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Why is Go so slow (compared to Java)?
...g them entirely (e.g. predicting virtual call destinations in JIT-compiled Java) starts to get tricky.
FWIW, my own very trivial test with Go when I was taking a look at it (a loop of integer addition, basically), gccgo produced code towards the fast end of the range between gcc -O0 and gcc -O2 for...
Convert InputStream to byte array in Java
...’s a simple solution without the need for a 3rd party library, thanks to Java 9:
InputStream is;
…
byte[] array = is.readAllBytes();
Note also the convenience methods readNBytes(byte[] b, int off, int len) and transferTo(OutputStream) addressing recurring needs.
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How to check if a specified key exists in a given S3 bucket using Java
I would like to check if a key exists in a given bucket using Java. I looked at the API but there aren't any methods that are useful. I tried to use getObject but it threw an exception.
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What is the difference between public, protected, package-private and private in Java?
In Java, are there clear rules on when to use each of access modifiers, namely the default (package private), public , protected and private , while making class and interface and dealing with inheritance?
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Good Java graph algorithm library? [closed]
Has anyone had good experiences with any Java libraries for Graph algorithms. I've tried JGraph and found it ok, and there are a lot of different ones in google. Are there any that people are actually using successfully in production code or would recommend?
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What is float in Java?
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In Java, when you type a decimal number as 3.6, its interpreted as a double. double is a 64-bit precision IEEE 754 floating point, while floatis a 32-bit precision IEEE 754 floating point. As a float is less precise than a doub...
Java8 Lambdas vs Anonymous classes
Since Java8 has been recently released and its brand new lambda expressions looks to be really cool, I was wondering if this means the demise of the Anonymous classes that we were so used to.
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上海选出最强\"加班楼\" 恒隆广场居首位 - 创意 - 清泛网 - 专注C/C++及内核技术
...楼、外滩中心、世纪商贸广场位居前三名。发起这一活动的滴滴专车平台昨天表示，后台大数据分析显示，相关地区有很多用户在深更半夜叫车回家，基本都是加班族。
这一覆盖北上广深的“加班楼”票选活动，这几天在网上...
一个孩子的5.28日记 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
一个孩子的5.28日记上午10:30，爸爸说，儿童节出国旅行计划没了；下午1:30，爸爸说，儿童节礼物也没了；下午3:30，妈妈说，爸爸没了…珍爱生命，不许跳楼！！！！上午10:30，爸爸说，儿童节出国旅行计划没了；
下午1:30，爸...
让人瞠目结舌的七大互联网+奇葩路线 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
让人瞠目结舌的七大互联网+奇葩路线传统企业都想搭互联网+顺风车，然而疯狂改名、大跨界投资等，好像为互联网+蒙上了一层恶搞意味。
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