我正在尝试安装tensorflow
Please specify the location where ComputeCpp for SYCL 1.2 is installed. [Default is /usr/local/computecpp]:
Invalid SYCL 1.2 library path. /usr/local/computecpp/lib/libComputeCpp.so cannot be found
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我该怎么办?什么是SYCL 1.2?
我已经尝试使用 http://valgrind.org/docs/manual/dist.install.html
但是化妆之后,我得到了
make[2]: Leaving directory '/home/milenko/valgrind-3.11.0/mpi'
Making all in solaris
make[2]: Entering directory '/home/milenko/valgrind-3.11.0/solaris'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/milenko/valgrind-3.11.0/solaris'
Making all in docs
make[2]: Entering directory '/home/milenko/valgrind-3.11.0/docs'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/milenko/valgrind-3.11.0/docs'
make[1]: Leaving directory '/home/milenko/valgrind-3.11.0'
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我在x86上,然后我尝试了
sudo apt-get install valgrind
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但是当我尝试从命令行调用它时
valgrind
valgrind: no program specified
valgrind: Use --help for more information.
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为什么?
我试图用简单的例子来解决我的sbt测试
package example
object Lists {
def sum(xs: List[Int]): Int = {
xs match {
case x :: tail => x + sum(tail)
case Nil => 0
}
}
def max(xs: List[Int]): Int = {
xs match {
case Nil => throw new java.util.NoSuchElementException()
case List(x) => x
case x :: y :: rest => max ((if (x > y) x else y) :: rest)
}
}
}
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第二个文件可以从http://www.filedropper.com/listssuite_1下载
当我尝试用sbt测试时
[error] /home/milenko/dom1/example/src/test/scala/example/ListsSuite.scala:122: type mismatch;
[error] found : Boolean …
Run Code Online (Sandbox Code Playgroud) 我现在正看着M.Odersky的书中的例子
List.range(1, 5) flatMap (
i => List.range(1, i) map (j => (i, j))
)
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好的,首先我们创建1,2,3,4
接下来会发生什么的列表?什么是
i => List.range(1, i)
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在做什么?创建
(1,1)
(1,2)
(1,3)
(1,4)
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是还是不是?
如果我试图逃避flatMap
scala> List.range(1,5) (i => List.range(1,i) map (j => (i, j)))
<console>:11: error: missing parameter type
List.range(1,5) (i => List.range(1,i) map (j => (i, j)))
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为什么?