简介：a discourse on programming

原站：http://www.weheartcode.com

“We Heart Code”的内容更新

累计：43 篇（自 2007-04-25 起）

更新：约9篇/年，最后更新761 天前

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Oracle Delete Taking a Long Time

it may look like your delete statement is hung, but ff your table has foreign keys in another table without indexes on that column oracle will full table scan that other table for every row that you’re deleting. hopefully this saves someone some time.bookmark to:<a class="social_img" onclick="window.open(this.href, '_blank', 'scrollbars=yes,menubar=no... (314 天前)

http://inezha.com/w/rkz7q3o

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Luhn Digit Generation Oracle PL/SQL Implementation

here's how to generate a luhn mod-10 check digit. it's implemented as a function in oracle pl/sql. i spent 2 hours looking for this online, then decided to implement it myself since it's not that hard. anyway, i thought i'd post it here for the next person trolling google for it. this is useful for generating credit card numbers or any other place you ne... (314 天前)

http://inezha.com/w/nj8f93p

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Capturing Uncaught Java Exceptions in a Bash Shell S

i was burned one to many times by chaining dependent java programs together in a bash script.by default the java executable will return zero if the program exited manually, and 1 if there was an uncaught runtimeexception.let's say test.sh runs a java program, we want to run it 3 times, but if it fails during any of the runs we want to abort our run.#!... (314 天前)

http://inezha.com/w/99hho3h

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Mylyn + Trac + wsgi

I am using mod_wsgi instead of mod_python for my trac .11 install.I’m also using the AccountManager plugin for authentication, and don’t have anonymous access setup.Anyway, authentication wasn’t working (through XML RPC) hence mylyn didn’t have the perms to do anything, and was silently defaulting to anon mode. even though I had the XML RPC plugin ... (314 天前)

http://inezha.com/w/bzzex39

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Easily Creating Fixed Length Flat Files With Groovy

Here's an (I think elegant) way to create flat files with Groovy.I want this script to be easy to read by future developers. So if someone wants to know what the format of the file is they can see it just by opening the script.Classes We'll UseGroovy:SQL: We'll use this library to access the database, it has some nice closure methods like eachRow whi... (314 天前)

http://inezha.com/w/ty82gn5

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Writing Portable Groovy Scripts with A Magic Runnabl

I've found myself using Java as a "scripting" language lately due to the necessity of working in mixed *nix and windows environments where I can't count on a standard scripting language being installed like python,perl, or ruby. What's more I either don't have the rights to install a binary of said scripting languages or don't want to go through the bure... (314 天前)

http://inezha.com/w/xlhsens

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Regular Expression to Replace System.out.println wit

This is nothing fancy, but may help some of you log4j newbies.I found myself replacing a project's hideous System.out.println statements with log4j log calls.Just do a File Search in eclipse , tick the regular expression box and do a Replace:Find: System\.out\.println\("(.+?)"\);Replace: log.info("\1");Now you just have to go in and add your imports... (314 天前)

http://inezha.com/w/y3zaqnc

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