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Difference between Node object and Element object?
...e various types of nodes here (diagram from MDN):
You can see an ELEMENT_NODE is one particular type of node where the nodeType property has a value of 1.
So document.getElementById("test") can only return one node and it's guaranteed to be an element (a specific type of node). Because of that ...
What is a plain English explanation of “Big O” notation?
...
-1: This is blatantly wrong: _"BigOh is relative representation of complexity of algorithm". No. BigOh is an asymptotic upper bound and exists quite well independent of computer science. O(n) is linear. No, you are confusing BigOh with theta. log n is O(...
CSS styling in Django forms
...aken from my answer to:
How to markup form fields with <div class='field_type'> in Django
class MyForm(forms.Form):
myfield = forms.CharField(widget=forms.TextInput(attrs={'class' : 'myfieldclass'}))
or
class MyForm(forms.ModelForm):
class Meta:
model = MyModel
def __i...
error: passing xxx as 'this' argument of xxx discards qualifiers
...ere the value
type is the same as the key type, both
iterator and const_iterator are
constant iterators. It is unspecified
whether or not iterator and
const_iterator are the same type.
So VC++ 2008 Dinkumware implementation is faulty.
Old answer:
You got that error because in certain...
How can I find and run the keytool
...n by myself as below quote. It works fine.
"C:\Program Files\Java\jdk1.6.0_26\bin\keytool.exe" -exportcert -alias
> sociallisting -keystore "D:\keystore\SocialListing" |
> "C:\cygwin\bin\openssl.exe" sha1 -binary | "C:\cygwin\bin\openssl.exe"
> base64
...
Generate a heatmap in MatPlotLib using a scatter data set
...
x = y = NP.linspace(-5, 5, 100)
X, Y = NP.meshgrid(x, y)
Z1 = ML.bivariate_normal(X, Y, 2, 2, 0, 0)
Z2 = ML.bivariate_normal(X, Y, 4, 1, 1, 1)
ZD = Z2 - Z1
x = X.ravel()
y = Y.ravel()
z = ZD.ravel()
gridsize=30
PLT.subplot(111)
# if 'bins=None', then color of each hexagon corresponds directly to i...
Compile time string hashing
...the code snippet:
// CRC32 Table (zlib polynomial)
static constexpr uint32_t crc_table[256] = {
0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d0...
How do I format a string using a dictionary in python-3.x?
...
Python 3.2 introduced format_map. Similar to str.format(**mapping), except that mapping is used directly and not copied to a dict. This is useful if for example mapping is a dict subclass
– diapir
Jan 17 '15 at 14:...
How do I get indices of N maximum values in a NumPy array?
...t;> a = [1, 3, 2, 4, 5]
>>> heapq.nlargest(3, range(len(a)), a.__getitem__)
[4, 3, 1]
If you use Python 2, use xrange instead of range.
Source: heapq — Heap queue algorithm
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C# binary literals
...t separators via underscore characters).
An example:
int myValue = 0b0010_0110_0000_0011;
You can also find more information on the Roslyn GitHub page.
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