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Spring MVC: How to perform validation?
I would like to know what is the cleanest and best way to perform form validation of user inputs. I have seen some developers implement org.springframework.validation.Validator . A question about that: I saw it validates a class. Does the class have to be filled manually with the values from the us...
How to use putExtra() and getExtra() for string data
Can someone please tell me how exactly to use getExtra() and putExtra() for intents? Actually I have a string variable, say str, which stores some string data. Now, I want to send this data from one activity to another activity.
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Is it possible to display inline images from html in an Android TextView?
...play as a generic replacement image which your program can then go through and replace with real images.
If you don't want to do this replacement yourself you can use the other Html.fromHtml() method which takes an Html.TagHandler and an Html.ImageGetter as arguments as well as the text to parse.
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Is there a way to automatically build the package.json file for Node.js projects
...rogram like npm just look through the files, see the "require" statements, and then use that to put the necessary entries in the package.json file? Are there any programs like that?
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What is the difference between MediaPlayer and VideoView in Android
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Was asking the same question and as I understood from what Mark (CommonsWare) advised on numerous threads here, VideoView is a wrapper (200 hundred lines of code) for MediaPlayer and SurfaceView to provide embedded controls.
He also kindly shared some e...
Once upon a time, when > was faster than < … Wait, what?
...tc. He also explains that the actual meaning of depth values (which is top and which isn't) can also be customized. I understand so far. And then the author says something unbelievable:
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Rails: call another controller action from a controller
...e
To just render the new action :
redirect_to your_controller_action_url and return
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fetch in git doesn't get all branches
...ated a new branch, which I'd like to start working on. I read the manual, and it seems dead straight easy. Strangely it's not working, and all the posts I've found suggest I'm doing the right thing. So I'll subject myself to the lambasting, because there must be something obviously wrong with t...
How to unload a package without restarting R
...ating, but conceivably this could be used in a program to use one function and then another--although namespace referencing is probably a better idea for that use).
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Meaning of Open hashing and Closed hashing
... some sort of open addressing strategy. This explains why "closed hashing" and "open addressing" are synonyms.
Contrast this with open hashing - in this strategy, none of the objects are actually stored in the hash table's array; instead once an object is hashed, it is stored in a list which is sep...