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How to Update Multiple Array Elements in mongodb
...
What worked for me was this:
db.collection.find({ _id: ObjectId('4d2d8deff4e6c1d71fc29a07') })
.forEach(function (doc) {
doc.events.forEach(function (event) {
if (event.profile === 10) {
event.handled=0;
}
});
db.collection.save(doc);
});
...
Why do I get a segmentation fault when writing to a “char *s” initialized with a string literal, but
...the pointer to void * as in printf("%p", (void *)str); When printing a size_t with printf, you should use "%zu" if using the latest C standard (C99).
– Chris Young
Oct 3 '08 at 7:44
...
Converting XML to JSON using Python?
...nversion.
from xml.etree import ElementTree as ET
xml = ET.parse('FILE_NAME.xml')
parsed = parseXmlToJson(xml)
def parseXmlToJson(xml):
response = {}
for child in list(xml):
if len(list(child)) > 0:
response[child.tag] = parseXmlToJson(child)
else:
response[child.t...
How to save an HTML5 Canvas as an image on a server?
... a hidden field. After that I submit the form.
document.getElementById('my_hidden').value = canvas.toDataURL('image/png');
document.forms["form1"].submit();
4) When the form is submited I have this small php script:
<?php
$upload_dir = somehow_get_upload_dir(); //implement this function you...
Combining node.js and Python
... s = zerorpc.Server(HelloRPC())
s.bind("tcp://*:4242")
s.run()
if __name__ == "__main__" : main()
And the node.js client:
var zerorpc = require("zerorpc");
var client = new zerorpc.Client();
client.connect("tcp://127.0.0.1:4242");
//calls the method on the python object
client.invoke("h...
How can I get a user's media from Instagram without authenticating as a user?
...n perform https://api.instagram.com/v1/users/[USER ID]/media/recent/?client_id=[CLIENT ID]
[CLIENT ID] would be valid client id registered in app through manage clients (not related to user whatsoever).
You can get [USER ID] from username by performing GET users search request:
https://api.instagra...
WebSocket客户端使用指导 · App Inventor 2 中文网
...://电脑IP:8767，Ctrl+C结束。", flush=True)
await 服务.serve_forever()
if __name__ == "__main__":
try:
asyncio.run(主程序())
except KeyboardInterrupt:
pass
电脑监听地址 0.0.0.0 表示接受局域网连接；手机连接地址必须是电脑实际局...
Recursively remove files
Does anyone have a solution to remove those pesky ._ and .DS_Store files that one gets after moving files from a Mac to A Linux Server?
...
App Inventor 2 息屏与后台运行问题解决方案 · App Inventor 2 中文网
...通道("background", "后台服务", "后台运行通知", 2)
}
when 按钮_开始后台.Click() {
// 发送持续通知，阻止系统杀后台
NotificationStyle1.VisibilityShowing("background", 1, "正在运行", "App正在后台运行中", "app_icon")
}
方案三：使用定时唤...
How do I install cygwin components from the command line?
...tended setup mode').
(Note that you need to use setup-x86.exe or setup-x86_64.exe as appropriate.)
See http://cygwin.com/packages/ for the package list.
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