我无法在Macbook上安装CoffeeScript.相同的命令在我的iMac上运行正常.
$ surganov:~ surganov$ sudo npm install coffee-script -g
npm http GET https://registry.npmjs.org/coffee-script
npm http 304 https://registry.npmjs.org/coffee-script
/usr/local/share/npm/bin/coffee -> /usr/local/share/npm/lib/node_modules/coffee-script/bin/coffee
/usr/local/share/npm/bin/cake -> /usr/local/share/npm/lib/node_modules/coffee-script/bin/cake
coffee-script@1.3.3 /usr/local/share/npm/lib/node_modules/coffee-script
$ surganov:~ surganov$ coffee
-bash: coffee: command not found
Run Code Online (Sandbox Code Playgroud) 我有一个非常大的std :: vector std :: vectors,它包含固定数量的无符号整数.
所有uint向量都按升序排序.
我目前消除重复向量的方法是
unsigned int i = 0;
while ( i < new_combs.size() )
{
unsigned int j = i + 1;
while ( j < new_combs.size() )
{
unsigned int k = 0;
while ( k < new_combs.at(i).size() && new_combs.at(i).at(k) == new_combs.at(j).at(k) )
++k;
if ( k == new_combs.at(j).size() )
new_combs.erase(new_combs.begin() + j);
else
++j;
}
++i;
}
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这里,new_combs是包含如上所述的向量的向量.
如果向量矢量未排序,是否有更有效的方法来消除重复?
我想知道如何指示Java始终向下舍入给定的数字.
例如:
1.08 rounds to 1
1.88 rounds to 1
1.999999999999 rounds to 1
0.0002 rounds to 0
123.77 rounds to 123
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有什么建议?
提前致谢!:)