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How to debug Lock wait timeout exceeded on MySQL?
In my production error logs I occasionally see:
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Pandas percentage of total with groupby
This is obviously simple, but as a numpy newbe I'm getting stuck.
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Specifying column name in a “references” migration
I want to make a migration in Rails, referencing another table. Usually, I would do something like:
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C++, variable declaration in 'if' expression
What's going on here?
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How do you divide each element in a list by an int?
I just want to divide each element in a list by an int.
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Store a closure as a variable in Swift
In Objective-C, you can define a block's input and output, store one of those blocks that's passed in to a method, then use that block later:
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Is Zookeeper a must for Kafka?
In Kafka, I would like to use only a single broker, single topic and a single partition having one producer and multiple consumers (each consumer getting its own copy of data from the broker). Given this, I do not want the overhead of using Zookeeper; Can I not just use the broker only? Why is a Zoo...
How do you tell if a string contains another string in POSIX sh?
...t to write a Unix shell script that will do various logic if there is a string inside of another string. For example, if I am in a certain folder, branch off. Could someone please tell me how to accomplish this? If possible I would like to make this not shell specific (i.e. not bash only) but if the...
How to ignore a property in class if null, using json.net
I am using Json.NET to serialize a class to JSON.
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A type for Date only in C# - why is there no Date type?
In our C# project we have the need for representing a date without a time. I know of the existence of the DateTime, however, it incorporates a time of day as well. I want to make explicit that certain variables and method-arguments are date-based . Hence I can't use the DateTime.Date property
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