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How expensive is RTTI?
...ally give any benchmarks or quantitative data reguarding memory, processor time, or speed.
11 Answers
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How to encode a URL in Swift [duplicate]
...nd one frequently used value is a reference to
another URI, it is sometimes better for usability to avoid percent-
encoding those characters.
Nowadays, you'd generally use URLComponents to percent escape the query value:
var address = "American Tourister, Abids Road, Bogulkunta, Hyderab...
CSS: How to position two elements on top of each other, without specifying a height?
...height back. But how can you do that if you don't know the height ahead of time? Well, if you know what aspect ratio you want to give the container (and keep it responsive), y
Case insensitive string as HashMap key
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Keep in mind that TreeMap is not constant time for basic operations. Not an issue for most applications, but worth keeping in mind. From JavaDoc: "This implementation provides guaranteed log(n) time cost for the containsKey, get, put and remove operations. Algorithms...
How to add google chrome omnibox-search support for your site?
... Adding search engines at chrome://settings/searchEngines is a time saver! Thanks!
– Esdras Lopez
Apr 2 '18 at 22:30
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泰迪熊为什么叫泰迪 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...配地瓜）。于是塔夫托说，“for possum first, last, and all the time”，这句话没看懂。但是塔夫托因为这句话被政治漫画家绘作一只负鼠，名为 Billy Possum（比利鼠）。
由于罗斯福和泰迪熊的巨大成功，玩具商们看准了这次商机，制...
applicationWillEnterForeground vs. applicationDidBecomeActive, applicationWillResignActive vs. appli
...o the background, while applicationDidBecomeActive: may be called multiple times after launch. This makes applicationWillEnterForeground: ideal for setup that needs to occur just once after relaunch.
applicationWillEnterForeground: is called:
when app is relaunched
before applicationDidBecomeAc...
Best way to concatenate List of String objects? [duplicate]
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Yup, every time: Bloch, "Effective Java", Item 47: "Know and use the libraries". The Apache Commons libraries should be the first thing to put in your build file (hopefully Gradle). As Item 47 concludes: "To summarize, don't reinvent ...
Getting the name of the currently executing method
...e();
However, a new anonymous inner class will be created during compile time (e.g. YourClass$1.class). So this will create a .class file for each method that deploys this trick. Additionally an otherwise unused object instance is created on each invocation during runtime. So this may be an accept...
DateTime vs DateTimeOffset
Currently, we have a standard way of dealing with .NET DateTime 's in a TimeZone aware way: Whenever we produce a DateTime we do it in UTC (e.g. using DateTime.UtcNow ), and whenever we display one, we convert back from UTC to the user's local time.
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