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張 旭

What exactly was the point of [ "x$var" = "xval" ]? - Vidar's Blog - 0 views

www.vidarholen.net/...blog

shell programming code

shared by 張 旭 on 21 Apr 21 - No Cached
  • x-hack
  • test "x$arg" = "x-f"
  • the utility used a simple recursive descent parser without backtracking, which gave unary operators precedence over binary operators and ignored trailing arguments.
  • ...3 more annotations...
  • The x-hack is effective because no unary operators can start with x.
  • the x-hack could be used to work around certain bugs all the way up until 2015, seven years after StackOverflow wrote it off as an archaic relic of the past!
  • The Dash issue of [ "(" = ")" ] was originally reported in a form that affected both Bash 3.2.48 and Dash 0.5.4 in 2008. You can still see this on macOS bash today
  • 張 旭 on 21 Apr 21
     
    "x$var"
crazylion lee

Introducing debugger.html ★ Mozilla Hacks - the Web developer blog - 0 views

hacks.mozilla.org/...introducing-debugger-html

debugger javascript mozilla

shared by crazylion lee on 27 Nov 16 - No Cached
  • crazylion lee on 27 Nov 16
     
    "debugger.html is a modern JavaScript debugger from Mozilla, built as a web application with React and Redux. This project was started early this year in an effort to replace the current debugger within the Firefox Developer Tools. Also, we wanted to make a debugger capable of debugging multiple targets and functioning in a standalone mode."
crazylion lee

NetHack 3.6.0: NetHack Home Page - 0 views

www.nethack.org/index.html

net hack course

shared by crazylion lee on 30 Jan 17 - Cached
  • crazylion lee on 30 Jan 17
     
    " Congratulations adventurer! Your quest is at an end for you have reached the home of NetHack. Within, the Wizard of Yendor has no power, the Oracle speaks with utmost clarity, and the grid bugs do not bite. Click friend and enter."
crazylion lee

"Reverse Engineering for Beginners" free book - 0 views

beginners.re

reverse engineering engineering reverse hacking

shared by crazylion lee on 24 Apr 16 - No Cached
  • crazylion lee on 24 Apr 16
     
    "Also known as RE4B. Written by Dennis Yurichev "
張 旭

Best Practices · mperham/sidekiq Wiki - 0 views

github.com/...Best-Practices

rails ruby background job sidekiq programming

shared by 張 旭 on 08 Feb 17 - No Cached
  • Don't save state to Sidekiq, save simple identifiers.
  • Look up the objects once you actually need them in your perform method.
  • The Sidekiq client API uses JSON.dump to send the data to Redis
  • ...6 more annotations...
  • The Sidekiq server pulls that JSON data from Redis and uses JSON.load to convert the data back into Ruby types to pass to your perform method
  • Idempotency means that your job can safely execute multiple times
  • use a database transaction to ensure data changes are rolled back if there is an error
  • Sidekiq will execute your job at least once.
  • Sidekiq is designed for parallel execution so design your jobs so you can run lots of them in parallel
  • Sidekiq will not provide features which hack around a lack of concurrency in your jobs.
張 旭

七个你无法忽视的Git使用技巧| 编程派 | Coding Python - 0 views

codingpy.com/...t-hacks-you-just-cannot-ignore

git development version

shared by 張 旭 on 27 Nov 15 - No Cached
  • 撤销最近一次代码提交
  • $ git reset --soft HEAD~1 # 对工作文件进行必要的更改 $ git add -A . $ git commit -c ORIG_HEAD
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