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Python recursive folder read
...covering Python (been writing it for about an hour).
I am writing a script to recursively read the contents of text files in a folder structure.
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Eclipse error: indirectly referenced from required .class files?
...hat is not on the classpath." You should make sure (as Harry Joy suggests) to add the required jar to the classpath.
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How to form tuple column from two columns in Pandas
I've got a Pandas DataFrame and I want to combine the 'lat' and 'long' columns to form a tuple.
4 Answers
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nil detection in Go
I see a lot of code in Go to detect nil, like this:
6 Answers
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“simple” vs “current” push.default in git for decentralized workflow
... with the same name exists on the remote):
$ git checkout -b foo
Switched to a new branch 'foo'
$ git config push.default simple
$ git push
fatal: The current branch foo has no upstream branch.
To push the current branch and set the remote as upstream, use
git push --set-upstream origin foo
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Fully custom validation error message with Rails
Using Rails I'm trying to get an error message like "The song field can't be empty" on save. Doing the following:
17 Answer...
How do I check whether a file exists without exceptions?
...king is so you can do something like if file_exists: open_it(), it's safer to use a try around the attempt to open it. Checking and then opening risks the file being deleted or moved or something between when you check and when you try to open it.
If you're not planning to open the file immediately...
INSTALL_FAILED_UPDATE_INCOMPATIBLE when I try to install compiled .apk on device
I've compiled Trebuchet launcher from CyanogenMod 9, and trying to install it with adb:
29 Answers
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JavaScript variables declare outside or inside loop?
...on body(*), then all use of that identifier in the block will be referring to the local variable. It makes no difference whether value is declared to be var inside the loop, outside the loop, or both.
Consequently you should write whichever you find most readable. I disagree with Crockford that put...
SharedPreferences.onSharedPreferenceChangeListener not being called consistently
... eventually, will get garbage collected, removed from the WeakHashMap and stop working.
Keep a reference to the listener in a field of your class and you will be OK, provided your class instance is not destroyed.
i.e. instead of:
prefs.registerOnSharedPreferenceChangeListener(
new SharedPrefere...