我有这个样本数据集:
let list = [
{'first': 'morgan', 'id': 1},
{'first': 'eric', 'id': 1},
{'first': 'brian', 'id': 2 },
{'first': 'derek', 'id' : 2},
{'first': 'courtney', 'id': 3},
{'first': 'eric', 'id': 4},
{'first': 'jon', 'id':4},
]
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我想结束这个:
[[1, [morgan, eric]], [2, [brian, derek]], [3, [courtney]], [4, [eric, jon]]
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我正在使用该.reduce()函数来映射列表.但是,我有点卡住了.
我有这个工作:
let b = list.reduce((final_list, new_item) => {
x = final_list.concat([[new_item.id, [new_item.first]]])
return x
}, [])
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但是,这会将列表展平为列表列表,但不会合并共享相似ID的名称.
我尝试使用.map() 下面的代码不起作用
我试图映射到final_list(这是[id,[names]]的列表,看看是否new_item存在的id smaller_list然后添加new_item.first到smaller_list[1](应该是名称列表).
这是正确的方法吗? …
我正在使用 chrome devTools 来镜像 webRequest。查看网络请求,响应中有一些我想要访问的 JSON 数据
\n\n右键单击 --> 复制为获取 -->
\n\nfetch(\n "https://www.url.com/service.svc?action=FindConversation&ID=-40&AC=1",\n {\n "credentials":"include",\n "headers":{\n "accept":"*/*",\n "accept-language":"en-US,en;q=0.9",\n "action":"FindConversation",\n "content-type":"application/json; charset=UTF-8",\n "actionid":"-40",\n "unique_identifier":"062lCufCY0i5mI9NMTRUsF87XDq9ttYIonzZQjBcCOPvzoIJFOTSI6ZVNK9lMwy_iPFY2tuZzPY."\n "x-requested-with":"XMLHttpRequest"\n },\n "referrer":"https://ballard.amazon.com/OWA/",\n "referrerPolicy":"no-referrer-when-downgrade",\n "body":"contains some body data I want to manipulate",\n "method":"POST",\n "mode":"cors"\n }\n).then(res => {console.log(res)})\nRun Code Online (Sandbox Code Playgroud)\n\n这会打印出类似这样的内容:
\n\nResponse {type: "basic", url: "https://url/service.svc?action=FindConversation&ID=-40&AC=1", redirected: false, status: 200, ok: true, \xe2\x80\xa6}\nbody: ReadableStream\nlocked: false\n__proto__: ReadableStream\nbodyUsed: false\nheaders: Headers {}\nok: true\nredirected: false\nstatus: 200\nstatusText: "OK"\ntype: "basic"\nurl: "https://url/OWA/service.svc?action=FindConversation&ID=-40&AC=1"\n__proto__: Response\nRun Code Online (Sandbox Code Playgroud)\n\n当我检查刚刚发出的网络请求时,它看起来没有返回任何 JSON 数据,而是用代码进行响应200。这正常吗?
我要么期望它返回 JSON 数据,要么失败。 …
我正在尝试安装 Google SDK
我输入:
export PYTHONPATH=$PYTHONPATH:/Users/morganallen/Dropbox/google_appengine
然后:
echo $PATH
我看到:
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/morganallen/Dropbox/google_appengine
但是当我退出终端并重新打开它并键入时,echo $PATH我只看到:
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
为什么不节省呢?
我看到其他答案提到了一个.bashrc文件,但我找不到我的?不知道该怎么办。
我不知道为什么这不起作用。在服务器上,我有这个:
@app.route('/message', methods=['POST'])
def print_post():
if request.headers['Content-Type'] == 'text/plain':
logging.warning(request.data)
return "Text Message: " + request.data
else:
logging.warning('didnt work')
return 'Unsupported Media Type'
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我正在通过浏览器发送此请求:
$.ajax({
type: "POST",
url: "https://localhost:8090/message",
data: 'this is a message'
contentType: 'test/plain'
})
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但我不断收到错误 Uncaught SyntaxError: Unexpected identifier
我究竟做错了什么?
我不习惯this和尝试使一些简单的函数来回传递它。我不太确定javascript期望什么,但是我认为我做的不正确。
$(".search-result").each(function() {
var x = $(this).find('.past-positions ol').children()
console.log(x)
//this prints as expected
pastJobs(this)
// this does not
})
function pastJobs() {
var x = $(this).find('.past-positions ol').children()
console.log(x)
// this prints as undefined
}
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我认为它可以传递this给函数,但是我认为我做的方法不正确。
我究竟做错了什么?
我有这个我试图解码的网址
var a = 'https%3A%2F%2Fwww.gem.com%2Fextension%3Furl%3D'
var b = decodeURI(a)
console.log(b)
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"https%3A%2F%2Fwww.gem.com%2Fextension%3Furl%3D"
我究竟做错了什么?
HTML 看起来像这样
<input type="hidden" name="csrfToken" value="ajax:SOME_TOKEN"/>
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我尝试了几种不同的方法,但总是出现错误。我认为这种方式看起来是正确的,但显然不是。
soup = BeautifulSoup(html_page)
soup.find('input', {'name':'csrfToken'})
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我不断得到:
TypeError: 'expected string or buffer'
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有什么想法吗?
我收到这个错误,我不明白为什么.
我正在学习使用Gmail的API并复制粘贴他们的示例:https://developers.google.com/gmail/api/v1/reference/users/threads/get#examples
这是代码:
def GetThread(service, user_id, thread_id):
"""Get a Thread.
Args:
service: Authorized Gmail API service instance.
user_id: User's email address. The special value "me"
can be used to indicate the authenticated user.
thread_id: The ID of the Thread required.
Returns:
Thread with matching ID.
"""
try:
thread = service.users().threads().get(userId=user_id, id=thread_id).execute()
messages = thread['messages']
print ('thread id: %s - number of messages '
'in this thread: %d') % (thread['id'], len(messages))
return thread
except errors.HttpError, error:
print 'An …Run Code Online (Sandbox Code Playgroud) 我使用 Create-React-App 创建了一个 React 项目。该package.json文件显示:
{
"name": "dashboard",
"version": "0.1.0",
"private": true,
"dependencies": {
"react": "^15.5.4",
"react-dom": "^15.5.4"
},
"devDependencies": {
"react-scripts": "1.0.7"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject"
}
}
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如何添加 Redux?我需要运行什么命令才能将其安装到我的 node_modules 中?
我正在gapi.auth2我的 index.html 中初始化
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="google-signin-client_id" content= "817677528939-dss5sreclldv1inb26tb3tueac98d24r.apps.googleusercontent.com">
<meta name="google-signin-scope" content="profile email">
<script src="https://apis.google.com/js/client:platform.js?onload=start" async defer></script>
<script>
function start() {
console.log('script running')
gapi.load('auth2', function() {
auth2 = gapi.auth2.init({
client_id: '817677528939-dss5sreclldv1inb26tb3tueac98d24r.apps.googleusercontent.com',
scope: 'profile email'
});
});
}
</script>
<!-- <meta name="theme-color" content="#000000"> -->
<!-- <link rel="manifest" href="%PUBLIC_URL%/manifest.json"> -->
<!-- <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico"> -->
<title>React App</title>
</head>
<body>
<div id="root"></div>
</body>
</html>
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然后在我的反应应用程序中:
在页面顶部: /* global gapi */ …