Shell Programming Text Processing Tool sed

This article mainly writes about the use of shell script text processing tool sed. Summary Stream EDitor (Stream EDitor) is a powerful and simple text parsing and transformation tool, which can read text, edit the text content (delete, replace, add, move, etc.) according to specified conditions, and finally output all lines or only some proce ...

Posted on Mon, 14 Oct 2019 18:49:33 -0700 by klaaz

Introduction to Julia High Performance Dynamic Programming Language

There are 851 words in this article. It takes about 3 minutes to read! Summary Julia is a "brand new" high-performance dynamic programming language. Two days ago, Julia ushered in a major update of its 1.0 official version. Julia sets Python, C, R, Ruby's strengths, feels like a scripting language, and has good support for intera ...

Posted on Fri, 11 Oct 2019 23:53:16 -0700 by davidwhiteuk

String Retrieval Method

3-1 String (String Retrieval Method)   String Retrieval Method 1. Want to get a character in a string stringObject.charAt(index) returns the character in stringObject that gets the index position stringObject.charCodeAt(index) returns the character encoding of the character that gets the index position in stringObject. 2. Want to ge ...

Posted on Wed, 09 Oct 2019 05:26:10 -0700 by C_Calav

C++ String Function

The Usage of Common String Functions in C++ Language strlen(s1) Function: Find the length of the string Return value: Return string s1 length #include <iostream> using namespace std; #include <cstring> int main(int argc, const char* argv[]) { char s[20] = "hello"; int len = strlen(s); ...

Posted on Tue, 24 Sep 2019 22:34:11 -0700 by kylevisionace02

Internal and external command assistance

View internal and external command help I. Internal Order _Use type to determine whether the command is internal or external, and type is followed by the command to be viewed. Example: type enable [10:52:18 root@centos ~]#type enable enable is a shell builtin Some commands have both internal and external commands, but the system will give pri ...

Posted on Mon, 23 Sep 2019 23:48:14 -0700 by prasad_deba

python lists, tuples, and dictionaries

I. Sequence Introduction Sequences are data structures that contain multiple data sets. Common sequence types for python include strings, tuples, lists, and so on Where strings and tuples are immutable, and lists are immutable Tuples create lists using (), and lists using [] >>> my_tup ...

Posted on Sun, 22 Sep 2019 05:05:45 -0700 by girlzz

python sets, tuples, Dictionaries

Main contents: 2, set 3, tuple 4, dictionary Review: Strings, like tuples, can only be read but not written. Lists and dictionaries can nest anything, lists can nest lists   L = list("hello")  # L = ['h', 'e', 'l', 'l', 'o'] Collections and dictionaries are disordered; lists, tuples, strings are ordered Collections, dictionaries and l ...

Posted on Thu, 19 Sep 2019 05:01:51 -0700 by tdelobe

GO Learning Notes - Data Verification

Theme: Golang data validation based on asaskevich/govalidator Xiao Slow Brother's original article, welcome to reprint Catalog Introduction to asaskevich/govalidator_2. String matching_3. Strct element matching_4. Optional validation of struct elements_5. Strct nested verification_6. Nested optional validation cannot be implemented_VII. Pers ...

Posted on Sun, 15 Sep 2019 07:11:35 -0700 by twmcmahan

010 Cracking Algorithm Analysis 1

010 Solution (2) Algorithmic Analysis 1 010 Dissolution (1) Violence Dissolution After the violence has cracked, I still want to write a 010Edit registry machine, this article goes on to the last analysis algorithm analysis Analyzing key function ...

Posted on Mon, 09 Sep 2019 18:41:03 -0700 by Coronach

Python AttributeError: 'Module' object has no attribute 'STARTF_USESHOWINDOW'

Scholars have to be ambitious to learn, not to learn, not to learn, not to become a broad talent, not to aspire to become a scholar. —— Zhuge Liang Du Jinyang Today's new colleague's installation environment encountered a puzzling problem: AttributeError: 'Module' object has no attribute 'STARTF_USESHOWINDOW' It seems that none ...

Posted on Thu, 05 Sep 2019 01:19:59 -0700 by Rai_de