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Stop Mongoose from creating _id property for sub-document array items
...ose");
var subSchema = mongoose.Schema({
//your subschema content
},{ _id : false });
var schema = mongoose.Schema({
// schema content
subSchemaCollection : [subSchema]
});
var model = mongoose.model('tablename', schema);
...
Is there a __CLASS__ macro in C++?
Is there a __CLASS__ macro in C++ which gives the class name similar to __FUNCTION__ macro which gives the function name
...
converting drawable resource image into bitmap
..... E/NotificationService: WARNING: In a future release this will crash the app:...
– Bhuro
Sep 26 '16 at 5:31
...
Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?
..., because list indexing only works with integers, or objects that define a __index__ method (thanks mark-dickinson).
Edit:
It is true of the current python version, and of that of Python 3. The docs for python 2.6 and the docs for Python 3 both say:
There are two types of integers: [...] Integ...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
...uses the same variable name. It is also a major security risk with register_globals turned on. E_NOTICE level error is issued in case of working with uninitialized variables, however not in the case of appending elements to the uninitialized array. isset() language construct can be used to detect if...
IIS7: HTTP->HTTPS Cleanly
...
This also worked for me. I had to add the application I was running under... localhost/app1 => http://{HTTP_HOST}/app1/{R:1}
– RealSollyM
May 6 '14 at 13:28
...
Hashing a dictionary?
...d make a frozenset with the dict's items and use hash():
hash(frozenset(my_dict.items()))
This is much less computationally intensive than generating the JSON string or representation of the dictionary.
UPDATE: Please see the comments below, why this approach might not produce a stable result.
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Ruby equivalent of virtualenv?
...
Neither sandbox, RVM, nor rbenv manage the versions of your app's gem dependencies. The tool for that is bundler.
use a Gemfile as your application's dependency declaration
use bundle install to install explicit versions of these dependencies into an isolated location
use bundle exe...
how to get the current working directory's absolute path from irb
...ssible from irb? Apparently from a script it's possible using File.expand_path(__FILE__)
6 Answers
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MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
...个students集合，集合中数据如下：
> db.students.find()
{ "_id" : ObjectId("5031143350f2481577ea81e5"), "classid" : 1, "age" : 20, "name" : "kobe" }
{ "_id" : ObjectId("5031144a50f2481577ea81e6"), "classid" : 1, "age" : 23, "name" : "nash" }
{ "_id" : ObjectId("5031145a50f2481577ea81...