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Written questions often have running results, and most of the body size is around the scope of expansion, the following summarizes several related questions: The outer variable function can be found inside the variable inside the function (local variable) outside the outer layer is not found. function aaa () { var a = 10;} alert (a); // error A is not defined because a is a local variable defined inside the function, the outer (global enviro

In RangeSet of Guava learning, we talked about the features and usage of RangeSet. There are many differences between RangeMap and RangeSet.On the official API of Google Guava, we can know that RangeMap is a collection type that does not intersection and is not an empty Range (key) map to a Value ). Unlike RangeSet, RangeMap cannot merge adjacent intervals even if the ing value is the same.Like RangeSet, RangeMap is also an interface that implements only two classes, mmutableRangeMap and TreeRan

Tstrings is an abstract class that, in actual development, is the most applied except for the basic type.General usage We all know, now to discuss some of its advanced usage.Let's start by listing several properties to be discussed:1, CommaText2, Delimiter Delimitedtext3, Names Values ValuefromindexLet's look at the first one: CommaText. How to use it? To speak in code:Constconstr:string = ' aaa,bbb,ccc,ddd ';VarStrs:tstrings;I:integer;BeginSTRs: =

own wrapper objects: the String number Boolean base type will find the corresponding wrapper object type, then wrap the object to give all the properties and methods to the base type, and then wrap the object to disappear Varstr = ' Hello ';String.prototype.lastValue = function () {return This.charat (this.length-1);}; Alert (Str.lastvalue ());o var str = ' Hello '; Str.number = 10; After the object is created, the wrapper object disappears immediately alert (str.number); New objects created by

The use of Delphi tstringlistTstrings is an abstract class that, in actual development, is the most applied except for the basic type.Tstringlist Common Methods and properties:VarList:tstringlist;I:integer;BeginList: = tstringlist.create;List.add (' Strings1 '); AddList.add (' Strings2 ');List.exchange (0,1); ReplacementList.insert (0, ' Strings3 '); InsertI: = List.indexof (' Strings1 '); {The first occurrence of a position}List.sort; Sortlist.sorted: = True; {Specify sort}List.count; TotalList

protected] yum.repos.d]# mkdir AAA[Email protected] yum.repos.d]# MV *.repo aaa/[email protected] yum.repos.d]# CP Aaa/centos-media.repo.[[email protected] yum.repos.d]# lsAAA Centos-media.repo[Email protected] yum.repos.d]# VI Centos-media.repo... The above contents are omitted.[C6-media]name=centos-$releasever-mediabaseurl=file:///media///Modify here to indica

① Configuring the console login password　　The first way to configure authentication (AAA)[Server] AAA (authentication mode)[SERVER-AAA] local-user admin1234 password irreversible-cipher (irreversible password) [email protected] (local user admin1234 password)[SERVER-AAA] Local-user admin1234 Privilege level 15 (local u

version 2 III >. Because the function of the program is to delete the specified primary key, subkey, and key values, this requires that we first set the location and name of the values in the registry. Specifically as follows:The following subkey and key values are established in the "SOFTWARE" subkey below the HKEY_LOCAL_MACHINE PRIMARY key:Create a "AAA" subkey under the "SOFTWARE" subkey. Under AAA subk

When you use-xx:+traceclasspaths or execute jinfo on a server, you get the jar packages Classpath contains, for example:Java.class.path = local/aaa/lib/spring-data-redis-1.8.3.release.jar:/usr/local/aaa/lib/ spring-tx-4.3.8.release.jar:/usr/local/aaa/lib/spring-jdbc-4.3.7.release.jar:/usr/local/aaa/lib/ Classmate-1.3.1

' regexp ' and its front and back lines, plus the ' regexp ' before the first line# line number of rows (similar to "GREP-A1-B1")Sed-n-E '/regexp/{=;x;1!p;g;$! n;p;d;} ' -E H# Displays lines containing "AAA", "BBB" or "CCC" (in any order) Sed '/aaa/!d/bbb/!d/ccc/!d ' NBS P # The order of the strings does not affect the result # displays lines containing "

/** * 1, the null judgement of the string org.aphche.commons.lang.StringUtils */ Checks If a String is empty ("") or null. SYSTEM.OUT.PRINTLN (Stringutils.isempty (null)); True System.out.println (Stringutils.isempty ("")); True System.out.println (Stringutils.isempty ("")); False System.out.println (Stringutils.isempty ("Bob"));//False System.out.println (Stringutils.isempty ( " Bob ")); False //Checks If a String is whitespace, empty ("") or null. SYSTEM.OUT

display matching rowsSed-n '/regexp/{g;1!p;}; H # find ' regexp ' and display the next line of matching rows, but do not show matching rowsSed-n '/regexp/{n;p;} ' # Displays the line that contains ' regexp ' and its front and back lines, plus the ' regexp ' before the first line# line number of rows (similar to "GREP-A1-B1")Sed-n-E '/regexp/{=;x;1!p;g;$! n;p;d;} ' -E H # Displays lines containing "AAA", "BBB" or "CCC" (in any order)Sed '/

Native usageAPIs for direct use_.rejectRemoves an element based on the condition.var foo = [ {id: 0, name: "aaa", age: 33}, {id: 1, name: "bbb", age: 25}]var bar = _.reject(foo, [‘id‘, 0])//bar = [{id: 1, name: "bbb", age: 25}]_.pickFilters the value in the first parameter and returns the array based on the key of the second parametervar foo = {id: 0, name: "aaa", age: 33}var bar = _.pick(foo, [‘name‘, ‘

Entry Point of NGN access control security -- Diameter protocol and its application in the SIP network environment Xie Wei I. Introduction The diameter series protocol is a new generation of AAA technology, which is gaining more and more attention due to its powerful scalability and security assurance. In international standards organizations such as ITU, 3GPP and PP2, DIAM-ETER protocols have been officially used as the preferred

create the msmtp log File ". msmtp. log", which is specified in. msmtprc. Note that "." indicates a hidden file and the content is blank. $ sudo vim ~/.msmtp.log Configure the msmtp Configuration File ". msmtprc" #Accounts will inherit settings from this sectiondefaults# A first gmail addressaccount gmailhost smtp.gmail.comport 587from username@gmail.comuser username@gmail.compassword passwordtls_trust_file /etc/ssl/certs/ca-certificates.crt#

architecture, as long as it is renamed, making these concepts more acceptable. Structure of the two-way binding link of aveon v3 // Viewmodel framework view // attribute accessors // composite accessors → the binder zookeeper Dom accessors zookeeper data bindings // set accessors/ /command restart viewmodel is an object composed of accessors and commands. The accessor is the accessor, which is derived from Ruby's attr_accessor. It is a combination of attr_writer and attr_reader to read an

and last lines in the fileSed-e '$! {H; d;} '-e x # enter a blank line when there is only one row in the file.Sed-e '1 {$ q;} '-e' $! {H; d;} '-e x # This row is displayed when there is only one row in the file.Sed-e '1 {$ d;} '-e' $! {H; d;} '-e x # when there is only one row in the file, no output# Only display rows matching Regular Expressions (simulate "grep ")Sed-n'/regexp/P' # method 1Sed '/regexp /! D' # method 2# Show only the rows that do not match the regular expression (simulate "gre

[], Int32, stringsplitoptions) Returns a string array containing the substrings in this string, separated by the elements of the specified Char array. parameter specifies the maximum number of substrings to return, and whether to return an empty array element. String.Split (string[], Int32, stringsplitoptions) Returns a string array containing the substrings in this string, separated by the elements of the specified string array. parameter specifies the maximum number of

command to display directly Import OS Print (Os.system ("Ping www.baidu.com")) Os.environ Get system environment variable (OS.PATH.ABSPATH) (path) Returns the absolute path normalized by path Import OS Print (Os.path.abspath (' hellow.py ')) () Os.path.split (path) Partition path into directory and file name two tuples returned, does not determine whether the file or directory exists Import OS Filename=r "C:\Users\SS\test.txt"

SERVICE1.AAA () and SERVICE2.BBB () to complete a business.At this point service1.aaa () service2.bbb () have transactions, then which of the transactions apply? The propagation behavior of the applied transaction.Propagation behavior of transactions: used to resolve calls between business layer methods and how transactions are passed.2. 7 propagation behaviors of a transaction (Class 3, key 1th)Descriptio