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How do RVM and rbenv actually work?
...d. Every Bash command that rbenv runs will be written to your terminal.
Now, rbenv is just concerned with switching versions, but a thriving ecosystem of plugins will help you do everything from installing Ruby to setting up your environment, managing "gemsets" and even automating bundle exec.
I...
What's the point of having pointers in Go?
I know that pointers in Go allow mutation of a function's arguments, but wouldn't it have been simpler if they adopted just references (with appropriate const or mutable qualifiers). Now we have pointers and for some built-in types like maps and channels implicit pass by reference.
...
How to use git bisect?
...ment history:
... --- 0 --- 1 --- 2 --- 3 --- 4* --- 5 --- current
You know that your program is not working properly at the current revision, and that it was working at the revision 0. So the regression was likely introduced in one of the commits 1, 2, 3, 4, 5, current.
You could try to check o...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
... 0
# Turn group2 into a factor
iris$group2 = factor(iris$group2)
# Now all possible combinations of Species and group2 are included in the output,
# whether present in the data or not
iris %>% group_by(Species, group2, .drop=FALSE) %>% tally
#> Species group2 n
#> ...
What is Virtual DOM?
... will be created which actually does not do any changes in the actual DOM. Now with this virtual DOM, you will be checking the difference between this and your current DOM. And only the part which is different (in this case the new <div>) will be added instead of re-rendering the whole DOM.
...
What is the explicit promise construction antipattern and how do I avoid it?
...
The deferred antipattern (now explicit-construction anti-pattern) coined by Esailija is a common anti-pattern people who are new to promises make, I've made it myself when I first used promises. The problem with the above code is that is fails to util...
How do you detect Credit card type based on number?
...to detect the type of credit card based purely on its number. Does anyone know of a definitive, reliable way to find this?
...
How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
...atforms, do not include the weights even if it provides better results.
Now, if you can use scipy, you could use scipy.optimize.curve_fit to fit any model without transformations.
For y = A + B log x the result is the same as the transformation method:
>>> x = numpy.array([1, 7, 20, 50...
Load and execution sequence of a web page?
...oo much about the load and execution sequence of an ordinary web page. But now I need to know detail. It's hard to find answers from Google or SO, so I created this question.
...
How to create a density plot in matplotlib?
...ed answer. See below on Seaborn solution, which is more standard in Python now.
– LudvigH
May 24 '19 at 12:21
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