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What is the reason for having '//' in Python? [duplicate]
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To complement Alex's response, I would add that starting from Python 2.2.0a2, from __future__ import division is a convenient alternative to using lots of float(…)/…. All divisions perform float divisions, except those with //. This works with all versions from 2.2.0a2 on.
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Does PostgreSQL support “accent insensitive” collations?
...93C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.69...
PDOException “could not find driver”
... the steps to completely remove php5 before verifying that php7 will work: a2dismod php5, a2enmod php7.0, and service apache2 restart finally got me back up and running.
– depwl9992
Nov 13 '17 at 4:05
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Checkout subdirectories in Git?
...7d5230379e4652f1b1da7ed1e78e0b8253e03ba3 master
8b25206ff90e9432f6f1a8600f87a7bd695a24af master/master
ef29f15c9a7c5417944cc09711b6a9ee51b01d89
19f7a4ca4a038aff89d803f017f76d2b66063043 mybranch
1b671b190e293aa091239b8b5e8c149411d00523 mybranch/mybranch
c3760bb1a0ece87cdbaf9a563c77a45e30a4e30e
a0234d...
WordPress is giving me 404 page not found for all pages except the homepage
...default index.html file for details - in Ubuntu, you do it with the helper a2enmod.
Verify that apache server is looking at the .htaccess file. open httpd.conf - or it's Ubuntu's alternative, /etc/apache2/apache2.conf. In it, You should have something like
<Directory /path/to/wordpress>
Opt...
How do I disable directory browsing?
...che2.conf or add Options -Indexes in .htaccess file), here is another one
a2dismod autoindex
Restart the apache2 server afterwards
sudo service apache2 restart
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What is the most efficient way to concatenate N arrays?
...ncat.apply([], arrayOfArraysToConcat);
Example:
var a1 = [1, 2, 3],
a2 = [4, 5],
a3 = [6, 7, 8, 9];
Array.prototype.concat.apply([], [a1, a2, a3]); // [1, 2, 3, 4, 5, 6, 7, 8, 9]
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Why aren't variable-length arrays part of the C++ standard?
...e<typename T> bool myfunc(T& t1, T& t2) { ... };
int A1[n1], A2[n2];
myfunc(A1, A2);
The compiler must generate code for some instantiation of myfunc. What should that code look like? How can we statically generate that code, if we don't know the type of A1 at compile time?
Worse, w...
程序员之网络安全系列（五）：数字证书以及12306的证书问题 - 更多技术 - ...
...间的信任关系，是可以嵌套的。比如，A 信任 A1，A1 信任 A2，A2 信任 A3……,这就是证书的信任链。只要你信任链上的第一个证书，那后续的证书，都是可以信任的。
根证书(Root Certificate): 下图，处于最顶上的树根位置的那个证...
Java rounding up to an int using Math.ceil
...(to 4.0)
if you use a variables you can avoid that
double a1=157;
double a2=32;
int total = (int) Math.ceil(a1/a2);
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