variables

问题 I am creating a program for a project that will help me learn visual basic. But when I work out how much a certain material is worth with dimensions. It come out with more than two decimal places. I know how to use math.floor function but it doesn't round to 2 decimal places. Does anyone know what function I should use to round to two decimal places? 回答1: The Decimal.Round method will do the trick for you. You can specify the number of decimal places. 回答2: You can use; Math.Round([DECIMAL], 2

问题 I was wondering if it is possible to dynamically create variables in Go? I have provided a pseudo-code below to illustrate what I mean. I am storing the newly created variables in a slice: func method() { slice := make([]type) for(i=0;i<10;i++) { var variable+i=i; slice := append(slice, variablei) } } At the end of the loop, the slice should contain the variables: variable1, variable2...variable9 回答1: Go has no dynamic variables. Dynamic variables in most languages are implemented as Map

问题 I am new to Java and am trying to access method variables outside of the method, but it doesn't work. Code is below: public class MethodAccess { public static void minus() { int a=10; int b=15; } public static void main(String[] args) { //Here i want to access variable names a & b that is in minus() int c = b - a; } } 回答1: Because a and b are local variables. If you want to access to them in your main method, you need to modify your code. For example : public class methodacess { private

问题 I am new to Java and am trying to access method variables outside of the method, but it doesn't work. Code is below: public class MethodAccess { public static void minus() { int a=10; int b=15; } public static void main(String[] args) { //Here i want to access variable names a & b that is in minus() int c = b - a; } } 回答1: Because a and b are local variables. If you want to access to them in your main method, you need to modify your code. For example : public class methodacess { private

问题 I am new to Java and am trying to access method variables outside of the method, but it doesn't work. Code is below: public class MethodAccess { public static void minus() { int a=10; int b=15; } public static void main(String[] args) { //Here i want to access variable names a & b that is in minus() int c = b - a; } } 回答1: Because a and b are local variables. If you want to access to them in your main method, you need to modify your code. For example : public class methodacess { private

问题 On a click I store a variable. I would like to then trim that variable for all whitespace. I am getting an error when I to simply console.log the new variable. var songToTrim = $(this).html(); console.log(songToTrim); var songToPlay = songToTrim.replace(/ /g,''); console.log(songToPlay); For bonus points if you can add how to make sure the variable is converted to all lowercase that would be huge. If not it'll still work. Thanks! 回答1: Here is my solution Code: $("#test").on('click', function(

问题 This question already has answers here : How do I get current date/time on the Windows command line in a suitable format for usage in a file/folder name? (27 answers) Closed last month . I want to create a folder using this Timestamp: %DATE:/=-%_%TIME::=-% My Robocopy command is : ROBOCOPY "%BUILD_SOURCESDIRECTORY%\sourcefolder\" "\\server\destination\%date:/=-%_%time::=-%" /V but it is not working, getting an error: 2020-04-07T03:53:21.7269608Z ##[error]Process completed with exit code 1.

问题 I am currently using python 3.6, and I was playing around with the id() function. When I run the following code in IDLE, x = 1 print(id(x), id(1)) The two memory addresses are the same. (1499456272 for me) My understanding is the integer 1, which is an object, has a memory address, and when the object is assigned to x, the variable gains the same memory address of the object. (not sure if this is correct) When I replicate the above code using a string, for instance s = "a" print(id(s), id("a"

问题 I am quite new to C but have a lot of experience in C#. My college instructor told me that in "pure" C, it is wrong to initialize the loop variable inside the loops parantheses. He said that it runs because of the VS compiler. For some reasons, all the material in the presentation also shows loops with their loop variable declared outside the parantheses. for (int i=0; i < 5; i++) { //He says that this is wrong, and you will lose points in tests for that } int i; for (i=0; i < 5; i++) { /

问题 I am quite new to C but have a lot of experience in C#. My college instructor told me that in "pure" C, it is wrong to initialize the loop variable inside the loops parantheses. He said that it runs because of the VS compiler. For some reasons, all the material in the presentation also shows loops with their loop variable declared outside the parantheses. for (int i=0; i < 5; i++) { //He says that this is wrong, and you will lose points in tests for that } int i; for (i=0; i < 5; i++) { /