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<Rich_Morin>
I'd like to start up a Unix process and communicate with it interactively via its STDIN and STDOUT. Suggestions?
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<raynold>
hehe
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<jidar>
sounds like a use for a unix socket
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<mikhael_k33hl>
I have a class that depends on the 'sqlite3' gem. Upon instantiation, it creates or opens a connection to the database, how do I make sure that that connection is closed though after it gets destroyed?
<mikhael_k33hl>
Should I create an instance variable for the db connection or should I open the connection for everytime it needs to do some transaction?
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<mikhael_k33hl>
Anyone using sqlite3? I seem to need to always open a connection even if I have stored a db object on an instance variable
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<akkad>
nobody. use leveldb heh
<mikhael_k33hl>
akkad: can't, working on an existing code
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<akkad>
always on connection?
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<akkad>
sqlite3 is just a file based db
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<mikhael_k33hl>
I always see this SQLite3::Database.open on blogs but I can't seem to find it in ruby-docs though
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<mikhael_k33hl>
is there an assertion in minitest that tests a hash contains a certain element?
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<pwnd_nsfw>
mikhael_k33hl, I don't use minitest much, but in rspec you can just take boolean functions and use them in your tests.. Like if you have a function in your model called "cool?" in rspec you can use be_cool
<pwnd_nsfw>
Does minitest do things like that?
<mikhael_k33hl>
pwnd_nsfw: pretty new to minitest, haven't stumbled upon something like that though
<pwnd_nsfw>
mikhael_k33hl, also are you seeing if a key returns an element?
<pwnd_nsfw>
or, regardless of key, if it contains a value?
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<pwnd_nsfw>
assert your_hash.has_key?("the key") or assert your_hash.has_value("your value")
<pwnd_nsfw>
Any errors that don't have application specific data in them, you can just google them
<mikhael_k33hl>
pwnd_nsfw: Yeah, it really doesn't answer the question as the only answer was pertaining to closing the statement hehe
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<pwnd_nsfw>
mikhael_k33hl, apparently you don't have to worry about it
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<pwnd_nsfw>
mikhael_k33hl, I'm still looking though because I didn't like the answer
<mikhael_k33hl>
pwnd_nsfw: yeah, me too, I want to find somewhere that tells me/confirms we don't need to close it hehe
<pwnd_nsfw>
mikhael_k33hl, make sure you call finalize on your prepared statements
<pwnd_nsfw>
"When you create statements with Database#prepare(), you have to call .finalize() on them; otherwise, sqlite will keep them around infinitely and won't allow closing the database."
<pwnd_nsfw>
That answer actually came from someone using node
<pwnd_nsfw>
not finding finalize for statements in the docs, lemme look further
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<pwnd_nsfw>
mikhael_k33hl, try calling close on the result set you get from execute?
<mikhael_k33hl>
pwnd_nsfw: yep, scouring through the ruby-docs for finalize method
<mikhael_k33hl>
pwnd_nsfw: didin't find a close method for Statements, butu I tried it and it seems to work, leaving me the feeling of "why is it working?" nyahahaha
<pwnd_nsfw>
the method is in resultset
<pwnd_nsfw>
which closes the statement that produced the ResultSet
* pwnd_nsfw
shrugs
<pwnd_nsfw>
No more error though?
<mikhael_k33hl>
pwnd_nsfw: yeah, thanks for that, but the object is a statement object though so why call a method for resultset
<mikhael_k33hl>
hehe
<pwnd_nsfw>
Because the ResultSet is the reason you can't close it
<mikhael_k33hl>
pwnd_nsfw: so I have this statement pst = DB_CONNECTION.prepare "SELECT * FROM mirror";assert_equal(required_database_columns, pst.columns);pst.close
<mikhael_k33hl>
pwnd_nsfw: I tried pringting pst via 'p pst' and it outputs <SQLite3::Statement:0x0000000001cc2f08 . . . which indicates it is a Statement object right?
<pwnd_nsfw>
right
<pwnd_nsfw>
You have to call execute on it for it to do anything
<pwnd_nsfw>
but... that worked?
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<mikhael_k33hl>
pwnd_nsfw: yep, no more warnings of the like hehe
<pwnd_nsfw>
Weird
<mikhael_k33hl>
pwnd_nsfw: The ResultSet object encapsulates the enumerability of a query's output. It is a simple cursor over the data that the query returns. It will very rarely (if ever) be instantiated directly. Instead, clients should obtain a ResultSet instance via Statement#execute.
<mikhael_k33hl>
pwnd_nsfw: #close ⇒ Object Closes the statement that spawned this result set.
<mikhael_k33hl>
pwnd_nsfw: Though I find it confusing how I was able to invoke the method via pst.close when pst is a Statement object :D
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<pwnd_nsfw>
mikhael_k33hl, right? That is weird. call "methods" on the statement and see if close is in there "for the lulz"
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<mikhael_k33hl>
pwnd_nsfw: it doesn't
<pwnd_nsfw>
Super weird, ...
<pwnd_nsfw>
mikhael_k33hl, it's the same code you sent me earlier, aside from the one close line, right?
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<mikhael_k33hl>
pwnd_nsfw: yep
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<repys>
hi how can I install ruby last version in my debian 8?
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<Veejay>
Hello, is there a canonical to have nice output when you're doing some work in different threads and they all use some variant of print/puts/etc.?
<Veejay>
I usually get "jagged" output (newlines not taken into account)
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<marahin>
Veejay I WOULD have a thread that has a log stack that other threads push their log messages to.
<marahin>
And then one by one just print those messages.
<Veejay>
Do I have to push the messages coming from the threads into a queue?
<marahin>
But then, I'm just having too much fun with golang lately :)
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<Veejay>
OK, so that's the general idea, the different threads would send their output to some shared data structure that another thread would consume?
<Veejay>
I'll look into that, thanks
<marahin>
I think that's the easiest and the safest one
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<havenwood>
Veejay: If you add an explicit newline to the String, it'll stay with the rest of the String.
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<havenwood>
Veejay: The one #puts implicitly adds gets off kilter.
<havenwood>
Veejay: `puts "coffee\n"` instead of `puts "coffee"`
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<TheRock2>
Hi guys. My ruby code does not work, where is the error? I put this in a .rb file to ping a host: auto f = [](){ return Net::Ping::External.new(host).ping; };
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<havenwood>
TheRock2: That doesn't make much sense in isolation. Gist the whole file?
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<TheRock2>
I wrote the code in c++ and want to execute it in ruby