大约有 1,500 项符合查询结果（耗时：0.0090秒） [XML]
What are the uses of “using” in C#?
... (http://www.amazon.com/5-0-Nutshell-The-Definitive-Reference-ebook/dp/B008E6I1K8), by Joseph and Ben Albahari. One example:
namespace HelloWorld
{
using AppFunc = Func<IDictionary<DateTime, string>, List<string>>;
public class Startup
{
public static AppFunc ...
Find size of Git repository
...[1] 91cc53b0c78596a73fa708cceb7313e7168bb146
[2] 2cde51fbd0f310c8a2c5f977e665c0ac3945b46d
[3] 4f86eed5893207aca2c2da86b35b38f2e1ec1fc8 (refs/heads/master:arch/arm/boot/dts)
[4] a02b6794337286bc12c907c33d5d75537c240bd0 (refs/heads/master:drivers/gpu/drm/amd/include/asic_reg/vega10/NBIO/nbio_6_1_s...
How to link to specific line number on github
...omething like this:
https://github.com/git/git/blob/5bdb7a78adf2a2656a1915e6fa656aecb45c1fc3/README#L18-L20
That link contains the actual SHA hash for that particular commit, rather than the current version of the file on master. That means that this link will work forever and not point to lines ...
How often should you use git-gc?
... 2.7 (Q4 2015) will make sure to not lose the error message.
See commit 329e6e8 (19 Sep 2015) by Nguyễn Thái Ngọc Duy (pclouds).
(Merged by Junio C Hamano -- gitster -- in commit 076c827, 15 Oct 2015)
gc: save log from daemonized gc --auto and print it next time
While commit 9f673f9 ...
Simple way to calculate median with MySQL
...al FROM data ORDER BY val limit @middlevalue) x;
I tested this with a 5x10e6 dataset of random numbers and it will find the median in under 10 seconds.
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filter for complete cases in data.frame using dplyr (case-wise deletion)
...his maybe as part of filter.
library('rbenchmark')
library('dplyr')
n = 5e6
n.na = 100000
df = data.frame(
x1 = sample(1:10, n, replace=TRUE),
x2 = sample(1:10, n, replace=TRUE)
)
df$x1[sample(1:n, n.na)] = NA
df$x2[sample(1:n, n.na)] = NA
benchmark(
df %>% filter(complete.cases(x...
u'\ufeff' in Python string
...est|\xd8\xa7\xd8\xae\xd8\xaa\xd8\xa8\xd8\xa7\xd8\xb1|\xe6\xb5\x8b\xe8\xaf\x95|\xe6\xb8\xac\xe8\xa9\xa6|\xe3\x83\x86\xe3\x82\xb9\xe3\x83\x88|\xe0\xa4\xaa\xe0\xa4\xb0\xe0\xa5\x80\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xb7\xe0\xa4\xbe|\xe0\xb4\xaa\xe0\xb4\xb0\xe0\xb4\xbf\xe0\xb4\xb6\xe0\xb5\x8b\xe0\xb4\xa7\xe...
Which concurrent Queue implementation should I use in Java?
... community wiki
7 revs, 2 users 92%Vipin
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...
Use CSS3 transitions with gradient backgrounds
...inear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.65625));}
92% {background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.675));}
94% {background:linear-gradient(to right, rgba(0,0,255,0.75),rgba(255,0,0,0.69375));}
96% {background:linear-gradient(to right,...
Regular expression to match a line that doesn't contain a word
...┬──┐
S = │e1│ A │e2│ B │e3│ h │e4│ e │e5│ d │e6│ e │e7│ C │e8│ D │e9│
└──┴───┴──┴───┴──┴───┴──┴───┴──┴───┴──┴───┴──┴───┴──┴───┴──┘
...