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I am building a example project with sections using a TableView with this video:
https://www.youtube.com/watch?v=zFMSovtqqUc
When this boy explain exactly at 2 minutes and 55 seconds a list of the variables created in the struct should appear in the list, but it does not.
Can someone help me to understand what I am doing wrong?
Attached a print screen of my Xcode displaying the values where the list of value explained in the video should appear.
I am just a beginner following some video to learn to code.
Thank you very much for your time, I really appreciate it!
The same it's happening to me, look
If for you it's a big problem you can put 2 parenthesis around the value you are creating
This seems to fix the problem.
Conventions
Sorry but I could not avoid this
Objects is a wrong name for a struct (intact struct values are NOT objects)
Implicit unwrapped optionals (like the property of the struct into the example) are dangerous
Variable names should begin with a lowercase char
In Swift we don't put the name of the type of the variable inside the name of the variable.
The variables aren't recognised when there is a ] automatically provided when you type in [ like this:
If you delete the ] as soon as it appears when you type in [, the error is fixed, like so:
Related
This question already has answers here:
How can I call a function from a method of the same name?
(3 answers)
Closed 12 months ago.
The simple actual question is
How to access GLOBAL scope in Dart?
Below is just the answer why I'm looking for it.
I have a problem which requires me to learn about Dart's scope resolution from here but unfortunately I can't find the solution for my problem, not even from Google or here, which was surprising me to have to open this question.
Dart allows user to exclude the this. on member variable access within class's scope so if two potentially conflicted variables need to share the same name, they need to be differentiated with scope operator and reference.
I need to define a class with member variable print where there is also global function print being called somewhere within the class. Of course print() => print(...) will returns error so I'm expecting something as simple as print() => global.print(..) but neither that is working.
I know there's workaround to solve it but please I need a straightforward one if any. Thank you.
you could add this line at the top of your file:
import 'dart:core' as core;
Then you would be able to refer to print as core.print(...);
The problem is that now you would have to use core. for every primitives like int, example:
core.int variable = 1;
I think this is not worth it and it's better to use another name for your print method.
I am facing a strange error when writing the simplest of swift programs in Xcode 12.0.1.
It says that it can't find T1 in scope when it is very much in scope. I feel that it must be trivial to solve this problem, and I tried ⌘ + ⇧ + K and closed Xcode and reopened, but the problem persists. Anyone knows how this can be solved?
Sometimes there are ghost errors that seem to not go away, even when Xcode is closed and reopened, but are fixed by either changing the code then changing it back, or clicking build anyway and the build succeeds.
Otherwise, the color highlighting of T1 in the return doesn't match in the variable declaration. That suggests name clashing. Are there any types or global variables called T1, even if there's nothing else in your code maybe it's a built-in type or similar? Try naming the variable differently.
I got the same error and was searching around, but couldn't find an answer to it so I'll share it here for others to find as well. For my part, I was creating a view in a package and was referencing that view from an app.
I got the Cannot find [Type] in scope and turns out I forgot to put the public attribute on the view struct.
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I'm building a class, and, when defining one of the functions, I get the error "Use of extraneous '&'". I don't know what it means, and I can't tell what I'm doing wrong.
I'm using Xcode 10.1. I'm trying to update a dictionary (named numOrders) contained in a Struct (named bidBook) by using the notation bidBook.numOrders[order.price] += 1 (where order.price is a variable contained in another Struct).
Lines 71, 72 and 87, 88 in main.swift produce the error.
The code can be found at https://github.com/cgit2017/Thesis in Thesis/main.swift.
I am not sure why that error happens, but for me it disappears when I change the lines to
bidBook.numOrders[order.price]! += 1
bidBook.priceSize[order.price]! += order.quantity
EDIT: Previously I assumed that it was due to bidBook.numOrders[order.price] returning an optional. This is not the issue since it works fine in other lines. Nevertheless the approach above works for me.
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Closed 8 years ago.
This question appears to be off-topic because it lacks sufficient information to diagnose the problem. Describe your problem in more detail or include a minimal example in the question itself.
Questions concerning problems with code you've written must describe the specific problem — and include valid code to reproduce it — in the question itself. See SSCCE.org for guidance.
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I copied code from here but I'm getting an error when trying to run the code.
The problem would be in:
Public NextItem As New queueItem
and the error message is:
user-defined type not defined
Is my VBA version not right to do this or am I doing something wrong?
You probably mean this link? The one you provided has the alternative implementation (with arrays, not with references).
I got it to work for me. Steps:
Right click on the VBA project file name, and go to Insert-> Class Module:
Click F4. The Properties window appears. Then go to the class Name and change it to Queue:
Copy and Paste the Queue Class code you found at the web site. Repeat the previous and this step for the QueueItem class (i.e., insert a Class Module, name it QueueItem and copy the code inside that class module).
This time, insert a Module using the same process (not a Class Module, but rather a simple Module). You do not need to give your module a name, Module1 will be OK.
Copy the Sub TestQueue() inside the module and run it. It should work. If you use Option Explicit on your module, you will get an error that element is undefined. So we need to define it: Dim element as Variant, under the first few Dim statements of the subroutine. Then it should run.
The above worked for me, let me know if I can be more precise, or send the file to you.
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i am trying to call service by passing xml request. but i am getting error in response xml. Can you please help in this problem. I am using soapUI and i have set credential in request header. Response : soapenv:Server.userException org.xml.sax.SAXException: SimpleDeserializer encountered a child element, which is NOT expected, in something it was trying to deserialize.
It sounds as though you're sending it an element it's not expecting, i.e. your request is invalid for some reason. Check it with a lint tool to ensure it's valid, then double check the spec for the service you're making the request to.
Failing that, you'll need to provide a lot more information to get a better answer.
I met the same exception, for me , the reason is the wrong returnType, my returnType was set by String when I called, but the real returnType is document, my way to resolve this problem is like the following:
call.setReturnType(org.apache.axis.encoding.XMLType.SOAP_STRING);
Change to
call.setReturnType(org.apache.axis.encoding.XMLType.SOAP_DOCUMENT);