New Feature of JUnit: Theories
A couple of months ago I blogged about JUnit Rules, one of the new features in JUnit. While fooling around with JUnit Rules, I found a couple more features that you might be interested in. So here it comes: Theories! It turns out Theories are really a piece of cake. Try this: import static org.junit.Assume.assumeTrue; import org.junit.experimental.theories.DataPoint; import org.junit.experimental.
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IVS 2011 Springã®ã‚·ãƒªã‚³ãƒ³ãƒãƒ¬ãƒ¼ãƒ‘ãƒãƒ«ã§ç™ºè¡¨ã—ãŸã®ã¯ã€Œdomoã€ã‚¢ãƒ—リをãƒãƒ¼ãƒ³ãƒã—ãŸLaunch Conferenceã§ã®ãƒ—レゼンã®æ¨¡æ§˜ã‚’録画ã—ãŸãƒ“デオã§ã—ãŸã€‚ Domo: The one Launch presentation you must watch (video) | VentureBeat ãŸã£ãŸï¼”分ã®ãƒ—レゼンテーションã¨ã¯è¨€ãˆã€éƒ½åˆä¸‰å›žã«ã‚ãŸã£ã¦æ›¸ãç›´ã—ãŸã‚¹ã‚¯ãƒªãƒ—ト。200回以上トレーニングã—ã¦æœ¬å½“ã«é‚ã‚’è¾¼ã‚ãŸãƒ”ッãƒã§ã—ãŸã€‚ パãƒãƒ«ãƒ‡ã‚£ãƒƒã‚«ãƒƒã‚·ãƒ§ãƒ³ã§ã¯ä½™ã‚Šè©³ã—ã触れる事ãŒå‡ºæ¥ãªã‹ã£ãŸã®ã§ã€ã“ã®Version 4（ã“ã“ã«è‡³ã‚‹ã¾ã§ã¯æœ¬å½“ã«å¤§å¤‰ã§ã—ãŸï¼‰ã®ãƒ—レゼンスクリプトã«ä»•è¾¼ã‚“ã メカニズムを説明ã—ã¦ã¿ã‚ˆã†ã¨æ€ã„ã¾ã™ã€‚ 一見ã¶ã£ã¤ã‘本番ã®æ§˜ã«è¦‹ãˆã‚‹ãƒ—レゼンãªã®ã§ã™ãŒã€æ¡ˆå¤–（笑）ã—ã£ã‹ã‚Šã¨æ™‚間を掛ã‘ã¦ãƒ—レゼンテーションã®åŠ¹æžœã‚’最大化ã™ã‚‹ãŸã‚ã®å·¥å¤«ã‚’盛り込んã§ã„ã¾ã™ï¼ˆç››ã‚Š
Valgrind | Helgrind: a thread error detector
To use this tool, you must specify --tool=helgrind on the Valgrind command line. Helgrind is a Valgrind tool for detecting synchronisation errors in C, C++ and Fortran programs that use the POSIX pthreads threading primitives. The main abstractions in POSIX pthreads are: a set of threads sharing a common address space, thread creation, thread joining, thread exit, mutexes (locks), condition variab
D.3. tcpdump: Capturing with “tcpdump†for viewing with Wireshark
It’s often more useful to capture packets using tcpdump rather than wireshark. For example, you might want to do a remote capture and either don’t have GUI access or don’t have Wireshark installed on the remote machine. Older versions of tcpdump truncate packets to 68 or 96 bytes. If this is the case, use -s to capture full-sized packets: $ tcpdump -i <interface> -s 65535 -w <file> You will have t
How to use tcpdump on "Very" Busy Hosts
Tcpdump Packet Loss on Busy ServersOften I run into problems when trying to use mk-query-digest with tcpdump on “very†busy hosts. You might be thinking, “very busy is a relative and unquantifiable term,†and you’d be right, so I’ll phrase this differently. Let me give a little background to the problem first. Mk-query-digest tries to handle dropped or missing packets gracefully, but even so they
Using tcpflow
Using tcpflowby Graeme Mathieson on March 6, 2011 · 4 comments Sometimes, when you’re writing applications that use a library to talk over the wire to a remote service, it’s difficult to see how the high level API the library exposes translates into the on-the-wire protocol. Funnily enough, I was having that very problem yesterday, so I dug tcpflow out my toolbox to better understand what was happ
GitHub - cloudera/haatkit: Toolkit of simple scripts useful for managing Hadoop
haatkit haatkit is a toolkit of simple scripts that are useful when working with a Hadoop cluster, or probably any system primarily made up of a lot of different Java processes. It was inspired by (but shares no code with) the maatkit suite of tools for working with MySQL. To be included in haatkit, a tool should be: no more than a few hundred lines of python or bash require no dependencies that a
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Debugging Mozilla with Helgrind - Mozilla | MDN
GitHub - hierynomus/sshj: ssh, scp and sftp for java
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