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How can I strip first X characters from string using sed?
...ux in a small industrial box. I have a variable containing the text pid: 1234 and I want to strip first X characters from the line, so only 1234 stays. I have more variables I need to "clean", so I need to cut away X first characters and ${string:5} doesn't work for some reason in my system.
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OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
... // try several threshold levels
const int threshold_level = 2;
for (int l = 0; l < threshold_level; l++)
{
// Use Canny instead of zero threshold level!
// Canny helps to catch squares with gradient shading
if (l == 0)
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Is it possible to select the last n items with nth-child?
Using a standard list, I'm trying to select the last 2 list items. I've various permutations of An+B but nothing seems to select the last 2:
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Run single test from a JUnit class using command-line
... invoke it like this:
> java -cp path/to/testclasses:path/to/junit-4.8.2.jar SingleJUnitTestRunner
com.mycompany.product.MyTest#testB
After a quick look in the JUnit source I came to the same conclusion as you that JUnit does not support this natively. This has never been a problem for m...
Limit text length to n lines using CSS
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729
There's a way to do it using unofficial line-clamp syntax, and starting with Firefox 68 it work...
Is it possible to install APK file if more than one emulators/devices are connected [duplicate]
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262
Yes, you can install an apk on a particular device.
In command, type:
adb devices
// list o...
How to fix Error: laravel.log could not be opened?
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24 Answers
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What is the difference between CMD and ENTRYPOINT in a Dockerfile?
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edited May 9 '18 at 20:46
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Arduino 101 实验09 - PWM 电机调速 · App Inventor 2 中文网
...生成 App 鸿蒙 · 一套积木，多端原生打包！ 下载 AI2伴侣 · 安卓/鸿蒙/iOS aia 源码商店 中文社区 中文教育版 各版本对比 关于 关于我们 发布日志 服务条款 ...