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What's the difference between `1L` and `1`?
I often seen the symbol 1L (or 2L , 3L , etc) appear in R code. Whats the difference between 1L and 1 ? 1==1L evaluates to TRUE . Why is 1L used in R code?
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Getting “unixtime” in Java
Date.getTime() returns milliseconds since Jan 1, 1970. Unixtime is seconds since Jan 1, 1970. I don't usually code in java, but I'm working on some bug fixes. I have:
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Are static fields inherited?
When static members are inherited, are they static for the entire hierarchy, or just that class, i.e.:
7 Answers
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MongoDB inserts float when trying to insert integer
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composer: How to find the exact version of a package?
...'m writing a library A, that depends on another library, monolog for instance.
5 Answers
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Excluding files/directories from Gulp task
I have a gulp rjs task that concatenates and uglifies all my custom .JS files (any non vendor libraries).
2 Answers
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How to save a data.frame in R?
...g, but it takes quite some time to build. I would to save it as a file, which I can than again open in R?
3 Answers
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Limits of Nat type in Shapeless
In shapeless, the Nat type represents a way to encode natural numbers at a type level. This is used for example for fixed size lists. You can even do calculations on type level, e.g. append a list of N elements to a list of K elements and get back a list that is known at compile time to have N+...
How is Generic Covariance & Contra-variance Implemented in C# 4.0?
I didn't attend PDC 2008, but I heard some news that C# 4.0 is announced to support Generic covariance and contra-variance. That is, List<string> can be assigned to List<object> . How could that be?
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