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What's the difference between Spring Data's MongoTemplate and MongoRepository?
...write an application with which I can do complex queries using spring-data and mongodb. I have been starting by using the MongoRepository but struggled with complex queries to find examples or to actually understand the Syntax.
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Foreign keys in mongo?
...ly, in a NoSQL database it is up to you to decide how to organise the data and its relations, if there are any.
What Mongoid and MongoMapper do is to provide you with convenient methods to set up relations quite easily. Check out the link I gave you and ask any thing.
Edit:
In mongoid you will wr...
Problems with Android Fragment back stack
I've got a massive problem with the way the android fragment backstack seems to work and would be most grateful for any help that is offered.
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Is SHA-1 secure for password storage?
...") under the assumption that many user passwords will be in that specially selected space.
Hence salting will at least prevent the attacker from using pre-computed tables, in particular pre-computed rainbow tables. This assumes that the attacker will be able to break one password or two; we do not ...
Android and setting alpha for (image) view alpha
...n. The alternative is to use View.setAlpha(float) whose XML counterpart is android:alpha. It takes a range of 0.0 to 1.0 instead of 0 to 255. Use it e.g. like
<ImageView android:alpha="0.4">
However, the latter in available only since API level 11.
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How to start new activity on button click
In an Android application, how do you start a new activity (GUI) when a button in another activity is clicked, and how do you pass data between these two activities?
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How to add a button to PreferenceScreen
Is there any way to add a button to the bottom of preferences screen and make them work correct when scrolling?
12 Answers
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In Markdown, what is the best way to link to a fragment of a page, i.e. #some_id?
...p (for example in a header:
## heading<a name="headin"></a>
and link to it using the markdown linkage:
[This is the link text](#headin)
or
[some text](#sometext)
Don't use <div> -- this will mess up the layout for many renderers.
(I have changed id= to name= above. See th...
How do I get Windows to go as fast as Linux for compiling C++?
...ss to Windows source code, it is rarely taken advantage of). Look at this selection of Unix-related performance papers: http://www.eecs.harvard.edu/margo/papers/ or look up the history of papers by Osterhaus, Henry Spencer, or others. Heck, one of the biggest (and most enjoyable to watch) debates i...
How can I know if a process is running?
...e curly braces to indicate the block statement. This also goes for foreach and for statements. It boils down to coding style.
– Hallmanac
Nov 24 '15 at 1:36
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