and here is why: Demotivatio
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https://www.unixuser.org/~euske/doc/python/python-lisp-j.html
Effective Python
http://www.haskell.org/fv/Free_variable.html
AST Pretty Printer « Python recipes « ActiveState Code
arcanux.org
http://www.yellowhousehosting.com/resources/2007/10/01/can-your-personal-blog-hurt-your-career/
10 Things Every Programmer Should Know For Their First Job - AppleMatters
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Tab Completion Everywhere
http://www.nedbatchelder.com/blog/200610.html