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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 do I check if a string contains another string in Objective-C?
...");
}
The key is noticing that rangeOfString: returns an NSRange struct, and the documentation says that it returns the struct {NSNotFound, 0} if the "haystack" does not contain the "needle".
And if you're on iOS 8 or OS X Yosemite, you can now do: (*NOTE: This WILL crash your app if this code ...
How to print from GitHub
...ne of code in the URL field.
If you now go to a Markdown page on Github and click the bookmark it will reformat the page and change the CSS so that it looks the same as on screen when you print. Now just print the page.
Bookmarklet contents:
javascript:(function(e,a,g,h,f,c,b,d)%7Bif(!(f=e.jQue...
npm global path prefix
...Homebrew).
So:
npm config set prefix /usr/local if it's something else, and
Don't use sudo with npm! According to the jslint docs, you should just be able to npm install it.
If you installed npm as sudo (sudo brew install), try reinstalling it with plain ol' brew install. Homebrew is supposed t...
python-pandas and databases like mysql
The documentation for Pandas has numerous examples of best practices for working with data stored in various formats.
13 An...
Change Bootstrap input focus blue glow
..., 0.075), 0 0 8px rgba(255, 0, 0, 0.6);
}
Put it in your custom css file and load it after bootstrap.css. It will apply to all inputs including textarea, select etc...
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how to get request path with express req object
I'm using express + node.js and I have a req object, the request in the browser is /account but when I log req.path I get '/' --- not '/account'.
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Is assert evil? [closed]
...g cases that "can't happen", during debugging, as opposed to normal error handling.
Assert: A failure in the program's logic itself.
Error Handling: An erroneous input or system state not due to a bug in the program.
shar...
Reverse / invert a dictionary mapping
...g aspect of this new implementation is considered an implementation detail and should not be relied upon. There is no guarantee it will stay that way so don't write code relying on Dict having the same behavior as OrderedDict.
– Mattias
Aug 26 '18 at 17:44
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Convert object string to JSON
...would be much better to just encode the object in valid JSON to begin with and avoid having to parse, encode, then presumably parse it again. HTML supports single-quoted attributes (just be sure to HTML-encode any single quotes inside strings).
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