大约有 23,000 项符合查询结果（耗时：0.0760秒） [XML]
Comparing Haskell's Snap and Yesod web frameworks
...ll.
Snap does have sessions and authentication, interfaces to several databases, and nice form handling (here and here) using digestive-functors that includes prepackaged support for arbitrarily nested dynamically sizable lists. These are just some of the growing ecosystem of pluggable snaplets. ...
Any good boolean expression simplifiers out there? [closed]
...
You can try Wolfram Alpha as in this example based on your input:
http://www.wolframalpha.com/input/?i=((A%20OR%20B)%20AND%20(NOT%20B%20AND%20C)%20OR%20C)&t=crmtb01&f=rc
share
...
Load data from txt with pandas
...
Based on the latest changes in pandas, you can use, read_csv , read_table is deprecated:
import pandas as pd
pd.read_csv("file.txt", sep = "\t")
sh...
Should CSS always preceed Javascript?
... before CSS will have a performance penalty on 15% of users globally; YMMV based on your site's specific audience. (And remember that number is shrinking.)
On mobile browsers, it's a little harder to get definitive numbers simply due to how heterogeneous the mobile browser and OS landscape is. Si...
Do I need a Global.asax.cs file at all if I'm using an OWIN Startup.cs class and move all configurat
... those looking for the complete steps: If you are looking to create a OWIN based, IIS hosted web API, these steps should get you there:
File -> New -> Project
In the dialogue, Installed -> templates -> Other Project types -> Visual Studio Solutions -> Blank Solution targeting .NE...
git + LaTeX workflow
...itive\n";
else
dire=$(dirname $PWD/$1);
based=$(git rev-parse --show-toplevel);
git show HEAD~$2:$(echo $dire| sed 's!'$(echo $based)'/!!')/$1 > $1_diff.tmp;
latexdiff $1 $1_diff.tmp > $1_diff.tex;
pdflatex $1_diff.te...
How do I make a list of data frames?
...Splitting a data frame into a list of data frames
This is super-easy, the base function split() does it for you. You can split by a column (or columns) of the data, or by anything else you want
mt_list = split(mtcars, f = mtcars$cyl)
# This gives a list of three data frames, one for each value of ...
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
...its encoding and even its data type, making it unusable with any non-TCHAR based API. Since its purpose is migration to wchar_t, which we've seen above isn't a good idea, there is no value whatsoever in using TCHAR.
1. Characters which are representable in wchar_t strings but which are not suppo...
lenses, fclabels, data-accessor - which library for structure access and mutation is better
...as Applicative is to Biplate: Introducing Multiplate and was blogged about based on a preprint by Jeremy Gibbons.
It also includes a number of combinators for working with lenses strictly and some stock lenses for containers, such as Data.Map.
So the lenses in data-lens form a Category (unlike the...
How to stop and restart memcached server?
...
if you have sudo (on Debian-based systems) no need for su -
– Marconius
Jan 17 '14 at 21:01
add a comment
| ...