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Should a retrieval method return 'null' or throw an exception when it can't produce the return value
... in regards to something like a repository pattern for example. Is it typically considered exceptional for an object not to exist given a primary key? Yes, that is something his domain will determine, but what do most experts with years of experience suggest? That's the type of answer we should see....
When to use a Content Provider
I understand that Content Providers are made to allow publicly sharing data between applications. However, I'm wondering if anyone has thoughts about making a Content Provider to use just within your own app. Would there be any advantages to doing this? Any disadvantages?
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What is the difference between and ?
...is a thematic grouping of content. Each section should be identified, typically by including a heading (h1-h6 element) as a child of the <section> element.
Examples of sections would be chapters, the various tabbed pages in a tabbed dialog box, or the numbered sections of a thesis. A Web site...
How can I be notified when an element is added to the page?
...t being inserted here,
// or a particular node being modified
// call the function again after 100 milliseconds
setTimeout( checkDOMChange, 100 );
}
Once this function is called, it will run every 100 milliseconds, which is 1/10 (one tenth) of a second. Unless you need real-time elemen...
Is a Java string really immutable?
We all know that String is immutable in Java, but check the following code:
15 Answers
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Performance of Java matrix math libraries? [closed]
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Using Jama with Java, the time taken was 50 seconds.
Using Colt and Parallel Colt with Java, the time taken was 150 seconds!
Using JBLAS with Java, the time taken was again around 4 seconds as JBLAS uses multithreaded ATLAS.
So for me it was clear that the Java libraries didn't perform too wel...
Performing regex Queries with pymongo
... :
db.collectionname.find({'files':{'$regex':'^File'}})
This will match all documents that have a files property that has a item within that starts with File
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How to Right-align flex item?
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Thanks. Would you personally prefer this over Yohann Tilotti's display table method above? If so, why?
– Mark Boulder
Mar 16 '14 at 4:19
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Is SecureRandom thread safe?
... initializing a SecureRandom can not only be slow, but can potentially hang because of missing entropy
– Walter Tross
Jul 25 '14 at 9:37
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How do I move a Git branch out into its own repository?
...have a branch that I'd like to move into a separate Git repository, and ideally keep that branch's history in the process. So far I've been looking at git filter-branch , but I can't make out whether it can do what I want to do.
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