4 ms·

Ruby Tricks

74 points by franzunix 11y ago

code_sterling 11y ago
A brief explanation of what some of these are doing, or moreover, a use case for why I would want to use them would be handy.
- franzunix 11y ago
  Indeed! Will do it later! I just started this! Thanks for the feedback!
- sdegutis 11y ago
  Only looked at "Fetch Data" and "Bubbling up thread errors" so far, but they were self-explanatory. I'm betting most of them are like this.
  - franzunix 11y ago
    Yeah..Some of them are self-explanatory, it makes me to think that the comments/description may not be necessary. But, a simple comment it's not a problem...Let's see. =)
  - galactus 11y ago
    associative arrays could use an example illustrating when/why to use them
buzzdenver 11y ago
Sent a PR with a couple of fixes.
- franzunix 11y ago
  thanks, man!
fphilipe 11y ago
One very obscure trick in ruby is the flip-flop operator. Never used it and I probably never will. There's an open issue to get rid of it[1]. Has anyone ever had a real use case for it? [1]: https://bugs.ruby-lang.org/issues/5400 https://bugs.ruby-lang.org/issues/5400
- mwpmaybe 11y ago
  You've never wanted a range of lines out of a file? It's a common Perl idiom.
  - lectrick 11y ago
    It looks like this is not being treated as a range operator, but a flip-flop operator I've never heard of
    - mwpmaybe 11y ago
      That's the name of the operator, sure. One of the use cases of the flip-flop operator is selecting a range of lines in a file.
stewbrew 11y ago
I was hoping for something like "static code analysis" and "make code more robust", not for "magic" and "even more magic".
- zeendo 11y ago
  $VERBOSE is mentioned for warnings. That's pretty handy.
  - franzunix 11y ago
    I also like $DEBUG! =) if $DEBUG p "var is %p" % var end
- lectrick 11y ago
  You probably want http://elixir-lang.org http://elixir-lang.org that way ==>
goofed 11y ago
Awesome initiative! Already sent my PR :)
- franzunix 11y ago
  thanks, goofed
sivers 11y ago
Thanks for sharing this. Love this format. Learned about PStore, cycle, take, fetch, securerandom, and more. May add to it. Tweeted: https://twitter.com/sivers/status/660875966466514944 https://twitter.com/sivers/status/660875966466514944
- franzunix 11y ago
  thanks!

74 points by franzunix 11y ago

A brief explanation of what some of these are doing, or moreover, a use case for why I would want to use them would be handy.

franzunix 11y ago
Indeed! Will do it later! I just started this! Thanks for the feedback!
sdegutis 11y ago
Only looked at "Fetch Data" and "Bubbling up thread errors" so far, but they were self-explanatory. I'm betting most of them are like this.
- franzunix 11y ago
  Yeah..Some of them are self-explanatory, it makes me to think that the comments/description may not be necessary. But, a simple comment it's not a problem...Let's see. =)
- galactus 11y ago
  associative arrays could use an example illustrating when/why to use them

buzzdenver 11y ago

Sent a PR with a couple of fixes.

franzunix 11y ago
thanks, man!

fphilipe 11y ago

One very obscure trick in ruby is the flip-flop operator. Never used it and I probably never will. There's an open issue to get rid of it[1]. Has anyone ever had a real use case for it? [1]: https://bugs.ruby-lang.org/issues/5400 https://bugs.ruby-lang.org/issues/5400

mwpmaybe 11y ago
You've never wanted a range of lines out of a file? It's a common Perl idiom.
- lectrick 11y ago
  It looks like this is not being treated as a range operator, but a flip-flop operator I've never heard of
  - mwpmaybe 11y ago
    That's the name of the operator, sure. One of the use cases of the flip-flop operator is selecting a range of lines in a file.

stewbrew 11y ago

I was hoping for something like "static code analysis" and "make code more robust", not for "magic" and "even more magic".

zeendo 11y ago
$VERBOSE is mentioned for warnings. That's pretty handy.
- franzunix 11y ago
  I also like $DEBUG! =) if $DEBUG p "var is %p" % var end
lectrick 11y ago
You probably want http://elixir-lang.org http://elixir-lang.org that way ==>

goofed 11y ago

Awesome initiative! Already sent my PR :)

franzunix 11y ago
thanks, goofed

sivers 11y ago

Thanks for sharing this. Love this format. Learned about PStore, cycle, take, fetch, securerandom, and more. May add to it. Tweeted: https://twitter.com/sivers/status/660875966466514944 https://twitter.com/sivers/status/660875966466514944

franzunix 11y ago
thanks!