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Summary:This article mainly introduces the use of the split () function in Python, the use of the split () function is the basic knowledge of Python learning, usually used to slice and convert strings into lists, and the need for friends to refer to.Function: Split ()There are two functions for split () and Os.path.split () in Python, as follows:Split (): Splits the string. Slices a string by specifying a delimiter and returns a segmented list of stri

I used the Linux command AR-Create a static library. A fileThis article link: http://codingstandards.iteye.com/blog/1142358 (reproduced please specify the source)Description of UseCreate a static library. a file. It is often used when developing programs in C/D + +, but I rarely use AR commands on the command line alone, usually in makefile, and sometimes in shell scripts. For knowledge about library files,

Design and implement a data structure for Least frequently Used (LFU) cache. It should support the following operations: get and put .get(key)-Get The value ('ll always be positive) of the key if the key exists in the cache, otherwise return-1.put(key, value)-Set or insert the value if the key is not already present. When the cache is reaches its capacity, it should invalidate the least frequently used item

#!/bin/bashstat_ok=0stat_warning=1stat_critical=2stat_unknown=3rds= '/home/rediserver/bin/redis-cli ' stats= ' $rds infostats ']+/, "", "G", $ $)} "ho" $stats "|awk '/keyspace_hits/{printgensub (/[ a-z_:\n]+/, "", "G", $)} "echo" $stats "|awk '/keyspace_misses/{printgensub (/[a-z_:\n]+/," " , "G", "$"} "o" $stats "|awk '/expired_keys/{printgensub (/[a-z_:\nsummary=" keyspace_hits:$ Keyspace_hitskeyspace_misses: $keyspace _missesexpired_keys: $expired _keys "pmem=" Ps-eo pmem,rsz,comm,pcpu|grepre

Des algorithm is a symmetric cryptosystem in the cryptography system, also known as the United States data Encryption Standard, is the 1972 U.S. IBM developed symmetric cryptography algorithm. The plaintext is grouped by 64 bits, the key is 64 bits long, the key is in fact 56-bit participating DES operations (8th, 16, 24, 32, 40, 48, 56, 64 bits are check bits, So that each key has an odd number of 1) After grouping the plaintext group and the 56-bit key to the bitwise substitution or Exchange m

PrefaceDisclaimer: I am referring to the technical summary used in the background development of Java and. NET (C #) in GeneralRecently has been applying for ING, the landlord of the project or. NET (C #) project is mostly, the Java project is relatively small, in this also spit trough, recruit. NET (C #) The company is very little poor, actually very much like C # syntax and vs Universe first editor, although. NET core word of mouth good, But the eco

Image Repair Program-can be used for watermark removalIn real life, we may encounter some beautiful or precious pictures are disturbed by noise, such as the folds of old photos, such as dust or stains on the lens, or some of the things we want to use for me but have a nasty watermark, then there is no way to eliminate these noise?The answer is yes, it is still a good framework that we have used countless ti

, and do not touch which product class should be instantiated this detail.4. Original model mode: By giving a prototype object to indicate the type of object to be created, and then creating more objects of the same type with the method of copying the prototype object. The original model mode allows the product class to be dynamically increased or decreased, and the product class does not need to have any predetermined hierarchy structure, and the original model pattern applies to any hierarchy

The LS command is one of the most commonly used commands under Linux, LS is the same as the dir command under DOS, is used to list the files under the directory, let's take a look at the use of LSEnglish Full Name: list is the meaning of lists, when we learn something in order to know the reason why, when you know that this thing is probably what the future of your thinking will be associated with a lot of

the currently open view (you can choose to close, activate, and so on)Ctrl+j forward Incremental lookup (after pressing CTRL+J, each letter editor you enter provides a quick match to navigate to a word, if notThere, then in the Stutes line display did not find, check a word, especially practical, this function idea two years ago.CTRL+SHIFT+J Reverse incremental lookup (same as above, except forward)Ctrl+shift+f4 Close all open editerCtrl+shift+x turns the currently selected text to lowercaseCtr

First, if the WPS can not be used in Chinese words should be excell ppt Word can not be used. My method needs to change three files. Open these three files successively.1 [email protected]:~$ sudo vim/usr/bin/wps23 [email protected]:~$ sudo vim/usr/bin/WPP4 [email protected]:~$ sudo vim/usr/bin/etThen joinExport xmodifiers="@im =fcitx"export qt_im_module="FCITX "Three files are added to the above code.In fa

A week did not knock code, shortcut keys and forget, it seems necessary to summarize, for yourself to see. (commonly used, not commonly used not to write, write also can't remember)Quick fix:ctrl+1Word completion:alt+/Full Project Search:ctrl+hDelete Row:ctrl+d is very useful, without the mouse dragInsert one line on the current line:ctrl+shift+enterInsert one line on the next line: shift+enterMove the sele

(a) Title:Accept a user input to determine if the input can be used as a variableConditions that can be used as variables(1) Uppercase and lowercase letters can be(2) A number may be in the middle of the letter, but cannot begin with a number(3) Special characters except "_" can not be used as variablesFor example:[Email protected] hushuai]# bash 22.shInput:1dsfN

Design and implement a data structure for Least recently Used (LRU) cache. It should support the following operations: get and set .get(key)-Get The value ('ll always be positive) of the key if the key exists in the cache, otherwise return-1.set(key, value)-Set or insert the value if the key is not already present. When the cache is reached its capacity, it should invalidate the least recently used item bef

Description of UseThe ATE command can be used to display and modify the system datetime, noting that it is not a time command.Common parametersFormat: DateDisplays the current date time.Format: Date mmddhhmmFormat: Date mmddhhmmyyyyFormat: Date MMDDHHMM.SSFormat: Date MMDDHHMMYYYY.SSSet the current date time, only the root user can execute, and then execute clock-w to synchronize to the hardware clock.MM is the month, DD is the date, HH is the number