pipeline | 易学教程

Bash error: Integer expression expected

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问题 In the sections below, you'll see the shell script I am trying to run on a UNIX machine, along with a transcript. When I run this program, it gives the expected output but it also gives an error shown in the transcript. What could be the problem and how can I fix it? First, the script: #!/usr/bin/bash while read A B C D E F do E=`echo $E | cut -f 1 -d "%"` if test $# -eq 2 then I=`echo $2` else I=90 fi if test $E -ge $I then echo $F fi done And the transcript of running it: $ df -k | ./filter

sklearn pipeline - how to apply different transformations on different columns

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问题 I am pretty new to pipelines in sklearn and I am running into this problem: I have a dataset that has a mixture of text and numbers i.e. certain columns have text only and rest have integers (or floating point numbers). I was wondering if it was possible to build a pipeline where I can for example call LabelEncoder() on the text features and MinMaxScaler() on the numbers columns. The examples I have seen on the web mostly point towards using LabelEncoder() on the entire dataset and not on

How do you determine if WPF is using Hardware or Software Rendering?

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问题 I\'m benchmarking a WPF application on various platforms and I need an easy way to determine if WPF is using hardware or software rendering. I seem to recall a call to determine this, but can\'t lay my hands on it right now. Also, is there an easy, code based way to force one rendering pipeline over the other? 回答1: Check the RenderCapability.Tier http://msdn.microsoft.com/library/ms742196(v=vs.100).aspx http://msdn.microsoft.com/en-us/library/system.windows.media.rendercapability_members.aspx

What considerations go into predicting latency for operations on modern superscalar processors and how can I calculate them by hand?

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I want to be able to predict, by hand, exactly how long arbitrary arithmetical (i.e. no branching or memory, though that would be nice too) x86-64 assembly code will take given a particular architecture, taking into account instruction reordering, superscalarity, latencies, CPIs, etc. What / describe the rules must be followed to achieve this? I think I've got some preliminary rules figured out, but I haven't been able to find any references on breaking down any example code to this level of detail, so I've had to take some guesses. (For example, the Intel optimization manual barely even

How do I make a Jenkins job start after multiple simultaneous upstream jobs succeed?

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问题 In order to get the fastest feedback possible, we occasionally want Jenkins jobs to run in Parallel. Jenkins has the ability to start multiple downstream jobs (or \'fork\' the pipeline) when a job finishes. However, Jenkins doesn\'t seem to have any way of making a downstream job only start of all branches of that fork succeed (or \'joining\' the fork back together). Jenkins has a \"Build after other projects are built\" button, but I interpret that as \"start this job when any upstream job

C Minishell Adding Pipelines

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So I'm making a UNIX minishell, and am trying to add pipelines, so I can do things like this: ps aux | grep dh | grep -v grep | cut -c1-5 However I'm having trouble wrapping my head around the piping part. I replace all the "|" characters with 0, and then run each line as a normal line. However, I am trying to divert the output and input. The input of a command needs to be the output of the previous command, and the output of a command needs to be the input of the next command. I'm doing this using pipes, however I can't figure out where to call pipe() and where to close them. From the main

C Minishell Adding Pipelines

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问题 So I\'m making a UNIX minishell, and am trying to add pipelines, so I can do things like this: ps aux | grep dh | grep -v grep | cut -c1-5 However I\'m having trouble wrapping my head around the piping part. I replace all the \"|\" characters with 0, and then run each line as a normal line. However, I am trying to divert the output and input. The input of a command needs to be the output of the previous command, and the output of a command needs to be the input of the next command. I\'m doing

What considerations go into predicting latency for operations on modern superscalar processors and how can I calculate them by hand?

阅读更多关于 What considerations go into predicting latency for operations on modern superscalar processors and how can I calculate them by hand?

问题 I want to be able to predict, by hand, exactly how long arbitrary arithmetical (i.e. no branching or memory, though that would be nice too) x86-64 assembly code will take given a particular architecture, taking into account instruction reordering, superscalarity, latencies, CPIs, etc. What / describe the rules must be followed to achieve this? I think I\'ve got some preliminary rules figured out, but I haven\'t been able to find any references on breaking down any example code to this level