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Why does Math.round(0.49999999999999994) return 1?
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Summary
In Java 6 (and presumably earlier), round(x) is implemented as floor(x+0.5).1 This is a specification bug, for precisely this one pathological case.2 Java 7 no longer mandates this broken implementation.3
The problem
0.5+0.49999999...
What is cURL in PHP?
... lets you make HTTP requests in PHP. Everything you need to know about it (and most other extensions) can be found in the PHP manual.
In order to use PHP's cURL functions
you need to install the » libcurl
package. PHP requires that you use
libcurl 7.0.2-beta or higher. In PHP
4.2.3, you...
What is the difference between children and childNodes in JavaScript?
I have found myself using JavaScript and I ran across childNodes and children properties. I am wondering what the difference between them is. Also is one preferred to the other?
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Android - Dynamically Add Views into View
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Use the LayoutInflater to create a view based on your layout template, and then inject it into the view where you need it.
LayoutInflater vi = (LayoutInflater) getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = vi.inflate(R.layout.your_layout, null);
// fill in...
Convert Go map to json
...; it is forbidden. Instead, you can convert these values to strings beforehand, for instance using strconv.Itoa.
See this post for more details: https://stackoverflow.com/a/24284721/2679935
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Adding a regression line on a ggplot
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In general, to provide your own formula you should use arguments x and y that will correspond to values you provided in ggplot() - in this case x will be interpreted as x.plot and y as y.plot. More information about smoothing methods and formula you can find in help page of function stat_smo...
Returning JSON from PHP to JavaScript?
...rialising function.
json_encode
json_encode
Please use that if you can and don't suffer Not Invented Here syndrome.
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Overloading member access operators ->, .*
I understand most operator overloading, with the exception of the member access operators -> , .* , ->* etc.
5 An...
Plotting time in Python with Matplotlib
I have an array of timestamps in the format (HH:MM:SS.mmmmmm) and another array of floating point numbers, each corresponding to a value in the timestamp array.
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How can I reliably get an object's address when operator& is overloaded?
...(); is declared, then func is a reference to a function taking no argument and returning no result. This reference to a function can be trivially converted into a pointer to function -- from @Konstantin: According to 13.3.3.2 both T & and T * are indistinguishable for functions. The 1st one is a...