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Code Golf: Lasers
...s to write w=p-G instead of w=p-G+1. Also, this finishes off the ?: chain from the M's.
for(;
q+=m,
Move the light by the movement vector.
m=
*q&4
?(*q&1?-1:1)*(
m/w?m/w:m*w
)
Reflect the movement vector.
...
Is it .yaml or .yml?
...l endorsement), I would note that the YAML.org website's latest news item (from November, 2011) is all about a project written in JavaScript, JS-YAML, which, itself, internally prefers to use the extension ".yml".
The above-mentioned factors may have been the main ones; nevertheless, all the factor...
Why are floating point numbers inaccurate?
...110011001100110011001100110011001100110 x 1011
Which we can then convert from binary to decimal:
1.1499999999999999 x 23 (inexact!)
And multiply to reveal the final representation of the number we started with (9.2) after being stored as a floating point value:
9.1999999999999993
Rep...
Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
...time relative to the old, we can ensure that the timer does not drift away from the whole-second mark due to any delays in processing the handler.)
t->expires_at(t->expires_at() + boost::posix_time::seconds(1));
然后我们开始一个新的同步等待.如您所见,我们用把print和他的...
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...