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How can I create a copy of an object in Python?
...efine __copy__ (for shallow copies) and/or __deepcopy__ (for deep copies).
from copy import copy, deepcopy
class Copyable:
__slots__ = 'a', '__dict__'
def __init__(self, a, b):
self.a, self.b = a, b
def __copy__(self):
return type(self)(self.a, self.b)
def __deepcopy...
Draw in Canvas by finger, Android
...or you just get duplicates
// almost always you will want to reduce res from the very high screen res
whatTheUserDrewBitmap =
ThumbnailUtils.extractThumbnail(whatTheUserDrewBitmap, 256, 256);
// NOTE that's an incredibly useful trick for cropping/resizing squares
// while handling ...
Difference between Role and GrantedAuthority in Spring Security
...Authorities of all its roles and the corresponding operations are returned from the UserDetails.getAuthorities() method.
Example:
The admin role with id ROLE_ADMIN has the operations OP_DELETE_ACCOUNT, OP_READ_ACCOUNT, OP_RUN_BATCH_JOB assigned to it.
The user role with id ROLE_USER has the operat...
How can I find the data structure that represents mine layout of Minesweeper in memory?
...) functions being called to generate the mine field and then trace through from there to see at what location the field is stored at in memory (and how).
– mmcdole
Jul 23 '09 at 19:05
...
Performance of static methods vs instance methods
...t to small private pieces your fine, if its a public method and you use it from other closes and need to change what it does in your test then your stuck, things like file IO or database access or network calls etc, if put in static method will become unmockable, unless like you say you inject a moc...
Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T
...ence in one thread and pass it to another thread; however, accessing a TST from two different threads results in a very specific error "Transaction context in use by another session". To multi-thread a TST, you must create a DependantTransaction, but at that point it must be a distributed transacti...
How to add a search box with icon to the navbar in Bootstrap 3?
...
You could use the segmented buttons example from Bootstrap 3:
<form action="" class="navbar-form navbar-right">
<div class="input-group">
<input type="Search" placeholder="Search..." class="form-control" />
<div class="input-group...
How do I detect a click outside an element?
...is now also available in all major browsers (the W3C version differs a bit from the jQuery one).
Polyfills can be found here: Element.closest()
Edit – 2020-05-21
In the case where you want the user to be able to click-and-drag inside the element, then release the mouse outside the element, without...
git merge: apply changes to code that moved to a different file
... one before the commits you want to merge; most likely, this is the commit from which you branched out to implement your changes. As user @digory doo wrote below, you can do git merge-base master local to find X.
---- X (move)-----CP----- (master)
\
`--A---B--- (local)
On this br...
Which kind of pointer do I use when?
...the object is owned.
Note that ownership in a software system is separate from ownership as we would think of it outside of software. For example, a person might "own" their home, but that doesn't necessarily mean that a Person object has control over the lifetime of a House object. Conflating thes...