大约有 40,000 项符合查询结果（耗时：0.0494秒） [XML]
Delete a key from a MongoDB document using Mongoose
...hods that node-mongodb-native offers. So you can do the action in question by this:
User.collection.update({_id: user._id}, {$unset: {field: 1 }});
Since version 2.0 you can do:
User.update({_id: user._id}, {$unset: {field: 1 }}, callback);
And since version 2.4, if you have an instance of a m...
Android 'Unable to add window — token null is not for an application' exception
...o create Dialog using.
getApplicationContext()
mContext which is passed by activity.
if You displaying dialog non activity class then you have to pass activity as a parameter.
Activity activity=YourActivity.this;
Now it will be work great.
If you find any trouble then let me know.
...
Remove border from IFrame
... NOTE: frameborder attribute changes in F12 "debugger" will not be shown by IE6. Instead, add attribute in html code.
– user932567
Sep 7 '11 at 11:15
...
How do you change the datatype of a column in SQL Server?
... DataType. Very scary, so be careful (it may be a cache-bug that is fixed by now or one MS never bothers fixing). For those wondering why I ran T-SQL when I use Design-View, I wanted to alter my DataTypes to SysName (which SSMS does not allow).
– MikeTeeVee
A...
Where should I put the log4j.properties file?
...ally, I think the problem is from auto-deploy of netbeans. I try to deploy by war file in admin console, it's ok. I don't know if I was right. If I was right, why netbeans don't deploy these files when auto-deploy the project.
– mono
Sep 28 '09 at 16:30
...
How do I copy items from list to list without foreach?
...
Easy to map different set of list by linq without for loop
var List1= new List<Entities1>();
var List2= new List<Entities2>();
var List2 = List1.Select(p => new Entities2
{
EntityCode = p.EntityCode,
EntityId ...
How to implement static class member functions in *.cpp file?
...ber functions in *.cpp file. If you define it in the header, compiler will by default treat it as inline. However, it does not mean separate copies of the static member function will exist in the executable. Please follow this post to learn more about this:
Are static member functions in c++ copied...
JavaScript: Get image dimensions
...I think the problem is because the image has not been downloaded. I fixed by running the code which uses the dimension in the onload event handler like so: img.onload = function () {};
– Shumii
Dec 13 '13 at 14:34
...
Split string on the first white space occurrence
...
var arr = []; //new storage
str = str.split(' '); //split by spaces
arr.push(str.shift()); //add the number
arr.push(str.join(' ')); //and the rest of the string
//arr is now:
["72","tocirah sneab"];
but i still think there is a faster way though.
...
Date vs DateTime
...
The Date type is just an alias of the DateTime type used by VB.NET (like int becomes Integer). Both of these types have a Date property that returns you the object with the time part set to 00:00:00.
share
...