thinkful coding

Define the method on the prototype object instead of rewriting it with the new object. Overrides make inheritance impossible: Resetting the prototype overrides the entire base class.function Jedi () {console.log (' new Jedi ');} Badjedi.prototype = {Fight:function fight () {Console.log (' fighting ');},block:function block () {Console.log (' Blocking ');}};/ /goodJedi.prototype.fight = function fight () {Console.log (' fighting ');}; Jedi.prototype.block = function block () {console.log (' block

Creating an array using literal syntaxGoodvar items = [];//badvar items = new Array ();When you need to add an array element, use push instead of directly addingvar items = [];//gooditems.push (' abc ');//baditems[items.length] = ' abc ';When you need to copy an array, you can use slice.var len = items.length; var itemscopy = [];var i; Gooditemscopy = Items.slice ();//badfor (i=0;iTo convert a class array object to an array using slicefunction Trana () { var args = Array.prototype.slice.cal

This problem once again proves the subject of this detail, drawing a diagram easy to figure out1 ImportJava.util.Scanner;2 3 4 Public classSolution2 {5 Static intDateofweekday (intDateintweekday) {6 intCur = date%7;7 intres = 0;8 intDIF = 0;9 if(Weekday > 0) {Tendif = 7* ((weekday-1)/7) + (weekday%7-cur>0? weekday%7-cur:7-(cur-weekday%7)); Oneres = date +dif; A } - Else if(Weekday ){ -Weekday =Math.Abs (weekday); thedif = 7* ((weekday-1)/7) +

Similar backpackii problems1 Static intMaximize_loot (int[] Gold,int[] silver) {2 int[] res =New int[Gold.length+silver.length+1] [10001];3Res[0][0] = 0;4 for(intI=1; i) {5 for(intj=0; j) {6RES[I][J] = Math.max (Res[i-1][j], (j>=gold[i-1]? Res[i-1][j-gold[i-1]]+10*gold[i-1]: 0));7 }8 }9 for(intI=1; i) {Ten for(intj=0; j) { OneRES[I+GOLD.LENGTH][J] = Math.max (Res[i+gold.length-1][j], (j>=silver[i-1]? res[i+gold.length-1]

I am a wonderful, recently tinker a set on the MAC coding remote Ubuntu on the Theano code of East, in order to benefit posterity.Overview: It's my programming environment and network environmentI expect to be able to write, run, debug, view matplotlib images of remote Ubuntu Theano Server on the local Mac machine.Mac settings (see here )Given the local debugging of some of the Code on Mac, I've set up a scientific computing environment for my Mac as

Pure coding to achieve Access database establishment or compression!! ' ###### #以下是一个类文件, the following annotation is the method of calling the class ################################################ ' # Note: If the system does not support the creation of Scripting.FileSystemObject objects, then the database compression feature will not be available ' # Access Database class ' # Createdbfile Create an Access database file ' # CompactDatabase compresse

; One inputtype= "text"name= "Name"> A inputtype= "Submit"value= "Submit"> - form> - Body> the HTML> 1 protected void DoPost (HttpServletRequest request, httpservletresponse response) 2 throws servletexcept Ion, IOException { 3 4 // 1. The obtained request parameter is not processed, and the result is "iso-8859-1" the decoded parameter 5 String name1 = request.getparameter ("name" 6 System.out.println (name1); // name1 =??????? 7 8 } 1 protected voidDoPost

Security is becoming an increasingly important topic for developers in all types of environments, even embedded systems that used to think security is not a problem. This article describes several types of coding vulnerabilities, identifies what vulnerabilities are, how to reduce the risk of the code being attacked, and how to better identify such flaws in your code. Inject attack By injecting information into a running process, an attacker can comp

(); var oxd = Server.CreateObject ("MSXML2.") DOMDocument "); Oxd.loadxml (Oxhy.responsetext); = = = Load xsl file ========================= var xsl = Server.CreateObject ("Microsoft.XMLDOM"); Xsl.async = false; Xsl.load (Server.MapPath ("gew.xsl")); Conversion of File = = = ==================== Response.Write (Oxd.transformnode (XSL)); Logically this should not be the problem of coding, because the declaration of the location of the code is declared

/************************* * Function: Get clock interval * parameter: which: Set which clock * itimer_real: real-time decrement, timeout to send SIGALRM signal * ITIMER _virturl: Virtual clock, timeout send sigvalrm clock * itimer_prof: * **********************/intGetitimer (intWhich,structItimerval *curr_value);/************************* * Function: Set clock interval * parameter: which: Set which clock * itimer_real: real-time decrement, time-out to send SIGALRM signal * ITIMER _virturl: Virt

is no additional overhead for this pointer, the static member function has a slight increase in speed compared to the global function of the class;(6). Call the static member function, which can be accessed with the member access operator (.) and (-) call a static member function for an object of a class or pointer to a class object, or you can use the following format directly:Class name >::such as: Myclass::getsum (), invokes the static member function of the class.However, you should follow

;ENCODING.UTF32)) { Sw. Write (text); Console.WriteLine ("encoding.utf32 Writing complete"); }using (StreamWriter sw=newstreamwriter ( "TestUTF7.txt", false,encoding.utf7) Nbsp;{sw . Write (text); Console.WriteLine ("encoding.utf7 Writing complete"); }using (StreamWriter sw=newstreamwriter ( "TestUTF8.txt", false,encoding.utf8) { NBSP;NBSP;NBSP;NBSP;NBSP;SW. Write (text); Console.WriteLine ("encoding.utf8 writing completed"); Nbsp;}console.readline (); }}} Program Run Result: Step two: Cop

.keywordbreakdefaultfuncinterfaceselectcasedefergomapstructchanelsegotopackageswitchconstfallthroughifrangetypecontinueforimportreturnvar"> 2.keyword Break Default Func Interface Select Case Defer Go Map struct Chan Else Goto Package Switch Const Fallthrough If Range Type Continue For Import

/catch insideA bad habit:for (int i = 0; i{Try{}catch (Exception ex){Throw ex;}}The habit of better:Try{for (int i = 0; i{}}catch (Exception ex){Throw ex;}18. Application logic without exception handlingFor example:A bad habit:Try{int x, y, Z;x = 0;y = 10;z = y/x;}catch (Devidebyzeroexception ex){Throw ex;}The habit of better:Try{int x, y, Z;x = 0;y = 10;if (x! = 0){z = y/x;}}catch (Exception ex){}19, relative for/while, inclined to use the Foreach loop. Correct20, the use of multi-layered archi

‘xxx‘ encode(‘utf-8‘) method: (Unicode to Utf-8) >>> u " abc " . Encode ( " utf-8 Span style= "COLOR: #800000" > " ) " Span style= "COLOR: #800000" >abc " >>> u " Chinese ". Encode (" Utf-8 " ) ' 6. In turn, convert the string represented by the UTF-8 encoding ‘xxx‘ to a Unicode string u‘xxx‘ using the decode(‘utf-8‘) method: (Utf-8 converted to Unicode )>>>'ABC'. Decode ('Utf-8') U'ABC'>>>'\xe4\xb8\xad\xe6\x96\x87'. Decode ('Utf-8') U'\u4e2d\u6587'>>>Print '\xe4\xb8\xad\xe6\x9

Using Unicode encoding in memory' \u4e2d\u6587 ' ' English '>>> x=b'ABC'Encode a string with the specified encoding >>> ' abc '. Encode (' ASCII ' ) b ' abc ' >>> " Chinese ". Encode ( " utf-8 " ) b ' \xe4\xb8\xad\xe6\x96\x87 " ' Chinese A '. Encode ('utf-8') b'\xe4\xb8\xad\xe6\x96\x87a 'Note:①b ' ... ' one character represents a byte②b ' ... A ... ' inside a represents a byte, which represents the encoding of a in the Assci codePython Basics-

)--->true string A word typeface multiply, out of the 20 range is the same two memory addresses: S1='h'* +S2='h'* +Print (S1 isS2)--->falseOther data typesThe list dic tuple set has no small data pool conceptTake list For example: L1=[1,]l2=[1,]print (L1 is L2)--- >falseCodingAsciiNo Chinese only English one byte (bytes) ==8 digit (bit)UnicodeEnglish: 32 bits 4 bytesEnglish: 32 bits 4 bytesUtf-8English: 8 bits 1 bytesEnglish: 24 bits 3 bytesGBKEnglish: 8 bits 1 bytesEnglish: 16 bits 2 bytes1.

the ASCII code storage space, So there's a UTF-8 encoding that converts Unicode encoding into variable-length encoding; in computer memory, Unicode encoding is used uniformly, and is converted to UTF-8 encoding when it needs to be saved to the hard disk or when it needs to be transferred.Python's string type is str, in memory in Unicode, a character corresponding to a number of bytes, if you want to transfer on the network or save to disk, you need to turn str into bytes.In Python, data of type

*); voidQsortvoid*p, size_t N, size_t sz, CFT CMP);//CMP has a C connection}intCompare (Const void*,Const void*);//has a C + + connectionextern "C" intC_compare (Const void*,Const void*);//with C connectionvoidFChar* V,intSZ) {qsort (V, SZ,1, compare);//ErrorQsort (V, SZ,1, C_compare);//correct}5. Global variable or lessFor global variables in different compilation units, the order of initialization is not guaranteed, minimizing the use of global variables. A reference returned by a function can

,Constmcontainer);}; TemplateclassT>classmy_array{/*...*/}; McontainerDouble, my_arrayDouble> > mc;(2) A class can contain a member that is itself a template:templateclass s>class complex{ S Re, im; Templateclass t> Complex (const complexC): Re (C.real ( )), Im (C.imag ()) {} //... };complexfloat> F (0.0); complexdouble// can: There are conversions of float to doubleHowever, the template constructor is not used to generate the copy constructor and assignment operators, so y