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Appending a line to a file only if it does not already exist
I need to add the following line to the end of a config file:
10 Answers
10
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How to avoid reinstalling packages when building Docker image for Python projects?
My Dockerfile is something like
4 Answers
4
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Is there a Python caching library?
I'm looking for a Python caching library but can't find anything so far. I need a simple dict -like interface where I can set keys and their expiration and get them back cached. Sort of something like:
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What is tail recursion?
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Consider a simple function that adds the first N natural numbers. (e.g. sum(5) = 1 + 2 + 3 + 4 + 5 = 15).
Here is a simple JavaScript implementation that uses recursion:
function recsum(x) {
if (x === 1) {
return x;
} else {
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c++11 Return value optimization or move? [duplicate]
...en I should use std::move and when I should let the compiler optimize... for example:
4 Answers
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How to get git diff with full context?
How to create patch suitable for reviewing in crucible?
6 Answers
6
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Should I implement __ne__ in terms of __eq__ in Python?
...__ method as well, but does it make sense to implement __ne__ in terms of __eq__ as such?
5 Answers
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What's the simplest way to list conflicted files in Git?
I just need a plain list of conflicted files.
18 Answers
18
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Can you get DB username, pw, database name in Rails?
I'm writing a rake task that does some DB work outside of Rails/ActiveRecord.
5 Answers
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convert ArrayList to JSONArray
I have an ArrayList that I use within an ArrayAdapter for a ListView. I need to take the items in the list and convert them to a JSONArray to send to an API. I've searched around, but haven't found anything that explains how this might work, any help would be appreciated.
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