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Spring MVC: How to perform validation?
...o is the reference implementation (this library has nothing to do with databases and relational mapping, it just does validation :-).
Then in your controller you would have something like :
@RequestMapping(value="/user", method=RequestMethod.POST)
public createUser(Model model, @Valid @ModelAttrib...
How to set the font size in Emacs?
...ault will allow you to set the face default face, on which all other faces base on. There you can set the font-size.
Here is what is in my .emacs. actually, color-theme will set the basics, then my custom face setting will override some stuff. the custom-set-faces is written by emacs's customize-fa...
Setting git parent pointer to a different parent
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Using git rebase. It's the generic "take commit(s) and plop it/them on a different parent (base)" command in Git.
Some things to know, however:
Since commit SHAs involve their parents, when you change the parent of a given commit, its...
Padding or margin value in pixels as integer using jQuery
...are that parseInt can return NaN (which then in turn make the calculations based on that variable fail) - add a isNaN check afterwards! Example case: parseInt('auto', 10); (auto is a valid margin-left).
– Thomas
Mar 22 '12 at 16:40
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Copying text to the clipboard using Java
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For JavaFx based applications.
//returns System Clipboard
final Clipboard clipboard = Clipboard.getSystemClipboard();
// ClipboardContent provides flexibility to store data in different formats
final Cli...
How can I print the contents of a hash in Perl?
...hl. Sorry, still not understanding. You're saying that each is ~30% slower based on what? Is everytime, for every situation, a gap of 30% ?
– Carlos Sá
Nov 24 '17 at 11:47
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Solving “Who owns the Zebra” programmatically?
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Here's a solution in Python based on constraint-programming:
from constraint import AllDifferentConstraint, InSetConstraint, Problem
# variables
colors = "blue red green white yellow".split()
nationalities = "Norwegian German Dane Swede Engli...
How can I perform a `git pull` without re-entering my SSH password?
... If you use a password (not a passphrase with key file) for an SSH-based URL of a remote Git repo, you cannot save the password at all. But I noticed that after issuing any git command, you can immediately type the password and press Enter. You don't need to wait for the password prompt to a...
Mac OS X Terminal: Map option+delete to “backward delete word”
...apping ⌥⌫ to what esc⌫ is doing and you keep having ^W to erase word based on space delimiter.
I would love to be able to post an image on how do this but as a newbies I can't.
refer to bouke comment to see how to modify terminal profile.
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How can I use Timer (formerly NSTimer) in Swift?
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As of iOS 10 there is also a new block based Timer factory method which is cleaner than using the selector:
_ = Timer.scheduledTimer(withTimeInterval: 5, repeats: false) { timer in
label.isHidden = true
}
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