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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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Python: Is it bad form to raise exceptions within __init__?
Is it considered bad form to raise exceptions within __init__ ? If so, then what is the accepted method of throwing an error when certain class variables are initialized as None or of an incorrect type?
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What makes JNI calls slow?
I know that 'crossing boundaries' when making a JNI call in Java is slow.
3 Answers
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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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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
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How do I revert master branch to a tag in git?
We have branches origin and develop.
The initial state of master was tagged at tag_ABC .
2 Answers
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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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'any' vs 'Object'
I am looking at TypeScript code and noticed that they use:
6 Answers
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Using NSPredicate to filter an NSArray based on NSDictionary keys
I have an array of dictionaries.
6 Answers
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