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How can I truncate a double to only two decimal places in Java?
...
Formating as a string and converting back to double i think will give you the result you want.
The double value will not be round(), floor() or ceil().
A quick fix for it could be:
String sValue = (String) String.format("%.2f", oldValue);
Double ...
How to convert an enum type variable to a string?
...stead, but I think it's a bit cleaner to require an explicit "ToString" to convert the value to string form.
As a usage example, your OS_type enumeration would be defined as follows:
DEFINE_ENUM_WITH_STRING_CONVERSIONS(OS_type, (Linux)(Apple)(Windows))
While the macro looks at first like it is a...
Backporting Python 3 open(encoding=“utf-8”) to Python 2
...ython 2.6 and 2.7 you can use io.open instead of open. io is the new io subsystem for Python 3, and it exists in Python 2,6 ans 2.7 as well. Please be aware that in Python 2.6 (as well as 3.0) it's implemented purely in python and very slow, so if you need speed in reading files, it's not a good opt...
How to append rows to an R data frame
...m:
You should use stringsAsFactors if you want the characters to not get converted to factors. Use: df = data.frame(x = numeric(), y = character(), stringsAsFactors = FALSE)
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Why is iostream::eof inside a loop condition (i.e. `while (!stream.eof())`) considered wrong?
...ful.
// if it wasn't, the returned stream from operator>> would be converted to false
// and the loop wouldn't even be entered
// do stuff with correctly initialized data (hopefully)
}
And on your second question: Because
if(scanf("...",...)!=EOF)
is the same as
if(!(inStream >&...
How to create a custom-shaped bitmap marker with Android map API v2 [duplicate]
...e get the latitude , longitude and url form the web service , then how to convert the url into bitmap in it so fast
– Rishi Gautam
Apr 26 '13 at 10:13
...
FFmpeg: How to split video efficiently?
...est4.mkv
Which outputs...
Two commands
real 0m16.201s
user 0m1.830s
sys 0m1.301s
real 0m43.621s
user 0m4.943s
sys 0m2.908s
One command
real 0m59.410s
user 0m5.577s
sys 0m3.939s
I tested a SD & HD file, after a few runs & a little maths.
Two commands SD 0m53.94 #2 wins ...
Why is a round-trip conversion via a string not safe for a double?
...ng .NET 4.5.1 (x64), running the following console app which uses my DoubleConverter class.DoubleConverter.ToExactString shows the exact value represented by a double:
using System;
class Test
{
static void Main()
{
double d1 = 0.84551240822557006;
string s = d1.ToString("r...
Function passed as template argument
...code. So the instantiated code for do_op with fadd looks something like:
convert a and b from int to float.
call the function ptr op with float a and float b.
convert the result back to int and return it.
By comparison, our by-value case requires an exact match on the function arguments.
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How to create Drawable from resource
...showing.setImageResource(R.drawable.one);
only then the drawable will we converted exactly.
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