salesforce standard objects

, 1970 to the current number of seconds.About the interpretation of the time formatUTC (Universal time COORDINATED,UTC) world coordination TimesCST China Time utc+8:00 (Beijing time)GMT (Greenwich Mean Time) GMT: Here's how the Linux timestamp translates into a standard time format under javascript:1 functionStandarddateformat (timestamp)2 {3 varDate =NewDate (timestamp*1000);//Timestamp is the number of seconds, and the Date () parameter

This function is the implementation of the object in a string representation of the format output to The stream file object files . where all non-keyword parameters are converted to string output by str () , the keyword parameter Sep is the implementation delimiter, such as multiple parameter output when you want to output the middle separator character; keyword parameters End is the character at the end of the output, the default is a newline character \ n; the keyword parameter file is the

1. built-in JSP objects JSP has nine built-in objects: request, response, session, out, page, application, exception, pagecontext, config1.1 request The request information of the client is encapsulated in the request object, which can be used to understand the customer's needs and then respond. It is an instance of the httpservletrequest class. The common method is as follows: Object getattribute (string n

'); True non-empty string is truevar bool3 = Boolean ("); Falsevar str = String (123.45); ' 123.45 'Alert (typeof str); StringIv. points to be aware of Do not new Number() use new Boolean() , new String() create packaging objects; Use parseInt() or parseFloat() to convert any type to number ; String()A method that converts any type to string , or calls directly an object toString() (null and undefined without the method; The number o

Python standard library: built-in function print (* objects, sep = '', end = '\ n', file = sys. stdout, flush = False), pythonsys. stdout This function is used to format and output an object in a string representation to a stream file object file. All non-Keyword parameters are converted to string output in the str () mode. The keyword parameter sep is a delimiter. For example, if multiple parameters are o

Creating objects with constructors, using prototypes to add methods to functions function Person (name,age,sex) { This. Name=name; This. Age=age; This. Sex=sex; } Person.prototype.play=function () { Return "I am:" +this. Name+ ", Name:" +this. Age+ ", Age:" +this. Sex+ ""; } Person.prototype.fav=function (food) { Return "I love to Eat" +food+ ""; } var per=new person (' Xiao ', ' n ', ' NV '); Alert (Per.play ())

Standard single-instance notationCreate a song with the manager as an example.+ (instancetype) sharedqysongmanager{ static static dispatch_once_t Oncetoken; //executes a block object once and only once for the lifetime of a application. Dispatch_once (oncetoken,^{ songmanager =[[self alloc] init]; }); return Songmanager;}Once created, Songmanager is the singleton object, that is, in me

I write a simple program to distinguish between the vector container size () and the capacity () function, where the capacity function is to reserve space for the vector container, without having to reallocate the memory every time the element is added, thus improving the efficiency a lot. I through a small program to study, the following is the program and running results, more concise can be seen capacity size is larger than size, because size refers to the number of elements that the containe

1#include 2#include 3 4 BOOLGT6 (Const ints) {5 returns>=6;6 }7 intMain () {8 inta[]={0,1,2,3,4,5,6,7,8,9};9std::vectorint>vec (a,a+Ten);TenStd::coutStd::endl; One return 0; A}#include #includeclassgt_cls{ Public: Gt_cls (intVal=0): I (val) {}BOOL operator()(Const ints) { returns>=i; }Private: inti;};intMain () {inta[]={0,1,2,3,4,5,6,7,8,9}; Std::vectorint>vec (a,a+Ten); Std::cout6)) Std::endl; return 0;}Using function objects