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ruby system command check exit code
I have a bunch of system calls in ruby such as the following and I want to check their exit codes simultaneously so that my script exits out if that command fails.
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Rails check if yield :area is defined in content_for
I want to do a conditional rendering at the layout level based on the actual template has defined content_for(:an__area) , any idea how to get this done?
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In Python, how do you convert seconds since epoch to a `datetime` object?
The time module can be initialized using seconds since epoch:
4 Answers
4
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How can I get the intersection, union, and subset of arrays in Ruby?
I want to create different methods for a class called Multiset .
3 Answers
3
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How do I revert master branch to a tag in git?
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You can do
git checkout master
git reset --hard tag_ABC
git push --force origin master
Please note that this will overwrite existing history in the upstream repo and may cause problems for other developers who have this repo...
How to replace a single word under cursor?
How do I replace a word under the cursor in Vim.
5 Answers
5
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Why are there two build.gradle files in an Android Studio project?
After having imported an Eclipse project into Android Studio, I see two build.gradle files:
2 Answers
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Postgresql query between date ranges
I am trying to query my postgresql db to return results where a date is in certain month and year. In other words I would like all the values for a month-year.
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How do I unset an element in an array in javascript?
How do I remove the key 'bar' from an array foo so that 'bar' won't show up in
6 Answers
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How to declare a friend assembly?
I have 2 projects in my solution:
3 Answers
3
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