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How to use sed to remove the last n lines of a file
I want to remove some n lines from the end of a file. Can this be done using sed?
22 Answers
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To find whether a column exists in data frame or not
I have a data.frame with the name "abcframe"
4 Answers
4
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How do you produce a .d.ts “typings” definition file from an existing JavaScript library?
I'm using a lot of libraries both my own and 3rd party. I see the "typings" directory contains some for Jquery and WinRT... but how are they created?
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Split delimited strings in a column and insert as new rows [duplicate]
I have a data frame as follow:
6 Answers
6
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What encoding/code page is cmd.exe using?
When I open cmd.exe in Windows, what encoding is it using?
6 Answers
6
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C++常用排序算法汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
... * https://www.tsingfun.com
************************************/
#include<stdio.h>
#include<stdlib.h>
/*
第一种形式的选择排序
选择排序后的顺序为从小到大
*/
void Select_Sort1(int *arr,int len)
{
int i,j;
for(i=0;i<len;i++)
for(j=i+1;j<len;j++)
if(arr[i] > ...
What's the best way to get the last element of an array without deleting it?
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how to use “AND”, “OR” for RewriteCond on Apache?
Is this how to use AND, OR for RewriteCond on Apache?
3 Answers
3
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Delete local Git branches after deleting them on the remote repo
I want to have my local and remote repositories always in sync in terms of branches.
11 Answers
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What is the best way to initialize a JavaScript Date to midnight?
What is the simplest way to obtain an instance of new Date() but set the time at midnight?
9 Answers
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