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What is the idiomatic way to compose a URL or URI in Java?
...n(String[] args) throws URISyntaxException {
List<NameValuePair> qparams = new ArrayList<NameValuePair>();
qparams.add(new BasicNameValuePair("q", "httpclient"));
qparams.add(new BasicNameValuePair("btnG", "Google Search"));
qparams.add(new BasicNameValuePair("aq", "f"));...
How do I check if a variable exists in a list in BASH
...
Matvey is right, but you should quote $x and consider any kind of "spaces" (e.g. new line) with
[[ $list =~ (^|[[:space:]])"$x"($|[[:space:]]) ]] && echo 'yes' || echo 'no'
so, i.e.
# list_include_item "10 11 12" "2"
function list_include_item ...
What is tail recursion?
... return tailrecsum(x - 1, running_total + x);
}
}
Here's the sequence of events that would occur if you called tailrecsum(5), (which would effectively be tailrecsum(5, 0), because of the default second argument).
tailrecsum(5, 0)
tailrecsum(4, 5)
tailrecsum(3, 9)
tailrecsum(2, 12)
tailr...
Appending a line to a file only if it does not already exist
...
Just keep it simple :)
grep + echo should suffice:
grep -qxF 'include "/configs/projectname.conf"' foo.bar || echo 'include "/configs/projectname.conf"' >> foo.bar
-q be quiet
-x match the whole line
-F pattern is a plain string
https://linux.die.net/man/1/grep
Edit:
inc...
Linux环境离线安装docker&docker-compose - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...cho "停止所有容器服务"
docker stop $(docker ps -a -q)
echo "删除所有容器"
docker rm $(docker ps -a -q)
echo "删除docker所有镜像"
docker rmi -f $(docker images -q)
echo '停止docker服...
Git submodule update
...
This GitPro page does summarize the consequence of a git submodule update nicely
When you run git submodule update, it checks out the specific version of the project, but not within a branch. This is called having a detached head — it means the HEAD file point...
Java string to date conversion
... 7; 07; Jul; July; J
d day-of-month number 10
Q/q quarter-of-year number/text 3; 03; Q3; 3rd quarter
Y week-based-year year 1996; 96
w week-of-week-based-year number 27
W week-of-month numb...
LINQ: “contains” and a Lambda query
...hether it contains a status whose char code (returned by GetCharCode() ) equals some variable, v.Status .
6 Answers
...
30条爆笑的程序员梗 PHP是最好的语言 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...醉还来屏下眠;酒醉酒醒日复日，得自娱自乐才行。1.问答Q：你是怎么区分一个内向的程序员...程序人员写程序,又将程序换酒钱;酒醒只在屏前坐,酒醉还来屏下眠;酒醉酒醒日复日，得自娱自乐才行。
1.问答
Q：你是怎么区分一个...
What is the difference between a pseudo-class and a pseudo-element in CSS?
...y by a value between parentheses.
Pseudo-classes are allowed in all sequences of simple selectors contained in a selector. Pseudo-classes are allowed anywhere in sequences of simple selectors, after the leading type selector or universal selector (possibly omitted). Pseudo-class names are case-...