大约有 48,000 项符合查询结果（耗时：0.0441秒） [XML]
Fastest way to list all primes below N
...tmp) )//const
del_mult(tmptk[off], start, prime)
# now we go back to top tk1, so we need to increase pos by 1
pos += 1
cpos = const * pos
# 30k + 1
if tk1[pos]:
prime = cpos + 1
p.append(prime)
lastadded = 1
...
Using HTML5/Canvas/JavaScript to take in-browser screenshots
...http://hertzen.com/experiments/jsfeedback/
edit
The html2canvas script is now available separately here and some examples here.
edit 2
Another confirmation that Google uses a very similar method (in fact, based on the documentation, the only major difference is their async method of traversing/dra...
What is in your Mathematica tool bag? [closed]
We all know that Mathematica is great, but it also often lacks critical functionality. What kind of external packages / tools / resources do you use with Mathematica?
...
WAMP error: Forbidden You don't have permission to access /phpmyadmin/ on this server
...
The Put Online option is now unavailable. To enable it, Right click on the Wamp Icon > Wamp settings > Check on the Menu item: Online/Offline, when you now left click on the icon, the 'Put Online' option will be available
–...
Why do I need to explicitly push a new branch?
...same name, creating them if they don't exist),
the default push policy is now 'simple' (push only the current branch, and only if it has a similarly named remote tracking branch on upstream, since git 1.7.11)
In both cases, since the upstream empty repo has no branch:
there is no matching named...
How can I push a specific commit to a remote, and not previous commits?
...cific git setup. Perhaps you rebased past the remote HEAD commit? I don't know what a protected branch is, sounds like a permission issue.
– Samuel
Jan 13 '16 at 16:49
1
...
error: passing xxx as 'this' argument of xxx discards qualifiers
...
}
string getName() const {
return name;
}
This is necessary because now you can call getId() and getName() on const objects as:
void f(const StudentT & s)
{
cout << s.getId(); //now okay, but error with your versions
cout << s.getName(); //now okay, but error with...
Why is super.super.method(); not allowed in Java?
...- RedItems can always be confident that the items it contains are all red. Now suppose we were able to call super.super.add():
public class NaughtyItems extends RedItems
{
@Override
public void add(Item item)
{
// I don't care if it's red or not. Take that, RedItems!
sup...
How can I tell when a MySQL table was last updated?
...ENT_TIMESTAMP,
KEY (updated_at)
);
mysql> INSERT INTO foo VALUES (1, NOW() - INTERVAL 3 DAY), (2, NOW());
mysql> SELECT * FROM foo;
+----+------+---------------------+
| id | x | updated_at |
+----+------+---------------------+
| 1 | NULL | 2013-08-18 03:26:28 |
| 2 | NULL | ...
Extending an Object in Javascript
...for brevity, property assignments are skipped because you get the point by now.
Object.assign(darthVader, Robot)
Darth Vader gets the methods of Robot:
darthVader.greet() // inherited from `Person`, outputs "Hi, my name is Darth Vader..."
darthVader.machineGreet() // inherited from `Robot`, outputs...