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How do I calculate square root in Python?
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sqrt=x**(1/2) is doing integer division. 1/2 == 0.
So you're computing x(1/2) in the first instance, x(0) in the second.
So it's not wrong, it's the right answer to a different question.
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undefined reference to `WinMain@16'
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Consider the following Windows API-level program:
#define NOMINMAX
#include <windows.h>
int main()
{
MessageBox( 0, "Blah blah...", "My Windows app!", MB_SETFOREGROUND );
}
Now let's build it using GNU toolchain (i.e. g++), no special options. Here gnuc is just a batch file th...
How can I create a correlation matrix in R?
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An example,
d &lt- data.frame(x1=rnorm(10),
x2=rnorm(10),
x3=rnorm(10))
cor(d) # get correlations (returns matrix)
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Using python map and other functional tools
... nest of bugs introduced by having global state. As maptest depends on an external definition of bars, this principle is broken.
– image_doctor
Jul 10 '13 at 13:22
3
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Does a break statement break from a switch/select?
...o Programming Language Specification.
A "break" statement terminates execution of the innermost "for",
"switch" or "select" statement.
BreakStmt = "break" [ Label ] .
If there is a label, it must be that of an enclosing "for", "switch"
or "select" statement, and that is the one whose...
How do I specify the Linq OrderBy argument dynamically?
...typeof(Student).GetProperty(param);
var orderByAddress = items.OrderBy(x => propertyInfo.GetValue(x, null));
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foreach with index [duplicate]
... there a C# equivalent of Python's enumerate() and Ruby's each_with_index ?
10 Answers
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Convert bytes to a string
I'm using this code to get standard output from an external program:
19 Answers
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What are invalid characters in XML
I am working with some XML that holds strings like:
15 Answers
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About Android image and asset sizes
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mdpi is the reference density -- that is, 1 px on an mdpi display is equal to 1 dip. The ratio for asset scaling is:
ldpi | mdpi | tvdpi | hdpi | xhdpi | xxhdpi | xxxhdpi
0.75 | 1 | 1.33 | 1.5 | 2 | 3 | 4
Although you don't really need to worry about tv...