abb supplements

() {return instance;26}27 28/**29 * Generate TOKEN30 * token:nv6rrugevvmgjb+j IMI/GW==31 * @return32 */33 public String Maketoken () {//checkexception34//7346734837483 834u93 8493493849384 4343438435 String token = (System.currenttimemillis () + new Random (). Nextint (999999999)) + ""; 36 Data fingerprint 128 bits long 16 bytes md537 try {messagedigest MD = MESSAGEdigest.getinstance ("MD5"); ("md5[") = Md.digest (Token.getbytes ());//base64 encoding-any binary encoded text character

; - $Pthread_mutex_init (num_lock,null); the theErr = Pthread_create (tid1,null,foo1,null); the if(Err! =0) the { -printf"Error code:%d,reason:%s\n", Err,strerror (err)); in return-1; the } the AboutErr = Pthread_create (tid2,null,foo2,null); the if(Err! =0) the { theprintf"Error code:%d,reason:%s\n", Err,strerror (err)); + return-1; - } the Bayi //for (int i = 0;i the //printf ("main thread, num =%d\n", num++); the -Err =Pthread_join (tid1,nul

. NET Framework Supplements (4) Itemplater,templatecontainerattribute Directory:1.Itemplater interface2.ItemplateContainerAttribute class 1.Itemplate interface When declared in an. aspx file, populates the ASP.net server control with child controls when using controls with inline templates to define the method to implement.Public Interface ITemplateThis interface is intended for use by custom server controls, but is never implemented through these se

sortingSorting in accordance with the prescribed order; For example, according to the Age,gender two column sorting, will be in accordance with the age first platoon, and then the same old, followed by gender to row;In operatorThe in operator functions almost the same as or, but we recommend using the in more intuitive; Easy to manage; In general faster than or list execution (note condition) More suitable for sub-query cases Wildcard charactersUnder normal circumstan

PHP implements completion of closed HTML tags, and php supplements html tags. PHP implements completion of closed HTML tags. php supplements html tags. this example describes how PHP implements completion of closed HTML tags. For your reference, we often use PHP to complete closed HTML tags and php to complete html tags. The example in this article describes how to complete and Disable HTML tags in PHP. We

Original: WPF Learning Supplements (ii) TextBlock line breakIn the afternoon to help colleagues in the group to solve a small problem, for later convenience, put it to collect it.Create a new TextBlock as the most basic control, he carries the function compared to other controls to come to less,The more notable attributes are out of the layout with the exception of the data binding, and only the Text property is left.The default content property for T

want to handle multiple exceptions :Except (Attributeerror,nameerror) as E: print (e) print (' #这是捕获多个类型异常的语法 ')Although exception can catch arbitrary exceptions, exceptions for special handling or reminders need to be defined first, and finally defined exception to ensure that the program runs correctly. so the following writing is also very common:S1 = ' Hello ' try: int (s1) except Keyerror as E: print (' key error ') except Indexerror as E: print (' index error ') except Exce

Java HashMap Supplements@author IxenosFragmented knowledge Try to return to the interface instead of the actual type, such as returning list, Set, map instead of ArrayList, HashSet, HashMap, which makes it easy to change the data structure without changing the client-side code. This is for abstract programming The Map.entryset method returns the Set view setof the map map, maintaining the Entry key value pair the set is suppor

resources are the resources of memory, disks, these storage devices. At the bottom of this computer knowledge supplements (a) understand the virtual memory mechanism we said that the operating system uses a virtual memory mechanism to manage storage, from the point of view of the caching principle, the memory as a disk cache. The process is disk-oriented, why is it that the process represents a running program, a program's code snippet, data segment

C + + Supplements--Constructors (ii)PrefaceSome of the applications of the default constructors are discussed in the constructor (i). Here we explore some of the other well-known constructors, and their application scenarios.Example#include RunFamous Constructors1. Copy ConstructionSimilar to Complex (complex com) where the argument must be a reference type, which is the copy constructor.So-called shallow and deep copies are for pointer members, and f

Tag: Bind adapter Function BindingC + + supplements--bind function bindingPrefaceThe BIND function binds a fixed parameter to a known function to form a new function, thereby reducing the number of arguments and reducing the difficulty of calling the function. It should be noted that Bind is a function adapter.bind functionInstance#include Run7 9The example is very simple and everyone can understand it at a glance. But it is necessary to explain:1. Wh

C + + supplements--LAMBDA expressionsPrefaceSometimes, we need to use a function frequently within a function. At this point, we can write this function as a separate function. In fact, this new function is probably not required to be called elsewhere. We want to limit its scope, preferably limited to the current function. The interior of the function is not allowed to redefine other functions. To solve this problem, in the new standard, C + + introdu

C + + supplements--this pointersPrefaceWhen using C + + for object-oriented programming, this pointer is something that everyone knows. But do we really know about it? Here we discuss the significance of its existence and how to use it.This pointerExistence Meaning: Why do we need this pointer?To see a simple example#include RunThis example is simply too simple! Everyone can see with their toes. We need to think deeply about:There is no this parameter

-select:none, the user will not be able to start selecting text in that block of text. However, if the user starts selecting text in other areas of the page, the user can still choose to set the text to-ms-user-select:none; the regional text; The summary is:Html:Css:/* */p{user-select:none When the prefix is automatically generated,}/* */p{ user-select:none When the prefix is not automatically generated; -webkit-user-select:none; -ms-user-select:none; When it comes to user

before Except_handler3 restores the value of EBP from [ebx+10h], what is [ebx+10h]? You can first determine whether EBX is the ebx that is set when you enter Except_handler3, and it points to _exception_registration. _EXCEPTION_REGISTRATION+10H is _EXCEPTION_REGISTRATION!EBP, isn't it? This EBP is a function frame saved when entering the main function, so the variables in the main function can be obtained by offsets relative to EBP.As for the GetExceptionInformation () function, the XPointer ad

this property may be modified by someone. NBSp 8. The scopes associated to closures are active. 9. In a function, the number of arguments is obtained by arguments.length, and the number of parameters is obtained by the length property of the function. The difference between 10.call () and apply (), call () all arguments after the first parameter are the arguments to pass in, and apply places all the arguments to be passed in an array. 11.ECMASCRIPT5 has a bind method that binds a

uses the non-downward nature of the scope chain (the noun I take). ), that is, the following scopes can be accessed above, but the above cannot be accessed below. Of course, this is only a condition of the closure, the closure of the more important is the external function to hold the internal function of a nested function reference, because the closure is not the main discussion of this article (PS: When talking about encapsulation), so just look at the following example:1 function foo () {2 v

when the initial state of the file is basically ordered is low. In the beginning of the hill, the increment is larger, more groups, fewer records per group, so the direct insertion within the group is faster, and then the incremental di gradually reduced, the number of groups gradually decreased, and the number of records of the group gradually increased, but because already according to Di-1 as a distance row order, so that the file is closer to the orderly state, So the new trip sort proc

to capture within this method, and continue to be thrown with the throws keyword, such as: public void Callpop () throws Emptystackexception {... Pop (); The method may throw emptystackexception ... } In fact, an exception is often caused by another cause exception, because cause itself will have cause, and so on, forming a chain exception (Chained Exceptions). For example: try { } catch (IOException e) {//catches to IOException, throws another exception throw new S

() methodConsole.Write () Method , The cursor stops at the last word in the output string specifier , does not move to the next line. Typical is the first output form of the "Small 99 table". 2,writeline () methodConsole.WriteLine ("") , any expression included in the parentheses (except the escape character) will be output , followed by a Line End (LineTerminator), which is a newline character. Typical is the second output form of the "Small 99 table". 3,read () methodConsole.read () method is