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How to use BigInteger?
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BigInteger is immutable. The javadocs states that add() "[r]eturns a BigInteger whose value is (this + val)." Therefore, you can't change sum, you need to reassign the result of the add method to sum variable.
sum = sum.add(BigInteger.valueOf(i));
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Why are regular expressions so controversial? [closed]
...g. That's why you have to carefully tune your regular expressions in Perl, Java, Python, Ruby… Old-style regular expression engines (in grep, for example) first compile the pattern to a DFA. Afterwards, the complexity of the pattern is largely irrelevant. I just used Java and grep for the same tex...
Scala: What is a TypeTag and how do I use it?
...e == or !=, unless you absolutely know what you do:
scala> typeOf[List[java.lang.String]] =:= typeOf[List[Predef.String]]
res71: Boolean = true
scala> typeOf[List[java.lang.String]] == typeOf[List[Predef.String]]
res72: Boolean = false
The latter checks for structural equality, which often...
How to get the URL without any parameters in JavaScript?
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@Vishal--JAVA--CQ "better" is subjective, but it's simpler.
– Oddman
May 23 at 3:34
add a comment
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Are Exceptions in C++ really slow
.....finally construct can be implemented without stack unwinding. F#, C# and Java all implement try..finally without using stack unwinding. You just longjmp to the handler (as I already explained).
– J D
Mar 20 '14 at 21:37
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谈谈创业公司技术的工作模式 - 资讯 - 清泛网 - 专注C/C++及内核技术
...环境测试是为了提供研发速度和效率。大家都知道如果是java开发，部署war不断reload会影响他人的工作，如果工程比较大启动也比较慢。如果在本机，只是修改类里面的东西和jsp等直接就可以看到效果。修改类签名和增加类等需...
How do I find where an exception was thrown in C++?
... -1 You do not throw new excation(...) but throw exception(...) C++ is not Java,
– Artyom
Mar 14 '10 at 19:53
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Regex - Should hyphens be escaped? [duplicate]
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A very useful answer. Turns out that in Eclipse Luna, the Java Linter will complain if you try to escape it.
– Keab42
Nov 19 '14 at 12:51
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windows异常处理 __try __except - C/C++ - 清泛网 - 专注C/C++及内核技术
...，后三个参数基本不用
SEH异常处理还有try-finally.类似于java里的try-catch-finally.但是SEH的try只能和except和finally两者之间的一个搭配，不能有try-except-finnaly.
C++异常模型用try-catch语法定义，而SEH异常模型则用try-except语法,与C++异常...
Number.sign() in javascript
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Should this not support JavaScript’s (ECMAScript’s) signed zeroes? It seems to work when returning x rather than 0 in the “megafast” function:
function sign(x) {
return typeof x === 'number' ? x ? x < 0 ? -1 : 1 : x === x ? x : NaN :...