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Difference between declaring variables before or in loop?
...etter, a or b?
From a performance perspective, you'd have to measure it. (And in my opinion, if you can measure a difference, the compiler isn't very good).
From a maintenance perspective, b is better. Declare and initialize variables in the same place, in the narrowest scope possible. Don't leave...
Lombok added but getters and setters not recognized in Intellij IDEA
I am using IntelliJ IDEA on ubuntu. I added lombok.jar into my project and installed the Lombok plugin for IDEA. I have access to the annotations but the getters and setters aren't generated. I get the same errors I would get if I tried accessing a getter or setter method that doesn't exist. W...
Objective-C declared @property attributes (nonatomic, copy, strong, weak)
...ail when I must use each attribute: nonatomic , copy , strong , weak , and so on, for a declared property, and explain what each does? Some sort of example would be great also. I am using ARC.
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Status bar and navigation bar appear over my view's bounds in iOS 7
...ownloaded Xcode 5 DP to test my apps in iOS 7. The first thing I noticed and confirmed is that my view's bounds is not always resized to account for the status bar and navigation bar.
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What would cause an algorithm to have O(log log n) complexity?
... 16
16 / 2 = 8
8 / 2 = 4
4 / 2 = 2
2 / 2 = 1
This process takes 16 steps, and it's also the case that 65,536 = 216.
But, if we take the square root at each level, we get
√65,536 = 256
√256 = 16
√16 = 4
√4 = 2
Notice that it only takes four steps to get all the way down to 2. Why is this?...
Provide an image for WhatsApp link sharing
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2020 standards
It takes a few steps to get the perfect preview for WhatsApp, Twitter, Facebook and bookmark icons for pc's and mobile devices. If you like reading go to ogp.me - but make sure to read steps 1 - 6 in this answer to ge...
What is the difference between .text, .value, and .value2?
What is the difference between .text , .value , and .value2 ? Such as when should target.text, target.value, and target.value2 be used?
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Redis: possible to expire an element in an array or sorted set?
...tire key/value pair? What if I want to add values to a List type structure and have them get auto removed 1 hour after insertion. Is that currently possible, or would it require running a cron job to do the purging manually?
...
Array.Copy vs Buffer.BlockCopy
Array.Copy and Buffer.BlockCopy both do the same thing, but BlockCopy is aimed at fast byte-level primitive array copying, whereas Copy is the general-purpose implementation. My question is - under what circumstances should you use BlockCopy ? Should you use it at any time when you are copyi...
How to create a UIView bounce animation?
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With iOS7 and UIKit Dynamics, there is no longer any need to use CAKeyframeAnimations or UIView animations!
Take a look at Apple's UIKit Dynamics Catalog app. Alternately, Teehanlax has a clear, concise tutorial with the full project ...