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Using the Swift if let with logical AND operator &&
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As of Swift 1.2, this is now possible. The Swift 1.2 and Xcode 6.3 beta release notes state:
More powerful optional unwrapping with if let — The if let construct
can now unwrap multiple optionals at once, as well as include
intervenin...
How do I resolve a HTTP 414 “Request URI too long” error?
...eloped a PHP web app. I am giving an option to the user to update multiple issues on one go. In doing so, sometimes the user is encountering this error. Is there any way to increase the lenght of URL in apache?
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Show loading image while $.ajax is performed
... just wondering how to show an image that indicates that the async request is running. I use the following code to perform a async request:
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Set Focus on EditText
I have an EditText-Field and set an OnFocusChangeListener for it. When it has lost focus, a method is called, which checks the value of the EditText with one in the database. If the return-value of the method is true, a toast is shown and the focus should get back on the EditText again. The focus sh...
How to pass a function as a parameter in Java? [duplicate]
...oSomething(int param1, String param2);
}
then anywhere where MyInterface is used, you can substitute a lambda expression:
class MyClass {
public MyInterface myInterface = (p1, p2) -> { return p2 + p1; };
}
For example, you can create a new thread very quickly:
new Thread(() -> someMe...
How to convert List to int[] in Java? [duplicate]
This is similar to this question:
How to convert int[] to Integer[] in Java?
16 Answers
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Immutability of Strings in Java
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str is not an object, it's a reference to an object. "Hello" and "Help!" are two distinct String objects. Thus, str points to a string. You can change what it points to, but not that which it points at.
Take this code, for exampl...
“The run destination iOS Device is not valid for running the scheme”
...try to run it on an iPhone 4S / iOS6 I get "The run destination iOS Device is not valid for running the scheme NN. The Scheme contains no buildables that can be built for the architectures supported by the run designation device".
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How to Select Every Row Where Column Value is NOT Distinct
...o run a select statement that returns all rows where the value of a column is not distinct (e.g. EmailAddress).
7 Answers
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A beginner's guide to SQL database design [closed]
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I started with this book: Relational Database Design Clearly Explained (The Morgan Kaufmann Series in Data Management Systems) (Paperback) by Jan L. Harrington and found it very clear and helpful
and as you get up to speed this one was good...