scratch programming book

still need to read first, in reverse summarize the following, the effect will be very good, the first chapter has a lot of not written up, such as Java object Heap mechanism, look at Java before the best C, C + + Some understanding, Java did optimize a lot of features, but I am not a particular language of the death of loyalty, arguing this also meaningless , but Java is really being enabled by more and more enterprise developmentPersonal feelings mainly have these aspects1. Java portability is

Label:The seventh chapter is also quite miscellaneous, see not very clear. Although I finished it, I felt that I had not got too many things and had to go back to see them. See this CHR function, The original is to turn the number into ASCII code, such as Chr (10) is the carriage return.BEGIN Dbms_output.Put_Line (' Gogo ' | |CHR (10) | | ' Tot '); end;/Use here | | To connect characters, or you can use Concat to connect. However, Concat has only two parameters, that is, connecting two s

if TRUE or not 0 indicates that the system has a double-byte version of USER.EXE installed, is False or 0 is not. Sm_debug if the value of TRUE or not 0 indicates that the system has a DEBUG version of USER.EXE installed, false or 0 is not. Sm_menudropalignment if the value is true or not 0, the drop-down menu is right-aligned or left-aligned. Sm_mousepresent if a value of true or not 0 is installed, the mouse is not installed. Sm_mousewheelpresent a Wheel Mouse is installed if the value is tru

The first chapter ... October 25, 2016 22:41:45A 143,000 number can be stored in the 1MB storage space, and if each number is represented by a 32-bit integer , the 1MB storage space can be stored 250,000 a number;I can see it in a daze. Answer:1MB (bytes) =1024kb (bytes) =1024*1024bytes1024*1024/7 is approximately 149,796But sometimes for convenience of estimation, 1024 is usually taken as 1000, i.e.1mb=1000kb=1000,000byte1000,000/7 is about 142,857, estimated, almost 143000.This value should co

Static voidMain (string[] args) { Char[] arr =New[] {'a','b','C','D','e'}; Charv ='D'; varindex = Bisearch (arr,0,4, V); Console.WriteLine (index); Char[] arr2 =New[] {'b','C','D','e','F' }; CharV2 ='a'; varIndex2 = Bisearch (ARR2,0,4, v2); Console.WriteLine (INDEX2); Console.read (); } Static intBisearch (Char[] arr,intBintECharv) {intMinindex = B, Maxindex =e, Midindex; //There are two scenarios for the end of the loop://If Minindex is an even num

Question 1: According to the source code, when I found the time to knock. The effect is not implemented correctly. Where is not correct? There is no source code glpushattrib (gl_line_stipple) Glpopattrib (). So there's going to be a final draw. The information that is provided in the drawing is redrawn each time the updated dash time is overwritten before the line has been developed. The negotiation stack is processed so that the brush frame redraw will not affect the drawing results of other fr

A few months ago I wrote a ranking of the beautiful Reading Notes of programming _ 1.3 pieces of pancakes, listing the examples in the book }, to reduce the number of searches from the original 172126 to 29, we thought that to further reduce the number of searches, we had to strengthen the pruning conditions and add a large amount of code. In fact, we only need to change one of them, the number of searches

Source code of Version 7 of opengl programming guide includes bug Page35 lines. c hongbao book, page35lines. c Problem 1: When I typed in according to the source code, I found that the running results were incorrect. What's wrong? The source code does not contain glPushAttrib (GL_LINE_STIPPLE) glPopAttrib (). Therefore, each time you update a vertex draw line, the next draw will overwrite the previously dra

. Single Case mode and multithreading(1) Load now/a hungry man modeImmediate loading is when the object is created using the class, and the common implementation is the new instantiation.public class myobject{private static MyObject myobject=new MyObject ();Private MyObject () {}public static MyObject getinstance () {Return MyObject}}(2) Lazy loading/lazy modeThe instance is created when the getinstance () method is called, and the object is instantiated in the method.public class myobject{priva

Just see this example is tangled up ... Compile but Ah, Google after seeing a lot of people will be ... Later, after a query, found the compilation methodCompile with masm615:In addition to connecting the necessary Lib files in the example, is to set masm615 environment variables, pach add masm615 directory, include (no new) Add include directory, lib add Lib directory, for example:Pach:x:\masm615\Include:x:\masm615\includeLib:x:\masm615\libX is the disk that holds the MASM, the directory behind