interleave

How can I construct a list of a list into one single list with interleaving sublists? like recons([[1,2],[3,4]],X) will give X= [1,3,2,4]? I have been trying hours and my code always gave me very strange results or infinite loop, what I thinking was something like this: recons([[A|R],REST],List):- recons(R,REST), append(A,[R|REST],List). I know its completely wrong, but I don`t know how to fix this. Instead of thinking about efficiency first, we can think about correctness first of all. interleaving_join( [[]|X], Y):- interleaving_join( X, Y). that much is clear, but what else? interleaving

I know that there are a lot of resources online explaining how to deinterleave PCM data. In the course of my current project I have looked at most of them...but I have no background in audio processing and I have had a very hard time finding a detailed explanation of how exactly this common form of audio is stored. I do understand that my audio will have two channels and thus the samples will be stored in the format [left][right][left][right]... What I don't understand is what exactly this means. I have also read that each sample is stored in the format [left MSB][left LSB][right MSB][right

一般而言，MySQL 的调优可以分为两个层面，一个是在MySQL层面上进行的调优，比如SQL改写，索引的添加，MySQL各种参数的配置；另一个层面是从操作系统的层面和硬件的层面来进行调优。操作系统的层面的调优，一般要先定位到是那种资源出现瓶颈——CPU、 内存、硬盘、网络，然后入手调优。所以其实MySQL 的调优，其实不是那么简单，它要求我们对 硬件、OS、MySQL 三者都具有比较深入的理解。比如 NUMA 架构的CPU是如何分配CPU的，以及是如何分配内存的，如何避免导致SWAP的发生；Linux 系统的IO调度算法选择哪一种——CFQ、DEADLINE、NOOP、还是 ANTICIPATORY；MySQL的redo log和undo log它们的写哪个是顺序写，哪个是随机写？ 所以其实，如果想要对 MySQL 进行调优， 要求我们必须对 硬件和OS，以及MySQL的内部实现原理，都要有很好的掌握 。本文关于MySQL调优基础之 CPU和进程。 一、CPU 架构之 NUMA和SMP SMP：称为 共享内存访问CPU (Shared Memory Mulpti Processors), 也称为 对称型CPU架构 （Symmetry Multi Processors) NUMA： 非统一内存访问 (Non Uniform Memory Access）

How could I interleave files line by line with cmd.exe with help of read, grep, echo, etc ? File1.txt with the context: Aaaaaaa1 Aaaaaaa2 Aaaaaaa3 File2.txt with the context: Bbbbbbb1 Bbbbbbb2 Bbbbbbb3 I would like to combine File1.txt and File2.txt in other file (OUTCOME.txt) in this way: Aaaaaaa1 Bbbbbbb1 Aaaaaaa2 Bbbbbbb2 Aaaaaaa3 Bbbbbbb3 You need a method to read from two files in parallel. This is possible by using two methods at the same time ( <file1 set /p and for /f ... in (file2) ): @echo off setlocal enabledelayedexpansion <file2.txt ( for /f "delims=" %%a in (file1.txt) do ( set

I was wondering how could I write a function in Haskell that interleaves a list of lists into a single lists, for example, if I had a function called interleavelists :: [[a]] -> [a] it should be able to interleave the elements. Example: [[1,2,3] [4,5,6] [7,8]] --> [1,4,7,2,5,8,3,6] . The lists can be both finite or infinite... Can I use foldr ? Daniel Fischer The quickest way to write it is to use transpose from Data.List . import Data.List interleavelists :: [[a]] -> [a] interleavelists = concat . transpose transpose picks the first element of each non-empty list of its argument, putting them