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Split (explode) pandas dataframe string entry to separate rows
...]:
aaa myid num text
0 10 1 [1, 2, 3] [aa, bb, cc]
1 11 2 [] []
2 12 3 [1, 2] [cc, dd]
3 13 4 [] []
In [135]: explode(df, ['num','text'], fill_value='')
Out[135]:
aaa myid num text
0 10 1 1 aa...
Difference between web server, web container and application server
...mat data that is consumed by other application components.
Source: http://www.service-architecture.com/articles/application-servers/j2ee_web_server_or_container.html
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Difference between JSON.stringify and JSON.parse
...x":5}'
JSON.stringify(new Date(2006, 0, 2, 15, 4, 5))
// '"2006-01-02T15:04:05.000Z"'
JSON.stringify({ x: 5, y: 6 });
// '{"x":5,"y":6}' or '{"y":6,"x":5}'
JSON.stringify([new Number(1), new String('false'), new Boolean(false)]);
// '[1,"false",false]'
JSON.parse()
The JSON.parse() method par...
Executing JavaScript without a browser?
.../etc/alternatives/js /usr/bin/nodejs
lrwxrwxrwx 1 root root 15 Jul 16 04:26 /etc/alternatives/js -> /usr/bin/nodejs*
lrwxrwxrwx 1 root root 20 Jul 16 04:26 /usr/bin/js -> /etc/alternatives/js*
-rwxr-xr-x 1 root root 1422004 Apr 28 20:31 /usr/bin/nodejs*
$ chmod a+x foo.js
$ ./foo.js...
How to reference constants in EL?
... EL (but uses JSP with Spring).
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<spring:eval var="constant" expression="T(com.example.Constants).CONSTANT"/>
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Coroutine vs Continuation vs Generator
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
How to develop a soft keyboard for Android? [closed]
... }
private void isBack(View v) {
if (isEdit == true) {
CharSequence cc = mEt.getText();
if (cc != null && cc.length() > 0) {
{
mEt.setText("");
mEt.append(cc.subSequence(0, cc.length() - 1));
}
}
}
if (isEdit1 == true) {
CharSequence cc = mEt1.getTe...
微软开源 图像动画开发框架：openframeworks - 开源 & Github - 清泛网 - ...
...体的可以看其官网的演示视频。
openframeworks（http://www.openframeworks.cc/ ）是C++为基准的简洁开发框架，擅长开发图像和动画。能在多个平台上运行(PC, Mac, Linux, iPhone)。
主要有以下特征：
◇ 通过编码来制作图像和动画。
...
SQL Server insert if not exists best practice
... SELECT 1
FROM
CompetitionCompetitor AS cc
JOIN Competition AS c ON c.[ID] = cc.[CompetitionID]
WHERE
cc.[CompetitorID] = p.[CompetitorID]
AND cc.[CompetitionName] = @CompetitionNAme
)
And if you...
How to create war files
...ask that creates the distribution directory and copies any artifacts that need to be WARred directly:
<target name="setup">
<mkdir dir="dist" />
<echo>Copying web into dist</echo>
<copydir dest="dist/web" src="web" />
<copydir dest="dist/web/WEB-INF/...