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How to listen for changes to a MongoDB collection?
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Since MongoDB 3.6 there will be a new notifications API called Change Streams which you can use for this. See this blog post for an example. Example from it:
cursor = client.my_db.my_collection.changes([
{'$match': {
'operationType': {'$in': ['insert', 'replace']}...
What's the best Django search app? [closed]
...arch - a new model based search abstraction layer that currently supports Xapian, Solr and Whoosh. Looks like it's well supported and documented.
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Update ViewPager dynamically?
...ragments. the default for these fragments to load the English content from API service but the problem here that i want to change the language from settings activity and after finish
settings activity i want ViewPager in main activity to refresh the fragments to match the language selection from th...
How can I increment a date by one day in Java?
... Apache. Check this http://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/time/DateUtils.html. It is handy especially when you have to use it multiple places in your project and would not want to write your one liner method for this.
The API says:
addDays(Date...
Node.js getaddrinfo ENOTFOUND
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In Node.js HTTP module's documentation: http://nodejs.org/api/http.html#http_http_request_options_callback
You can either call http.get('http://eternagame.wikia.com/wiki/EteRNA_Dictionary', callback), the URL is then parsed with url.parse(); or call http.get(options, callback), whe...
What is the meaning of symbol $ in jQuery?
... want to wrap with
the jQuery object.
Here is the documentation: https://api.jquery.com/jQuery/
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mysqli or PDO - what are the pros and cons? [closed]
... be one thing less to learn at that point.
Apart from that I find the PDO API a little more intuitive, and it feels more truly object oriented. mysqli feels like it is just a procedural API that has been objectified, if you know what I mean. In short, I find PDO easier to work with, but that is of ...
How to add one day to a date? [duplicate]
...rg.plusDays(1);
Solution 3: With Java 8 you can also use the new JSR 310 API (which is inspired by Joda-Time):
Date dt = new Date();
LocalDateTime.from(dt.toInstant()).plusDays(1);
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What could cause java.lang.reflect.InvocationTargetException?
...ws an exception.
So if the method, that has been invoked with reflection API, throws an exception (runtime exception for example), the reflection API will wrap the exception into an InvocationTargetException.
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Is there an advantage to use a Synchronized Method instead of a Synchronized Block?
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A benefit to the consumer of the API is that using the synchronized keyword in the method declaration also explicitly declares that the method synchronizes on the object instance and is (presumably) thread-safe.
– Scrubbie
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