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What does “dereferencing” a pointer mean?
...hat can be written to, then you can do things like this:
int x = 2;
int* p_x = &x; // Put the address of the x variable into the pointer p_x
*p_x = 4; // Change the memory at the address in p_x to be 4
assert(x == 4); // Check x is now 4
Above, you must have known at compile time that ...
Where does gcc look for C and C++ header files?
...rog-name=cpp) -v (correctly) gives one more path, which is /usr/include/x86_64-linux-gnu
– wlnirvana
May 6 '16 at 15:10
3
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Getting the max value of an enum
...m MyEnum
{
ValueOne,
ValueTwo
}
VB:
Public Function GetMaxValue _
(Of TEnum As {IComparable, IConvertible, IFormattable})() As TEnum
Dim type = GetType(TEnum)
If Not type.IsSubclassOf(GetType([Enum])) Then _
Throw New InvalidCastException _
("Cannot cast ...
How can I find where Python is installed on Windows?
...on about your installation:
import sys
print sys.executable
print sys.exec_prefix
I'm not sure what this will give on your Windows system, but on my Mac executable points to the Python binary and exec_prefix to the installation root.
You could also try this for inspecting your sys module:
impor...
Are the PUT, DELETE, HEAD, etc methods available in most web browsers?
...ere's the bug if you want to follow along at home: w3.org/Bugs/Public/show_bug.cgi?id=10671
– Emil Lerch
Oct 21 '11 at 17:43
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In Python, when should I use a function instead of a method?
... as cars. You mention a duck, so let's go with that.
class duck:
def __init__(self):pass
def eat(self, o): pass
def crap(self) : pass
def die(self)
....
In the context of the "objects are real things" analogy, it is "correct" to add a class method for anything which the obje...
How can you profile a Python script?
...metimes the approaches are somewhat kludgey - i.e., adding timing code to __main__ .
29 Answers
...
Wildcards in jQuery selectors
...
To get the id from the wildcard match:
$('[id^=pick_]').click(
function(event) {
// Do something with the id # here:
alert('Picked: '+ event.target.id.slice(5));
}
);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js">&...
How does one create an InputStream from a String? [duplicate]
...hod above.
After JDK 7+ you can use
java.nio.charset.StandardCharsets.UTF_16
instead of hardcoded encoding string:
InputStream is = new ByteArrayInputStream(StandardCharsets.UTF_16.encode(myString).array());
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How to crop an image in OpenCV using Python
...y simple. Use numpy slicing.
import cv2
img = cv2.imread("lenna.png")
crop_img = img[y:y+h, x:x+w]
cv2.imshow("cropped", crop_img)
cv2.waitKey(0)
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