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How to check if a specified key exists in a given S3 bucket using Java
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Use the jets3t library. Its a lot more easier and robust than the AWS sdk. Using this library you can call, s3service.getObjectDetails(). This will check and retrieve only the details of the object (not the contents) of the object. It will throw a 404 if the object is mi...
How and why do I set up a C# build machine? [closed]
...ct. I've proposed setting up a build machine which will do nightly builds and tests of the project, because I understand that this is a Good Thing. Trouble is, we don't have a whole lot of budget here, so I have to justify the expense to the powers that be. So I want to know:
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SQL Joins Vs SQL Subqueries (Performance)?
...PECT the first query to be quicker, mainly because you have an equivalence and an explicit JOIN. In my experience IN is a very slow operator, since SQL normally evaluates it as a series of WHERE clauses separated by "OR" (WHERE x=Y OR x=Z OR...).
As with ALL THINGS SQL though, your mileage may va...
Making heatmap from pandas DataFrame
I have a dataframe generated from Python's Pandas package. How can I generate heatmap using DataFrame from pandas package.
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What's the best way to put a c-struct in an NSArray?
... to store c-structures in an NSArray ? Advantages, disadvantages, memory handling?
11 Answers
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How can I parse JSON with C#?
...o JSON
The JsonSerializer for quickly converting your .NET objects to JSON and back again
Json.NET can optionally produce well formatted, indented JSON for debugging or display
Attributes like JsonIgnore and JsonProperty can be added to a class to customize how a class is serialized
Ability to conve...
How to determine if object is in array [duplicate]
... }
}
return false;
}
In this case, containsObject(car4, carBrands) is true. Remove the carBrands.push(car4); call and it will return false instead. If you later expand to using objects to store these other car objects instead of using arrays, you could use something like this instead...
Sleep until a specific time/date
I want my bash script to sleep until a specific time. So, I want a command like "sleep" which takes no interval but an end time and sleeps until then.
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Quick search on filename
How can I quick search a class file or entire resource file in android studio?
5 Answers
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Check if at least two out of three booleans are true
...ewer recently asked me this question: given three boolean variables, a, b, and c, return true if at least two out of the three are true.
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