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Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b') [duplicate]
... return the result of the comparison x == ToNumber(y).
When booleans are converted to numbers, the following conversion takes place:
Boolean: The result is 1 if the argument is true. The result is +0 if the argument is false.
Now we have
'0' == 1
which matches the condition in step 5:
...
Calculating the difference between two Java date instances
...ong diffInMillies = date2.getTime() - date1.getTime();
return timeUnit.convert(diffInMillies,TimeUnit.MILLISECONDS);
}
And then can you call:
getDateDiff(date1,date2,TimeUnit.MINUTES);
to get the diff of the 2 dates in minutes unit.
TimeUnit is java.util.concurrent.TimeUnit, a standard Jav...
Using boolean values in C
... @rpattiso You're quite right, of course, but I guess I would read !!a as "convert non-boolean a to its equivalent truth value", whereas I'd read !a as "logically invert the boolean variable a". In particular, I'd look for some specific reason the logical inversion was desired.
...
Is Python interpreted, or compiled, or both?
...tion to native machine code. A compiler is, more generally, a program that converts a program in one programming language into a program in another programming language (arguably, you can even have a compiler with the same input and output language if significant transformations are applied). And JI...
RGB to hex and hex to RGB
How to convert colors in RGB format to hex format and vice versa?
50 Answers
50
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How to make the division of 2 ints produce a float instead of another int?
...and n and d have opposite signs.
This is why 1/2 does not give a float.
Converting just either one to float as in (float)1/2 suffices because 15.17. Multiplicative Operators says:
Binary numeric promotion is performed on the operands
and 5.6.2. Binary Numeric Promotion says:
If eithe...
How do you return a JSON object from a Java Servlet
...
First convert the JSON object to String. Then just write it out to the response writer along with content type of application/json and character encoding of UTF-8.
Here's an example assuming you're using Google Gson to convert a Ja...
How to get numbers after decimal point?
...0') % 1
Decimal('0.20')
As kindall notes in the comments, you'll have to convert native floats to strings first.
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Does Python's time.time() return the local or UTC timestamp?
...alue at the same moment.
Here is some sample output I ran on my computer, converting it to a string as well.
Python 2.7.3 (default, Apr 24 2012, 00:00:54)
[GCC 4.7.0 20120414 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import time
&g...
How do I load a file from resource folder?
...ce returns a URL, not a file. The getFile method of java.net.URL does not convert a URL to a file; it just returns the path and query portions of the URL. You shouldn't even try to convert it to a File; just call openStream and read from that.
– VGR
Apr 7 '...