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Explain the use of a bit vector for determining if all characters are unique
I am confused about how a bit vector would work to do this (not too familiar with bit vectors). Here is the code given. Could someone please walk me through this?
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json_decode to array
I am trying to decode a JSON string into an array but i get the following error.
12 Answers
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Java - get the current class name?
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The "$1" is not "useless non-sense". If your class is anonymous, a number is appended.
If you don't want the class itself, but its declaring class, then you can use getEnclosingClass(). For example:
Class<?> enclosingClass = getClass().getEnclosingClass();
if (enclosingClass != null) {
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Invoking JavaScript code in an iframe from the parent page
Basically, I have an iframe embedded in a page and the iframe has some JavaScript routines I need to invoke from the parent page.
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Can Maven be made less verbose?
... edited Aug 30 at 1:57
Sergey Brunov
11.4k77 gold badges3535 silver badges6969 bronze badges
answered Sep 16 '08 at 10:37
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Implementing two interfaces in a class with same method. Which interface method is overridden?
Two interfaces with same method names and signatures. But implemented by a single class then how the compiler will identify the which method is for which interface?
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Can a program depend on a library during compilation but not runtime?
I understand the difference between runtime and compile-time and how to differentiate between the two, but I just don't see the need to make a distinction between compile-time and runtime dependencies .
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How to find a min/max with Ruby
... min(5,10) , or Math.max(4,7) . Are there functions to this effect in Ruby?
6 Answers
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C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...Segmentation fault）Segment fault 之所以能够流行于世，是与Glibc库中基本上所有的函数都默认形参指针为非空有着密切关系的。目录1。什么是段错误？2。为什 Segment fault 之所以能够流行于世，与Glibc库中基本上所有的函数都默认形...
Anatomy of a “Memory Leak”
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The best explanation I've seen is in Chapter 7 of the free Foundations of Programming e-book.
Basically, in .NET a memory leak occurs when referenced objects are rooted and thus cannot be garbage collected. This occurs accidenta...