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Android: How can I validate EditText input?
...lidated, I think the following shall suit you :
Your activity implements android.text.TextWatcher interface
You add TextChanged listeners to you EditText boxes
txt1.addTextChangedListener(this);
txt2.addTextChangedListener(this);
txt3.addTextChangedListener(this);
Of the overridden methods, y...
How to specify id when uses include in layout xml file
...out xml file, I have included other layout xml file (each
with a different android id).
11 Answers
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How to log a method's execution time exactly in milliseconds?
...Since(methodStart)
print("Execution time: \(executionTime)")
Easy to use and has sub-millisecond precision.
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How do I trigger the success callback on a model.save()?
The model is correctly posted to the server which handles the save, but the success callback is not fired. Do I need to send something back from the server ?
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ViewModel Best Practices
... called ViewModels in my MVC Web project. I name them after the controller and action (or view) they represent. So if I need to pass data to the SignUp view on the Membership controller I create a MembershipSignUpViewModel.cs class and put it in the ViewModels folder.
Then I add the necessary prope...
Why are exclamation marks used in Ruby methods?
...oo # prints modified foo
This will output:
a string
In the standard libraries, there are a lot of places you'll see pairs of similarly named methods, one with the ! and one without. The ones without are called "safe methods", and they return a copy of the original with changes applied...
Postgresql: Scripting psql execution with password
...ve/libpq-envars.html
There is no option to provide the password as a command line argument because that information is often available to all users, and therefore insecure. However, in Linux/Unix environments you can provide an environment variable for a single command like this:
PGPASSWORD=your...
Best way to concatenate List of String objects? [duplicate]
...() implementation.
While the implementation is documented in the Java API and very unlikely to change, there's a chance it could. It's far more reliable to implement this yourself (loops, StringBuilders, recursion whatever you like better).
Sure this approach may seem "neater" or more "too sweet" ...
JavaScript single line 'if' statement - best syntax, this alternative? [closed]
... brackets on a single line if statement is not ideal for maintainability and readability.
13 Answers
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Launch an app from within another (iPhone)
...app?, For example in my application if I want the user to push a button and launch right into the Phone app (close the current app, open the Phone app) .
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