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How to find out where a function is defined?
...@EHerman I don't think you can find callers of a function with reflection. If you could it probably wouldn't work well for this because PHP files tend to be included on demand, and so you would likely not have all the code loaded which does call the function.
– Tom Haigh
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psql: FATAL: role “postgres” does not exist
...s
launchctl load ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
Now, it is set up, login using psql -U postgres -h localhost or use PgAdmin for GUI.
By default user postgres will not have any login password.
Check this site for more articles like this: https://medium.com/@Nithanaroy/ins...
Using the rJava package on Win7 64 bit with R
...A_HOME, so consider that. I have not revisited this issue recently to know if all the steps below are still necessary.)
Here is some quick advice on how to get up and running with R + rJava on Windows 7 64bit. There are several possibilities, but most have fatal flaws. Here is what worked for me:
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How to uninstall a Windows Service when there is no executable for it left on the system?
...rvice via Registry
Its very easy to remove a service from registry if you know the right path. Here is how I did that:
Run Regedit or Regedt32
Go to the registry entry "HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services"
Look for the service that you want delete and delete it. You can look at t...
Ruby on Rails - Import Data from a CSV file
...find what object returns CSV.parse(), I didn't find to_hash() and with_indifferent_access() methods... Maybe I looked in wrong place or missed some basic principle on how to traverse Ruby & Rails API docs. Can anyone share the best practice how to read Ruby API docs?
– V...
How to iterate a loop with index and element in Swift
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Yes. As of Swift 3.0, if you need the index for each element along with its value, you can use the enumerated() method to iterate over the array. It returns a sequence of pairs composed of the index and the value for each item in the arra...
What is “entropy and information gain”?
...er of a new unseen first-name.
name gender
----------------- Now we want to predict
Ashley f the gender of "Amro" (my name)
Brian m
Caroline f
David m
First step is deciding what features of the data are relevant to the target class we want t...
get size of json object
... with the .length because it keeps returning undefined . Just wondering if I'm using it right:
8 Answers
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How do I rename the extension for a bunch of files?
...is does not work for filenames with spaces in them without proper quoting (now added above). When working purely on your own files that you know do not have spaces in the filenames this will work but whenever you write something that may be reused at a later time, do not skip proper quoting.
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How to post data in PHP using file_get_contents?
...Thanks. I am guessing I can insert the contents from $_POST into $postdata if I need to pass same POST params to the requested page?
– Paras Chopra
Mar 15 '10 at 6:49
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