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What does send() do in Ruby?
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send sends a message to an object instance and its ancestors in class hierarchy until some method reacts (because its name matches the first argument).
Practically speaking, those lines are equivalent:
1.send '+', 2
1.+(2)
1 + 2
Note that send bypasses visibility ...
Meaning of epsilon argument of assertEquals for double values
... The documentation says, "delta - the maximum delta between expected and actual for which both numbers are still considered equal." So I think that should be a <= not <.
– Andrew Cheong
Apr 16 '18 at 17:00
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What is the correct MIME type to use for an RSS feed?
Is one MIME type preferable to ensure compatibility with RSS readers and other scrapers?
7 Answers
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How to log something in Rails in an independent log file?
In rails I want to log some information in a different log file and not the standard development.log or production.log. I want to do this logging from a model class.
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How can I run an external command asynchronously from Python?
I need to run a shell command asynchronously from a Python script. By this I mean that I want my Python script to continue running while the external command goes off and does whatever it needs to do.
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What is the correct syntax of ng-include?
... I agree, we definitely need a documentation effort on Angular, and a layout system.
– Gepsens
Feb 25 '13 at 21:40
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Reactive Extensions bug on Windows Phone
...;(type);
You are missing the type declaration. The compiler is guessing (and guessing wrong). Strictly type everything and it should run.
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PHPExcel auto size column width
I'm trying to auto size the columns of my sheet.
I'm writing the file and in the end I try to resize all of my columns.
16...
How do I replace a git submodule with another repo?
...it/config
Run git rm --cached path_to_submodule (no trailing slash)
Commit and delete the now untracked submodule files
Now, add the new submodule with the --name flag. This will give git an alternate name to reference in .git/config for the submodule, to deconflict with the submodule that was th...
Dealing with multiple Python versions and PIP?
...This is the recommendation because it works across all versions of Python, and in all forms of virtualenv. For example:
# The system default python:
$ python -m pip install fish
# A virtualenv's python:
$ .env/bin/python -m pip install fish
# A specific version of python:
$ python-3.6 -m pip inst...