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How do you query for “is not null” in Mongo?
...: 1 }
{ "_id" : ObjectId("544540f11b5cf91c4893eb99"), "otherField" : 2 }
Now, create the sparse index on imageUrl field:
db.foo.ensureIndex( { "imageUrl": 1 }, { sparse: true } )
{
"createdCollectionAutomatically" : false,
"numIndexesBefore" : 1,
"numIndexesAfter" : 2,
"ok" : 1
}
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pass **kwargs argument to another function with **kwargs
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now I get it. I thought keywords and dict were the same thing.
– user945967
Mar 26 '12 at 6:41
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Evenly space multiple views within a container view
..., so until your app needs support for IOS8 @Mete response is the best for now.
– ZiggyST
Feb 24 '16 at 17:06
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unit testing of private functions with mocha and node.js
... or something else that can communicate to the module "you're being tested now". The instances where I've had to do this were in a RequireJS environment, and I've used module.config for this purpose.
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How can I get a list of locally installed Python modules?
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Now, these methods I tried myself, and I got exactly what was advertised: All the modules.
Alas, really you don't care much about the stdlib, you know what you get with a python install.
Really, I want the stuff that I i...
What is sharding and why is it important?
... advantage would be that search load for the
large partitioned table can now be split across multiple servers
(logical or physical), not just multiple indexes on the same logical
server.
Also,
Splitting shards across multiple isolated instances requires more than
simple horizontal part...
How to make a Java thread wait for another thread's output?
...ods themselves synchronized):
private final Object lock = new Object();
//now use lock in your synchronized blocks
To further your understanding:
There are other (sometimes better) ways to do the above, e.g. with CountdownLatches, etc. Since Java 5 there are a lot of nifty concurrency classes in ...
Why are dates calculated from January 1st, 1970?
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Do you know if Kernighan and Thompson every expressed a reason for choosing that moment beyond "It's a round number slightly before we started building the thing."?
– dmckee --- ex-moderator kitten
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Custom domain for GitHub project pages
...tells GitHub to use this repo to handle traffic to this domain.
4. Wait
Now wait 5 minutes, your project page should now be live.
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AngularJS: Understanding design pattern
...-click="collapsed = !collapsed"
It pretty much signify any developer that now to understand how the system work they need to inspect both the Javascript files, and the HTML ones.
Controllers
Do:
Bind the view to the 'model' by placing data on the scope.
Respond to user actions.
Deal with presentat...