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Custom functions
One of my custom functions calculates certain values("a" and "b") and then
calculates a result relying on "a" and "b". Am I able to use "a" and "b" in another function by getting their value from the first function? function one(x,y,z) a = x + y b = x + z c = a * b end function function two(x,y,z) a = x + y b = x + z d = a / b end function Thanks Peter |
Custom functions
If you declare your variables in the (General)(Declarations) section of the
code module where your function are (that is, declare them outside of any procedures), then they will be "global" to the code module and **any** procedure within that code module will be able to read AND CHANGE them. That "and change them" is very important, especially if you do not declare all your variables since then you could accidentally use the same variable name in an unrelated procedure, change the value there without realizing the effect doing so will have elsewhere and thus screw up some other procedure that is dependent on those variables. If you give your global variables some distinctive feature (say, start each name with "global"), then the odds of accidentally tripping over them is greatly reduced. Now, with all that said, here is an example... Dim A As Long Dim B As Long Function One(X, Y, Z) A = X + Y B = X + Z One = A * B End Function Function Two() Two = A / B End Function Rick "Palpha32" wrote in message ... One of my custom functions calculates certain values("a" and "b") and then calculates a result relying on "a" and "b". Am I able to use "a" and "b" in another function by getting their value from the first function? function one(x,y,z) a = x + y b = x + z c = a * b end function function two(x,y,z) a = x + y b = x + z d = a / b end function Thanks Peter |
Custom functions
Thanks Rick, that works well.....except where I use function one in another
function eg. function three(x) three = one / x end function is this possible? Peter "Rick Rothstein (MVP - VB)" wrote: If you declare your variables in the (General)(Declarations) section of the code module where your function are (that is, declare them outside of any procedures), then they will be "global" to the code module and **any** procedure within that code module will be able to read AND CHANGE them. That "and change them" is very important, especially if you do not declare all your variables since then you could accidentally use the same variable name in an unrelated procedure, change the value there without realizing the effect doing so will have elsewhere and thus screw up some other procedure that is dependent on those variables. If you give your global variables some distinctive feature (say, start each name with "global"), then the odds of accidentally tripping over them is greatly reduced. Now, with all that said, here is an example... Dim A As Long Dim B As Long Function One(X, Y, Z) A = X + Y B = X + Z One = A * B End Function Function Two() Two = A / B End Function Rick "Palpha32" wrote in message ... One of my custom functions calculates certain values("a" and "b") and then calculates a result relying on "a" and "b". Am I able to use "a" and "b" in another function by getting their value from the first function? function one(x,y,z) a = x + y b = x + z c = a * b end function function two(x,y,z) a = x + y b = x + z d = a / b end function Thanks Peter |
Custom functions
Yes, you can embed one function call in another (as long as the return type
is compatible with what the parent function is expecting). In your example, you have this line... Three = One / X but one is declared like this... Function One(X, Y, Z) so you have to specify the arguments when you call it. Your assignment line will have to look like this.. Three = One(Var1, Var2, Var3) / X where Var1, Var2 and Var3 have scope within your Three function. I thought the idea behind your asking about using the Global variables was so that you wouldn't have to do this? Rick "Palpha32" wrote in message ... Thanks Rick, that works well.....except where I use function one in another function eg. function three(x) three = one / x end function is this possible? Peter "Rick Rothstein (MVP - VB)" wrote: If you declare your variables in the (General)(Declarations) section of the code module where your function are (that is, declare them outside of any procedures), then they will be "global" to the code module and **any** procedure within that code module will be able to read AND CHANGE them. That "and change them" is very important, especially if you do not declare all your variables since then you could accidentally use the same variable name in an unrelated procedure, change the value there without realizing the effect doing so will have elsewhere and thus screw up some other procedure that is dependent on those variables. If you give your global variables some distinctive feature (say, start each name with "global"), then the odds of accidentally tripping over them is greatly reduced. Now, with all that said, here is an example... Dim A As Long Dim B As Long Function One(X, Y, Z) A = X + Y B = X + Z One = A * B End Function Function Two() Two = A / B End Function Rick "Palpha32" wrote in message ... One of my custom functions calculates certain values("a" and "b") and then calculates a result relying on "a" and "b". Am I able to use "a" and "b" in another function by getting their value from the first function? function one(x,y,z) a = x + y b = x + z c = a * b end function function two(x,y,z) a = x + y b = x + z d = a / b end function Thanks Peter |
Custom functions
Rick, I think I am going around in circles. I have five functions which all
are independent. All of them rely on a calculation "valid" so that if valid=false then "0" and the function ends. It seems to me that making the same calculation (with the same variables) seems a waste, hence the first question. There are five calculations similar to "valid" that are used in two or more functions. There is also another case where the result of one function is used as a variable other functions, hence the second question. Thanks Peter "Rick Rothstein (MVP - VB)" wrote: Yes, you can embed one function call in another (as long as the return type is compatible with what the parent function is expecting). In your example, you have this line... Three = One / X but one is declared like this... Function One(X, Y, Z) so you have to specify the arguments when you call it. Your assignment line will have to look like this.. Three = One(Var1, Var2, Var3) / X where Var1, Var2 and Var3 have scope within your Three function. I thought the idea behind your asking about using the Global variables was so that you wouldn't have to do this? Rick "Palpha32" wrote in message ... Thanks Rick, that works well.....except where I use function one in another function eg. function three(x) three = one / x end function is this possible? Peter "Rick Rothstein (MVP - VB)" wrote: If you declare your variables in the (General)(Declarations) section of the code module where your function are (that is, declare them outside of any procedures), then they will be "global" to the code module and **any** procedure within that code module will be able to read AND CHANGE them. That "and change them" is very important, especially if you do not declare all your variables since then you could accidentally use the same variable name in an unrelated procedure, change the value there without realizing the effect doing so will have elsewhere and thus screw up some other procedure that is dependent on those variables. If you give your global variables some distinctive feature (say, start each name with "global"), then the odds of accidentally tripping over them is greatly reduced. Now, with all that said, here is an example... Dim A As Long Dim B As Long Function One(X, Y, Z) A = X + Y B = X + Z One = A * B End Function Function Two() Two = A / B End Function Rick "Palpha32" wrote in message ... One of my custom functions calculates certain values("a" and "b") and then calculates a result relying on "a" and "b". Am I able to use "a" and "b" in another function by getting their value from the first function? function one(x,y,z) a = x + y b = x + z c = a * b end function function two(x,y,z) a = x + y b = x + z d = a / b end function Thanks Peter |
Custom functions
I can't tell from this last post of yours... do you still have a pending
question or do you know how to continue now? Rick "Palpha32" wrote in message ... Rick, I think I am going around in circles. I have five functions which all are independent. All of them rely on a calculation "valid" so that if valid=false then "0" and the function ends. It seems to me that making the same calculation (with the same variables) seems a waste, hence the first question. There are five calculations similar to "valid" that are used in two or more functions. There is also another case where the result of one function is used as a variable other functions, hence the second question. Thanks Peter "Rick Rothstein (MVP - VB)" wrote: Yes, you can embed one function call in another (as long as the return type is compatible with what the parent function is expecting). In your example, you have this line... Three = One / X but one is declared like this... Function One(X, Y, Z) so you have to specify the arguments when you call it. Your assignment line will have to look like this.. Three = One(Var1, Var2, Var3) / X where Var1, Var2 and Var3 have scope within your Three function. I thought the idea behind your asking about using the Global variables was so that you wouldn't have to do this? Rick "Palpha32" wrote in message ... Thanks Rick, that works well.....except where I use function one in another function eg. function three(x) three = one / x end function is this possible? Peter "Rick Rothstein (MVP - VB)" wrote: If you declare your variables in the (General)(Declarations) section of the code module where your function are (that is, declare them outside of any procedures), then they will be "global" to the code module and **any** procedure within that code module will be able to read AND CHANGE them. That "and change them" is very important, especially if you do not declare all your variables since then you could accidentally use the same variable name in an unrelated procedure, change the value there without realizing the effect doing so will have elsewhere and thus screw up some other procedure that is dependent on those variables. If you give your global variables some distinctive feature (say, start each name with "global"), then the odds of accidentally tripping over them is greatly reduced. Now, with all that said, here is an example... Dim A As Long Dim B As Long Function One(X, Y, Z) A = X + Y B = X + Z One = A * B End Function Function Two() Two = A / B End Function Rick "Palpha32" wrote in message ... One of my custom functions calculates certain values("a" and "b") and then calculates a result relying on "a" and "b". Am I able to use "a" and "b" in another function by getting their value from the first function? function one(x,y,z) a = x + y b = x + z c = a * b end function function two(x,y,z) a = x + y b = x + z d = a / b end function Thanks Peter |
Custom functions
Thanks Rick, it is working now after a weekend of R&R. I don't understand the
bit about embedding functions and what I tried did not work so I will leave that bit alone. Thanks again' Peter "Rick Rothstein (MVP - VB)" wrote: I can't tell from this last post of yours... do you still have a pending question or do you know how to continue now? Rick "Palpha32" wrote in message ... Rick, I think I am going around in circles. I have five functions which all are independent. All of them rely on a calculation "valid" so that if valid=false then "0" and the function ends. It seems to me that making the same calculation (with the same variables) seems a waste, hence the first question. There are five calculations similar to "valid" that are used in two or more functions. There is also another case where the result of one function is used as a variable other functions, hence the second question. Thanks Peter "Rick Rothstein (MVP - VB)" wrote: Yes, you can embed one function call in another (as long as the return type is compatible with what the parent function is expecting). In your example, you have this line... Three = One / X but one is declared like this... Function One(X, Y, Z) so you have to specify the arguments when you call it. Your assignment line will have to look like this.. Three = One(Var1, Var2, Var3) / X where Var1, Var2 and Var3 have scope within your Three function. I thought the idea behind your asking about using the Global variables was so that you wouldn't have to do this? Rick "Palpha32" wrote in message ... Thanks Rick, that works well.....except where I use function one in another function eg. function three(x) three = one / x end function is this possible? Peter "Rick Rothstein (MVP - VB)" wrote: If you declare your variables in the (General)(Declarations) section of the code module where your function are (that is, declare them outside of any procedures), then they will be "global" to the code module and **any** procedure within that code module will be able to read AND CHANGE them. That "and change them" is very important, especially if you do not declare all your variables since then you could accidentally use the same variable name in an unrelated procedure, change the value there without realizing the effect doing so will have elsewhere and thus screw up some other procedure that is dependent on those variables. If you give your global variables some distinctive feature (say, start each name with "global"), then the odds of accidentally tripping over them is greatly reduced. Now, with all that said, here is an example... Dim A As Long Dim B As Long Function One(X, Y, Z) A = X + Y B = X + Z One = A * B End Function Function Two() Two = A / B End Function Rick "Palpha32" wrote in message ... One of my custom functions calculates certain values("a" and "b") and then calculates a result relying on "a" and "b". Am I able to use "a" and "b" in another function by getting their value from the first function? function one(x,y,z) a = x + y b = x + z c = a * b end function function two(x,y,z) a = x + y b = x + z d = a / b end function Thanks Peter |
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