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What does the “at” (@) symbol do in Python?
...rators.
Read more here:
PEP 318: Decorators
Python Decorators
The most common Python decorators you'll run into are:
@property
@classmethod
@staticmethod
If you see an @ in the middle of a line, that's a different thing, matrix multiplication. Scroll down to see other answers that address th...
best way to preserve numpy arrays on disk
...es, hdf5 performances very slow reading and writing with chunk storage and compression enabled. For example, I've two 2-D arrays with shape (2500,000 * 2000) with chunk size (10,000 * 2000). A single write operation of a array with shape (2000 * 2000) will take about 1 ~ 2s to complete. Do you have ...
Highlight a word with jQuery
...icense.
Johann Burkard
<http://johannburkard.de>
<mailto:jb@eaio.com>
*/
jQuery.fn.highlight = function(pat) {
function innerHighlight(node, pat) {
var skip = 0;
if (node.nodeType == 3) {
var pos = node.data.toUpperCase().indexOf(pat);
if (pos >= 0) {
var spannode = ...
Combining two expressions (Expression)
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Well, you can use Expression.AndAlso / OrElse etc to combine logical expressions, but the problem is the parameters; are you working with the same ParameterExpression in expr1 and expr2? If so, it is easier:
var body = Expression.AndAlso(expr1.Body, expr2.Body);
var lambda = E...
Can you change what a symlink points to after it is created?
Does any operating system provide a mechanism (system call — not command line program) to change the pathname referenced by a symbolic link (symlink) — other than by unlinking the old one and creating a new one?
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Difference between __getattr__ vs __getattribute__
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xcodebuild says does not contain scheme
... 'private' until they are specifically marked as shared. In the case of a command-line initiated build, the Xcode UI never runs and the xcoderun tool doesn't have its own cache of Schemes to work with. The goal is to generate, share, and commit the scheme you want Bamboo to run:
On a clean worki...
UnboundLocalError on local variable when reassigned after first use
...tion, it is treated by default as a local variable. Therefore, when you uncomment the line you are trying to reference the local variable c before any value has been assigned to it.
If you want the variable c to refer to the global c = 3 assigned before the function, put
global c
as the first l...
How to determine if a point is in a 2D triangle? [closed]
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It's commonly used in 2D. Barycentric coordinates tend to confuse people. Also, given the cooridates of the triangle, and the point cordinate, I'm unsure about the efficiency of using barycentrics.
– Kornel K...
PHP Regex to check date is in YYYY-MM-DD format
...t worked for the person who asked, read this beautiful tour: stackoverflow.com/tour .
– stramin
Feb 8 '17 at 12:56
@Gr...