stdmap

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Can't create map of MoveConstructibles

I have a class containing a std::unique_ptr<> and I want to put instances of this class inside of an std::map<>. I thought one of the things that motivated the introduction of move semanti[详细]

2022-12-20 07:44 分类：问答
Getting a random number between 0 and 0.06 in Java?

How do you get random Double values between 0.0 and 0.06 in Ja开发者_如何学编程va?nextDouble() returns a random floating-point number uniformly distributed between 0 and 1. Simply scale the result as[详细]

2022-12-19 11:56 分类：问答
Is it impossible to use an STL map together with a struct as key?

I have the followin开发者_JAVA百科g code: struct Node { int a; int b; }; Node node; node.a = 2; node.b = 3;[详细]

2022-12-19 04:07 分类：问答
0.02是多少钱啊？0.02元是多少角？

Q北雁南回Q 开发者_如何学JAVA 2022-05-29 22:11 这个题就是把小数变为分数,0.2可以看做0.2/1,分子分母各乘以10,得出2/10,约分除以5,得出1/5元,0.2元就是2角,希望没有误导你。上课注意听讲,其实每[详细]

2022-12-18 21:10 分类：问答
Using Java in the Gadget specification xml instead of javascript

How do I develop apps that run on Orku开发者_C百科t.com using the OpenSocial java client libraries? I have read the OpenSocial tutorial for Orkut, and[详细]

2022-12-18 06:25 分类：问答
Is there any generic vesion of HashTable?

I need a cl开发者_Python百科ass that will work like C++ std::map. More specifically, I need such a behavior:[详细]

2022-12-14 16:34 分类：问答
How to get the first n elements of a std::map

Since there is no .resize() member function in C++ std::map I was wondering, how one can get a std::map with at most n elements.[详细]

2022-12-12 13:01 分类：问答
Why does std::map operator[] create an object if the key doesn't exist?

I\'m pretty sure I already saw this question somewhere (comp.lang.c++? Google doesn\'t seem to find it there either), but a quick search here doesn\'t seem to find it, so here it is:[详细]

2022-12-09 21:48 分类：问答