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How to delete a specific line in a file?
... full of nicknames. How can I delete a specific nickname from this file, using Python?
17 Answers
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Can Rails Routing Helpers (i.e. mymodel_path(model)) be Used in Models?
Say I have a Rails Model called Thing. Thing has a url attribute that can optionally be set to a URL somewhere on the Internet. In view code, I need logic that does the following:
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Removing multiple keys from a dictionary safely
...dict = {'b': 'foo'}
def entries_to_remove(entries, the_dict):
for key in entries:
if key in the_dict:
del the_dict[key]
A more compact version was provided by mattbornski using dict.pop()
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How to find and turn on USB debugging mode on Nexus 4
In settings on my Nexus 4 device there isn't any "USB debugging options" item. How do I find and turn on USB debugging mode on Nexus 4?
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Convert a byte array to integer in Java and vice versa
I want to store some data into byte arrays in Java. Basically just numbers which can take up to 2 Bytes per number.
8 Answe...
Android java.lang.VerifyError?
In my Android app, I always get VerifyErrors! And I cannot figure out why. Whenever I include a external JAR, I always get VerifyErrors when I try to launch my app (except for once, when I included Apache Log4j.)
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Progress indicator during pandas operations
I regularly perform pandas operations on data frames in excess of 15 million or so rows and I'd love to have access to a progress indicator for particular operations.
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How to change a nullable column to not nullable in a Rails migration?
I created a date column in a previous migration and set it to be nullable. Now I want to change it to be not nullable. How do I go about doing this assuming there are null rows in that database? I'm ok with setting those columns to Time.now if they're currently null.
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How to calculate “time ago” in Java?
In Ruby on Rails, there is a feature that allows you to take any Date and print out how "long ago" it was.
30 Answers
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XSD - how to allow elements in any order any number of times?
I am trying to create an XSD, and trying to write the definition with the following requirement:
6 Answers
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