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ActiveMQ or RabbitMQ or ZeroMQ or [closed]
...velopes are quite big.
ZeroMq is a very lightweight messaging system specially designed for high throughput/low latency scenarios like the one you can find in the financial world. Zmq supports many advanced messaging scenarios but contrary to RabbitMQ, you’ll have to implement most of them yourse...
Android代码优化小技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...解为Foo[]与Bar[]要比(Foo,Bar)好很多。(当然，为了某些好的API的设计，可以适当做一些妥协。但是在自己的代码内部，你应该多多使用分解后的容易。
通常来说，需要避免创建更多的对象。更少的对象意味者更少的GC动作，GC会对...
jquery if div id has children
...children().length should be called instead of size() per jQuery docs here: api.jquery.com/size
– Brian Chavez
May 7 '11 at 5:06
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What is the difference between 'log' and 'symlog'?
...
I finally found some time to do some experiments in order to understand the difference between them. Here's what I discovered:
log only allows positive values, and lets you choose how to handle negative ones (mask or clip).
syml...
Best Practices: Salting & peppering passwords?
...e provable and make sense in order for it to be considered secure. Additionally, it has to be implementable in a maintainable way. The most secure system that can't be maintained is considered insecure (because if any part of that security breaks down, the entire system falls apart).
And peppers fi...
How do you log content of a JSON object in Node.js?
... console.log("Session: %O", session); developer.mozilla.org/en-US/docs/Web/API/…
– JP Lew
Jun 12 '19 at 22:02
Worked...
Build a Basic Python Iterator
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Iterator objects in python conform to the iterator protocol, which basically means they provide two methods: __iter__() and __next__().
The __iter__ returns the iterator object and is implicitly called
at the start of loops.
The __next__() method returns the next value and is implicitly cal...
What's the difference between and
...pect.
There are a few cases with generics where extends Object is not actually redundant. For example, <T extends Object & Foo> will cause T to become Object under erasure, whereas with <T extends Foo> it will become Foo under erasure. (This can matter if you're trying to retain com...
How do I get a file's directory using the File object?
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File API File.getParent or File.getParentFile should return you Directory of file.
Your code should be like :
File file = new File("c:\\temp\\java\\testfile");
if(!file.exists()){
file = file.getParentFile();
...
UIRefreshControl on UICollectionView only works if the collection fills the height of the container
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You must check in api call if collection view is in refreshing state then end refreshing to dismiss refreshing control.
private let refreshControl = UIRefreshControl()
refreshControl.tintColor = .white
refreshControl.addTarget(self, actio...