How can I get the first character in a string using Ruby? 13 Answers 13 ...

...t @Muis describes is an exponentially weighted moving averge, which is sometimes appropriate but is not precisely what the OP requested. As an example, consider the behaviour you expect when most of the points are in the range 2 to 4 but one value is upwards of a million. An EWMA (here) will hold ...

...nterpreting whatever numbers you get is extremely low. (Pretty much every time I look at memory usage numbers with other engineers, there is always a long discussion about what they actually mean that only results in a vague conclusion.) Note: we now have much more extensive documentation on Manag...

...on the order of 10 or fewer), select can beat epoll in memory usage and runtime speed. Of course, for such small numbers of sockets, both mechanisms are so fast that you don't really care about this difference in the vast majority of cases. One clarification, though. Both select and epoll scale l...

I was looking to be able to turn any UIColor into a gradient. The way I am intending to do this is by using Core Graphics to draw a gradient. What I am trying to do is to get a color, lets say: ...

... Use boolean rather than Boolean every time you can. This will avoid many NullPointerExceptions and make your code more robust. Boolean is useful, for example to store booleans in a collection (List, Map, etc.) to represent a nullable boolean (coming from a nul...

...a how it started. My suspicion is running multiple virtualenvs at the same time). If none of this works, a temporary solution may be to, as Joe Holloway said, Just run the virtualenv's pip with its full path (i.e. don't rely on searching the executable path) and you don't even need to activate ...

I have this struct : 8 Answers 8 ...

Is there a way to remove everything after a certain character or just choose everything up to that character? I'm getting the value from an href and up to the "?", and it's always going to be a different amount of characters. ...

... Every time I go from heavy C++ coding to Java, it takes me a little while to adapt to the lack of const-correctness in Java. This usage of const in C++ is much different than just declaring constant variables, if you didn't know. ...