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How to Correctly handle Weak Self in Swift Blocks with Arguments
...k self].
If self will never be nil in the closure use [unowned self].
If it's crashing when you use [unowned self] I would guess that self is nil at some point in that closure, which is why you had to go with [weak self] instead.
I really liked the whole section from the manual on using strong, ...
INSTALL_FAILED_UPDATE_INCOMPATIBLE when I try to install compiled .apk on device
I've compiled Trebuchet launcher from CyanogenMod 9, and trying to install it with adb:
29 Answers
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Is SHA-1 secure for password storage?
...onclusion: SHA-1 is as safe as anything against preimage attacks, however it is easy to compute, which means it is easier to mount a bruteforce or dictionary attack. (The same is true for successors like SHA-256.) Depending on the circumstances, a hash function which was designed to be computationa...
Are arrays passed by value or passed by reference in Java? [duplicate]
Arrays are not a primitive type in Java, but they are not objects either , so are they passed by value or by reference? Does it depend on what the array contains, for example references or a primitive type?
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What is a lambda (function)?
For a person without a comp-sci background, what is a lambda in the world of Computer Science?
23 Answers
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Binding multiple events to a listener (without JQuery)?
While working with browser events, I've started incorporating Safari's touchEvents for mobile devices. I find that addEventListener s are stacking up with conditionals. This project can't use JQuery.
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Android List View Drag and Drop sort
...e seen this implemented in other apps, but I have not found a tutorial for it. It must be something that others need as well. Can anyone point me to some code for doing this?
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Get elements by attribute when querySelectorAll is not available without using libraries?
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You could write a function that runs getElementsByTagName('*'), and returns only those elements with a "data-foo" attribute:
function getAllElementsWithAttribute(attribute)
{
var matchingElements = [];
var allElements = document.get...
Why is using onClick() in HTML a bad practice?
...JavaScript events, such as onClick() , in HTML is a bad practice, because it's not good for semantics. I would like to know what the downsides are and how to fix the following code?
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Get size of folder or file
...ectory.listFiles() may return null and cause a NullPointerException. Also, it doesn't consider symlinks and possibly has other failure modes. Use this method.
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