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Creating Multifield Indexes in Mongoose / MongoDB
...
Following command can be used to create compound index for nested json:
db.ACCOUNT_collection.createIndex({"account.id":1,"account.customerId":1},{unique:1})
Mongo json structure is like :
{"_id":"648738"
"account": {
"id": "123",
"customerId": 7879,
"name": "test"
..
...
Does JavaScript guarantee object property order?
...e following methods/loops guarantee no order at all:
Object.keys
for..in
JSON.parse
JSON.stringify
Conclusion: Even in ES2015 you shouldn't rely on the property order of normal objects in Javascript. It is prone to errors. Use Map instead.
...
Mongoose subdocuments vs nested schema
...
name: String
});
var mainDoc = new Schema({
names: [nestedDoc]
});
JSON Example
{
"_id" : ObjectId("57c88bf5818e70007dc72e85"),
"name" : "Corinthia Hotel Budapest",
"stars" : 5,
"description" : "The 5-star Corinthia Hotel Budapest on the Grand Boulevard offers free access to...
Remove whitespaces inside a string in javascript
... answered Aug 19 '19 at 21:41
JSON C11JSON C11
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What is “Linting”?
... answered Feb 13 '18 at 5:48
JSON C11JSON C11
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C++特化模板函数的符号多重定义错误问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...有一个可选的方法是将所有东西放在一个文件中，并用预处理符号控制实例化：
#ifdef MYLIB_IMPLEMENT_FUNCS
template<>
int compare<LPCTSTR>(LPCTSTR s1, LPCTSTR s2)
{
return _tcscmp(s1, s2);
}
#endif
使用该方法，所有模块都包含此头文件，但在...
socket.emit() vs. socket.send()
...ata, callback) is essentially equivalent to calling socket.emit('message', JSON.stringify(data), callback)
Without looking at the source code, I would assume that the send function is more efficient edit: for sending string messages, at least?
So yeah basically emit allows you to send objects, wh...
Using python's eval() vs. ast.literal_eval()?
...If all you need is a user provided dictionary, possible better solution is json.loads. The main limitation is that json dicts requires string keys. Also you can only provide literal data, but that is also the case for literal_eval.
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Do you debug C++ code in Vim? How? [closed]
...thub.com/puremourning/vimspector#installation
Configure (write .vimspector.json)
Compile with debug symbol g++ cpp.cpp -ggdb -o cpp
Press F4 to start debug
Note my .vimspector.json in my home directory (so work in any subdir)
{
"configurations": {
"Python - Launch": {
"adapter": "vscode...
ASP.NET MVC HandleError
...og(ex, filterContext);
}
// if the request is AJAX return JSON else view.
if (IsAjax(filterContext))
{
//Because its a exception raised after ajax invocation
//Lets return Json
filterContext.Result = new JsonResult()
{
...