Int Variable won't let me add data from UI text field
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I'm currently working on making a savings app in Xcode 10. I'm working on a feature that lets users add the amount of money they have saved for something into the app through a UI text field. I can't find a way to return the text from the text field to an Integer and add that to the total sum of money that has been saved. Also whenever I tried to add a test variable I got plenty of errors.
var amountSavedSoFar += amountOfMoneySaved
Both I have set to be integers. I'm trying to set amountOfMoneySaved equal to the numbers in the text field, but it doesn't seem to work.
'+=' is not a prefix unary operator
Consecutive statements on a line must be separated by ';'
Type annotation missing in pattern
Unary operator cannot be separated from its operand
ios swift
asked Nov 11 at 21:31
Evan
83
add a comment |
up vote
-3
down vote
favorite
I'm currently working on making a savings app in Xcode 10. I'm working on a feature that lets users add the amount of money they have saved for something into the app through a UI text field. I can't find a way to return the text from the text field to an Integer and add that to the total sum of money that has been saved. Also whenever I tried to add a test variable I got plenty of errors.
var amountSavedSoFar += amountOfMoneySaved
Both I have set to be integers. I'm trying to set amountOfMoneySaved equal to the numbers in the text field, but it doesn't seem to work.
'+=' is not a prefix unary operator
Consecutive statements on a line must be separated by ';'
Type annotation missing in pattern
Unary operator cannot be separated from its operand
ios swift
asked Nov 11 at 21:31
Evan
83
var amountSavedSoFaris undefined when you try to addamountOfMoneySavedto it - it just doesn't make sense
– MadProgrammer
Nov 11 at 21:32
Please post code as text, not as a picture.
– rmaddy
Nov 11 at 22:06
@MadProgrammer I do have it defined. Sorry for not posting it with the code. Its var amountOfMoneySaved = amountSaved.text (Amount saved is my text field)
– Evan
Nov 11 at 22:23
@Evan Based on the code you've provided,amountSavedSoFaris NOT defined when you attempt to add itself and something to it. You can only "assign" a value when you declare it. Thisvar amountSavedSoFar += amountOfMoneySaveddoes not make sense
– MadProgrammer
Nov 11 at 22:25
add a comment |
up vote
-3
down vote
favorite
up vote
-3
down vote
favorite
I'm currently working on making a savings app in Xcode 10. I'm working on a feature that lets users add the amount of money they have saved for something into the app through a UI text field. I can't find a way to return the text from the text field to an Integer and add that to the total sum of money that has been saved. Also whenever I tried to add a test variable I got plenty of errors.
var amountSavedSoFar += amountOfMoneySaved
Both I have set to be integers. I'm trying to set amountOfMoneySaved equal to the numbers in the text field, but it doesn't seem to work.
'+=' is not a prefix unary operator
Consecutive statements on a line must be separated by ';'
Type annotation missing in pattern
Unary operator cannot be separated from its operand
ios swift
asked Nov 11 at 21:31
Evan
83
I'm currently working on making a savings app in Xcode 10. I'm working on a feature that lets users add the amount of money they have saved for something into the app through a UI text field. I can't find a way to return the text from the text field to an Integer and add that to the total sum of money that has been saved. Also whenever I tried to add a test variable I got plenty of errors.
var amountSavedSoFar += amountOfMoneySaved
Both I have set to be integers. I'm trying to set amountOfMoneySaved equal to the numbers in the text field, but it doesn't seem to work.
'+=' is not a prefix unary operator
Consecutive statements on a line must be separated by ';'
Type annotation missing in pattern
Unary operator cannot be separated from its operand
ios swift
ios swift
asked Nov 11 at 21:31
Evan
83
asked Nov 11 at 21:31
Evan
83
edited Nov 11 at 22:21
asked Nov 11 at 21:31
Evan
83
asked Nov 11 at 21:31
Evan
83
asked Nov 11 at 21:31
Evan
83
83
var amountSavedSoFaris undefined when you try to addamountOfMoneySavedto it - it just doesn't make sense
– MadProgrammer
Nov 11 at 21:32
Please post code as text, not as a picture.
– rmaddy
Nov 11 at 22:06
@MadProgrammer I do have it defined. Sorry for not posting it with the code. Its var amountOfMoneySaved = amountSaved.text (Amount saved is my text field)
– Evan
Nov 11 at 22:23
@Evan Based on the code you've provided,amountSavedSoFaris NOT defined when you attempt to add itself and something to it. You can only "assign" a value when you declare it. Thisvar amountSavedSoFar += amountOfMoneySaveddoes not make sense
– MadProgrammer
Nov 11 at 22:25
add a comment |
var amountSavedSoFaris undefined when you try to addamountOfMoneySavedto it - it just doesn't make sense
– MadProgrammer
Nov 11 at 21:32
Please post code as text, not as a picture.
– rmaddy
Nov 11 at 22:06
@MadProgrammer I do have it defined. Sorry for not posting it with the code. Its var amountOfMoneySaved = amountSaved.text (Amount saved is my text field)
– Evan
Nov 11 at 22:23
@Evan Based on the code you've provided,amountSavedSoFaris NOT defined when you attempt to add itself and something to it. You can only "assign" a value when you declare it. Thisvar amountSavedSoFar += amountOfMoneySaveddoes not make sense
– MadProgrammer
Nov 11 at 22:25
var amountSavedSoFar is undefined when you try to add amountOfMoneySaved to it - it just doesn't make sense– MadProgrammer
Nov 11 at 21:32
var amountSavedSoFar is undefined when you try to add amountOfMoneySaved to it - it just doesn't make sense– MadProgrammer
Nov 11 at 21:32
Please post code as text, not as a picture.
– rmaddy
Nov 11 at 22:06
Please post code as text, not as a picture.
– rmaddy
Nov 11 at 22:06
@MadProgrammer I do have it defined. Sorry for not posting it with the code. Its var amountOfMoneySaved = amountSaved.text (Amount saved is my text field)
– Evan
Nov 11 at 22:23
@MadProgrammer I do have it defined. Sorry for not posting it with the code. Its var amountOfMoneySaved = amountSaved.text (Amount saved is my text field)
– Evan
Nov 11 at 22:23
@Evan Based on the code you've provided,
amountSavedSoFar is NOT defined when you attempt to add itself and something to it. You can only "assign" a value when you declare it. This var amountSavedSoFar += amountOfMoneySaved does not make sense– MadProgrammer
Nov 11 at 22:25
@Evan Based on the code you've provided,
amountSavedSoFar is NOT defined when you attempt to add itself and something to it. You can only "assign" a value when you declare it. This var amountSavedSoFar += amountOfMoneySaved does not make sense– MadProgrammer
Nov 11 at 22:25
add a comment |
1 Answer
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oldest
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up vote
0
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You've got a few issues as you mentioned:
amountSavedSoFaris declared in thesaveAmountfunction and will not be persisted if you call that function more than once.
amountSaved.textis not being converted from String to the appropriate type (Int, Double, etc.)
amountSavedSoFarisn't typed or initialized.
Try something like:
var amountSavedSoFar: Int = 0
@IBAction func saveAmount(_ sender: Any) {
//Convert the text and default to zero if conversion fails
amountSavedSoFar += Int(amountSaved.text) ?? 0
}
answered Nov 11 at 22:22
Mark Thormann
1,036712
Seemed to do trick. Will every time the code run will the amountSavedSofar reset back to 0 though?
– Evan
Nov 11 at 22:35
No, it will retain its value assuming you're talking about just callingsaveAmount.
– Mark Thormann
Nov 12 at 15:58
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
You've got a few issues as you mentioned:
amountSavedSoFaris declared in thesaveAmountfunction and will not be persisted if you call that function more than once.
amountSaved.textis not being converted from String to the appropriate type (Int, Double, etc.)
amountSavedSoFarisn't typed or initialized.
Try something like:
var amountSavedSoFar: Int = 0
@IBAction func saveAmount(_ sender: Any) {
//Convert the text and default to zero if conversion fails
amountSavedSoFar += Int(amountSaved.text) ?? 0
}
answered Nov 11 at 22:22
Mark Thormann
1,036712
Seemed to do trick. Will every time the code run will the amountSavedSofar reset back to 0 though?
– Evan
Nov 11 at 22:35
No, it will retain its value assuming you're talking about just callingsaveAmount.
– Mark Thormann
Nov 12 at 15:58
add a comment |
up vote
0
down vote
accepted
You've got a few issues as you mentioned:
amountSavedSoFaris declared in thesaveAmountfunction and will not be persisted if you call that function more than once.
amountSaved.textis not being converted from String to the appropriate type (Int, Double, etc.)
amountSavedSoFarisn't typed or initialized.
Try something like:
var amountSavedSoFar: Int = 0
@IBAction func saveAmount(_ sender: Any) {
//Convert the text and default to zero if conversion fails
amountSavedSoFar += Int(amountSaved.text) ?? 0
}
answered Nov 11 at 22:22
Mark Thormann
1,036712
Seemed to do trick. Will every time the code run will the amountSavedSofar reset back to 0 though?
– Evan
Nov 11 at 22:35
No, it will retain its value assuming you're talking about just callingsaveAmount.
– Mark Thormann
Nov 12 at 15:58
add a comment |
up vote
0
down vote
accepted
up vote
0
down vote
accepted
You've got a few issues as you mentioned:
amountSavedSoFaris declared in thesaveAmountfunction and will not be persisted if you call that function more than once.
amountSaved.textis not being converted from String to the appropriate type (Int, Double, etc.)
amountSavedSoFarisn't typed or initialized.
Try something like:
var amountSavedSoFar: Int = 0
@IBAction func saveAmount(_ sender: Any) {
//Convert the text and default to zero if conversion fails
amountSavedSoFar += Int(amountSaved.text) ?? 0
}
answered Nov 11 at 22:22
Mark Thormann
1,036712
You've got a few issues as you mentioned:
amountSavedSoFaris declared in thesaveAmountfunction and will not be persisted if you call that function more than once.
amountSaved.textis not being converted from String to the appropriate type (Int, Double, etc.)
amountSavedSoFarisn't typed or initialized.
Try something like:
var amountSavedSoFar: Int = 0
@IBAction func saveAmount(_ sender: Any) {
//Convert the text and default to zero if conversion fails
amountSavedSoFar += Int(amountSaved.text) ?? 0
}
answered Nov 11 at 22:22
Mark Thormann
1,036712
answered Nov 11 at 22:22
Mark Thormann
1,036712
answered Nov 11 at 22:22
Mark Thormann
1,036712
answered Nov 11 at 22:22
Mark Thormann
1,036712
1,036712
Seemed to do trick. Will every time the code run will the amountSavedSofar reset back to 0 though?
– Evan
Nov 11 at 22:35
No, it will retain its value assuming you're talking about just callingsaveAmount.
– Mark Thormann
Nov 12 at 15:58
add a comment |
Seemed to do trick. Will every time the code run will the amountSavedSofar reset back to 0 though?
– Evan
Nov 11 at 22:35
No, it will retain its value assuming you're talking about just callingsaveAmount.
– Mark Thormann
Nov 12 at 15:58
Seemed to do trick. Will every time the code run will the amountSavedSofar reset back to 0 though?
– Evan
Nov 11 at 22:35
Seemed to do trick. Will every time the code run will the amountSavedSofar reset back to 0 though?
– Evan
Nov 11 at 22:35
No, it will retain its value assuming you're talking about just calling
saveAmount.– Mark Thormann
Nov 12 at 15:58
No, it will retain its value assuming you're talking about just calling
saveAmount.– Mark Thormann
Nov 12 at 15:58
add a comment |
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var amountSavedSoFaris undefined when you try to addamountOfMoneySavedto it - it just doesn't make sense– MadProgrammer
Nov 11 at 21:32
Please post code as text, not as a picture.
– rmaddy
Nov 11 at 22:06
@MadProgrammer I do have it defined. Sorry for not posting it with the code. Its var amountOfMoneySaved = amountSaved.text (Amount saved is my text field)
– Evan
Nov 11 at 22:23
@Evan Based on the code you've provided,
amountSavedSoFaris NOT defined when you attempt to add itself and something to it. You can only "assign" a value when you declare it. Thisvar amountSavedSoFar += amountOfMoneySaveddoes not make sense– MadProgrammer
Nov 11 at 22:25