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What is the explicit promise construction antipattern and how do I avoid it?
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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...
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
#> ...
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...
Can an enum class be converted to the underlying type?
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I think you can use std::underlying_type to know the underlying type, and then use cast:
#include <type_traits> //for std::underlying_type
typedef std::underlying_type<my_fields>::type utype;
utype a = static_cast<utype>(my_fields::field);
With th...
在 App Inventor 2 中使用图像 · App Inventor 2 中文网
...makes Android application development more complicated than before because now the application developer has to design their application to deal with different screen sizes and densities. The approach taken by Google is to design several UI versions for your application, complete with each version...
Html table tr inside td
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Well as of now, it doesn't throw any error when I put tr s in td, infact I've put many tr s inside some td s because my app renders arrays of objects within some properties, and it works across all browsers, (don't know about IE, as I d...
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.
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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...
Adding custom radio buttons in android
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</shape>
All the above 3 file code will be in drawable/ folder.
Now we also need Text Color Selector to change color of text accordingly.
radio_flat_text_selector.xml for text color selector
(Use color/ folder for this file.)
<?xml version="1.0" encoding="utf-8"?>
<selector xm...
CSS Progress Circle [closed]
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According to MDN clip is now deprecated.
– jstaab
Jun 19 '18 at 0:11
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