大约有 30,000 项符合查询结果（耗时：0.0359秒） [XML]
Is there a JSON equivalent of XQuery/XPath?
...I can used to find an item in [0].objects where id = 3?
I'll assume this means: find all JSON objects under the specified key with id == 3, no matter where the object may be. A corresponding jq query would be:
.[0].objects | .. | objects | select(.id==3)
where "|" is the pipe-operator (as in c...
mongodb/mongoose findMany - find all documents with IDs listed in array
...
The find function in mongoose is a full query to mongoDB. This means you can use the handy mongoDB $in clause, which works just like the SQL version of the same.
model.find({
'_id': { $in: [
mongoose.Types.ObjectId('4ed3ede8844f0f351100000c'),
mongoose.Types.ObjectId...
How can I read a text file in Android?
...d the text from a text file. In the code below, an exception occurs (that means it goes to the catch block). I put the text file in the application folder. Where should I put this text file (mani.txt) in order to read it correctly?
...
HTTP GET with request body
...for GET, however, are restricted such that a body, if any, has no semantic meaning to the request. The requirements on parsing are separate from the requirements on method semantics.
So, yes, you can send a body with GET, and no, it is never useful to do so.
This is part of the layered design of HTT...
efficient way to implement paging
...will be using exclusively the index to create the data access window; this means, if you need some filtering, the filtering should be (or must be) in the Entity listing (where the row is created) and some indexes should be created as well to keep up the good performance.
Now, whats better?
If you ...
What is cardinality in MySQL?
...avigating less branches to get data.
Therefore higher cordinality values mean:
better performance of read-queries;
bigger database size;
worse performance of write-queries, because hidden index data is being updated.
sh...
Is it possible to set the stacking order of pseudo-elements below their parent element? [duplicate]
...
I am not sure what you mean by #parent and #pseudo-parent, do you mind to show me a jsFiddle? or any example, thanks anyway.
– adardesign
Jan 31 '12 at 14:49
...
What's the Hi/Lo algorithm?
... and then fetching them back onto the client. Aside from anything else, it means you can easily make parent/child relationships and have the keys all in place before you do any inserts, which makes batching them simpler.
sha...
Grouped LIMIT in PostgreSQL: show the first N rows for each group?
...
That's exactly what I mean: 8.3 neither had CTEs nor windowing functions. So the first solution won't work on 8.3
– a_horse_with_no_name
Dec 7 '12 at 21:05
...
Custom toast on Android: a simple example
...check for that TextView should be there, just to be safe and by a check, I mean a null check or a type check. Just in case, google decides to change the id or view for showing text in Toast class. Anyway... +1
– DroidDev
May 24 '15 at 6:07
...