short

问题 I am printing Toast message in my application to show notification but i want to know value of Toast.LENGTH_LONG and Toast.LENGTH_SHORT. What other values i can use. Can anyone tell me what is the value of these two variables? 回答1: There is another question that answers what you are looking for. The answers are: private static final int LONG_DELAY = 3500; // 3.5 seconds private static final int SHORT_DELAY = 2000; // 2 seconds This was courtesy of FeelGood. You can find the whole thread below

问题 This question already has answers here : Cannot implicitly convert type 'int' to 'short' [duplicate] (9 answers) Closed 5 years ago . Following expression is ok short d = ("obj" == "obj" ) ? 1 : 2; But when you use it like below, syntax error occurs short d = (DateTime.Now == DateTime.Now) ? 1 : 2; Cannot implicitly convert type 'int' to 'short'. An explicit conversion exists (are you missing a cast?) Can anyone explain why this is so? Is there a difference between comparing string-to-string

问题 I'm trying to rewrite the URL using htaccess, but I have some problems that I hope you could help me with. This is the contents of my .htaccess file RewriteEngine On RewriteCond %{SCRIPT_FILENAME} !-d RewriteCond %{SCRIPT_FILENAME} !-f RewriteRule ^(.*)$ ./index.php?page=projects&id=$1 The following rule works great, it converts this url: peterboruplund.dk/?page=projects&id=projectname to this peterboruplund.dk/projectname But the problem is that I also want to be able to only view a page.

问题 Say I'm looping through like 20/30 objects or in any other case where I'm dealing with smaller numbers, is it a good practice to use short instead of int? I mean why isn't this common: for(short i=0; i<x; i++) Method(array[i]); Is it because the performance gain is too low? Thanks 回答1: "is it a good practice to use short instead of int?" First of all, this is a micro optimization that will not achieve the expected results: increase speed or efficiency. Second: No, not really, the CLR

问题 Say I'm looping through like 20/30 objects or in any other case where I'm dealing with smaller numbers, is it a good practice to use short instead of int? I mean why isn't this common: for(short i=0; i<x; i++) Method(array[i]); Is it because the performance gain is too low? Thanks 回答1: "is it a good practice to use short instead of int?" First of all, this is a micro optimization that will not achieve the expected results: increase speed or efficiency. Second: No, not really, the CLR

问题 I'm trying to convert a HEX number into a short (2 Bytes) using C++ everything is OK except for one thing... signed conversion from short to Byte (last test) i found this question and couldn't really benefit from it: portable signed/unsigned byte cast,C++ here are my tests: // test 1 - positive B2Short (success) byte *b = new byte[2]; b[0] = 0x10; //low byte b[1] = 0x00; //heigh byte signed short test = 0; test = ByteToShort(b); cout << test << endl; // test 2 - negative B2Short (success) b[0

问题 I'm trying to convert a HEX number into a short (2 Bytes) using C++ everything is OK except for one thing... signed conversion from short to Byte (last test) i found this question and couldn't really benefit from it: portable signed/unsigned byte cast,C++ here are my tests: // test 1 - positive B2Short (success) byte *b = new byte[2]; b[0] = 0x10; //low byte b[1] = 0x00; //heigh byte signed short test = 0; test = ByteToShort(b); cout << test << endl; // test 2 - negative B2Short (success) b[0

问题 I understand that the 'natural size' is the width of integer that is processed most efficiently by a particular hardware. When using short in an array or in arithmetic operations, the short integer must first be converted into int . Q: What exactly determines this 'natural size'? I am not looking for simple answers such as If it has a 32-bit architecture, it's natural size is 32-bit I want to understand why this is most efficient, and why a short must be converted before doing arithmetic

问题 The printf family of functions provide a series of length modifiers, two of them being hh (denoting a signed char or unsigned char argument promoted to int ) and h (denoting a signed short or unsigned short argument promoted to int ). Historically, these length modifiers have only been introduced to create symmetry with the length modifiers of scanf and are rarely used for printf . Here is an excerpt of ISO 9899:2011 §7.21.6.1 “The fprintf function” ¶7: 7 The length modifiers and their

问题 Why can I do this: short a = 5; But not this: void setNum(short a); setNum(5); It throws: Possible lossy conversion from int to short I understand that 5 is an integer literal and you have to cast it. I also understand that if the value is not a constant then is obvious that it needs to throw that error because maybe the value reaches the limit of a short type. But why if the compiler knows I'm passing a constant that a short can hold (as in the assignment) it doesn't let it compile? I mean,