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MongoDb query condition on comparing 2 fields
...o execute Javascript code on every record) so combine with indexed queries if you can.
db.T.find( { $where: function() { return this.Grade1 > this.Grade2 } } );
or more compact:
db.T.find( { $where : "this.Grade1 > this.Grade2" } );
UPD for mongodb v.3.6+
you can use $expr as described in re...
Replace line break characters with in ASP.NET MVC Razor view
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Oh my GOD, no. What if I decide to comment about some <script>.
– Darin Dimitrov
Nov 18 '10 at 22:49
4
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What is the difference between exit(0) and exit(1) in C?
Can anyone tell me? What is the difference between exit(0) and exit(1) in C language?
11 Answers
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Access object child properties using a dot notation string [duplicate]
...ar arr = desc.split(".");
while(arr.length && (obj = obj[arr.shift()]));
return obj;
}
console.log(getDescendantProp(r, "b.b2"));
//-> 99
Although there are answers that extend this to "allow" array index access, that's not really necessary as you can just specify numerical ind...
What is the difference between pull and clone in git?
What is the difference between doing (after mkdir repo and cd repo ):
11 Answers
11...
java SSL and cert keystore
How does my java program know where my keystore containing the certificate is? Or alternatively how do I tell my java program where to look for the keystore?
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SVN needs-lock 设置强制只读属性（官方资料） - 环境配置 - 清泛IT论坛，...
Automatic lock-modify-unlock
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Different versions of binary files cannot be merged. Therefore versioning of binary files should follow the lock-modify-unlock model[1]. This setup uses the following three measuresforces users to use property svn:...
Swift - encode URL
If I encode a string like this:
17 Answers
17
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UITableViewCell subview disappears when cell is selected
...oundColor;
[super setSelected:selected animated:animated];
if (selected){
self.yourView.backgroundColor = color;
}
}
-(void)setHighlighted:(BOOL)highlighted animated:(BOOL)animated{
UIColor *color = self.yourView.backgroundColor;
[super setHighlighted:hig...
What are CN, OU, DC in an LDAP search?
...nit
DC = Domain Component
These are all parts of the X.500 Directory Specification, which defines nodes in a LDAP directory.
You can also read up on LDAP data Interchange Format (LDIF), which is an alternate format.
You read it from right to left, the right-most component is the root of the tree...