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What is the 'pythonic' equivalent to the 'fold' function from functional programming?
...(xs):
return reduce(operator.mul, xs, 1)
Be aware that reduce is actually a foldl, in Haskell terms. There is no special syntax to perform folds, there's no builtin foldr, and actually using reduce with non-associative operators is considered bad style.
Using higher-order functions is quite p...
Swift Beta performance: sorting arrays
...t))
// [-1, 0, 2, 2, 5, 8, 1234]
// [-1, 0, 2, 2, 5, 8, 1234]
Both are called in the same program as written.
var x_swift = CInt[](count: n, repeatedValue: 0)
var x_c = CInt[](count: n, repeatedValue: 0)
for var i = 0; i < n; ++i {
x_swift[i] = CInt(random())
x_c[i] = CInt(random())
}...
How to structure a express.js application?
... it.
Of those, I think Twitter's matador is structured pretty well. We actually used a very similar approach to how they load up parts of the app.
derby.js also looks extremely interesting. It's akin to meteor without all of the hype and actually gives credit where credit is due (notably, node and e...
Strip spaces/tabs/newlines - python
I am trying to remove all spaces/tabs/newlines in python 2.7 on Linux.
7 Answers
7
...
can't push to branch after rebase
...erge on my development branches because they'll be rebased at any time. Usually the workflow is as follows:
o-----o-----o-----o-----o-----o master
\
o-----o-----o devel0
\
o-----o-----o devel1
Then to stay up-to-date with remo...
How to remove old Docker containers
...can use Docker container prune:
docker container prune
This will remove all stopped containers and should work on all platforms the same way.
There is also a Docker system prune:
docker system prune
which will clean up all unused containers, networks, images (both dangling and unreferenced), ...
Google Tag Manager 入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的tag可定制的地方很少。
Rule：
加载规则，默认的是，All pages规则，可以自己添加，以和Tag关联，决定在什么条件下，加载指定的tag。
Macro：
宏，预定义的名称键值对，默认有：event，referrer，url三个宏，宏可以应用在rule和ta...
ruby on rails f.select options with custom attributes
...at you want:
(1) Using a custom attribute name in HTML5. In HTML5 you are allowed to have custom attribute names, but they have to be pre-pended with 'data-'. These custom attributes will not get submitted with your form, but they can be used to access your elements in Javascript. If you want to ac...
How to clear variables in ipython?
...nd I get bad surprises when variables haven't been cleared. How do I clear all variables?
And is it possible to force this somehow every time I invoke the magic command %run?
...
Add a prefix to all Flask routes
...tant to the route at every definition. Is there a way to do this automatically?
10 Answers
...