I am just starting out in Xcode6 and using Playground to test out some Swift commands. I test a simple var a = 10, var b = 15 and var total = a+b
So far so good. But when I change value of a from 10 to 20, it doesn't seem to be updated. The calc. still reflects 10+15 vs. 20+15. This sounds silly but how come variable values aren't updated? Should I be using different variables or doing something else? I would have expected the 'right panel' to update instantly with my changes. Thanks!
Related
I'm trying to make it so that when you use a proximity prompt an image label becomes visible but it's not working, how do I fix this?
local proximity = workspace.Cardpack.ProximityPrompt
local proximityPromptService = game.GetService("ProximityPromptService")
proximity.Triggered:Connect(function()
_G.visible = not _G.visible game.Workspace.Inventory.Frame.X1.Visble = _G.visible
end)
You don't really need to use _G for this. Instead, we can directly declare it to the X1.
local prompt = workspace.Cardpack.ProximityPrompt
local x1 = workspace.Inventory.Frame.X1
prompt.Triggered:Connect(function()
x1.Visible = not x1.Visible
end)
_G.visible = not _G.visible game.Workspace.Inventory.Frame.X1.Visble = _G.visible
This is where your script goes entirely wrong. This is not LUA syntax and is not how programming works. This is actually what you are currently trying to do.
local value = true = false;
Really what you should be doing is creating a reference to the ImageLabel you are trying to set. Then change it's properties. Setting a variable in the global enviroment won't change the ImageLabel's properties.
local ProximityPromptService = game.GetService("ProximityPromptService");
local ImageLabel = workspace.Inventory.Frame.X1;
local Proximity = workspace.Cardpack.ProximityPrompt;
proximity.Triggered:Connect(function()
ImageLabel.Visible = true;
end)
This seems to be a simple issue which can be solved with a simple solution (granted you know what you're doing). Now here's some things to note:
You don't need to use the ;'s you see on almost every line people make. It's not something mandatory and shouldn't be. Though it's good for when you want to have less lines (if it's your preference).
You wouldn't want to have 2 ='s on the same line as it's not the correct syntax (as #sl0th has stated), you cannot attempt such a task as it wouldn't even work. You want it to not just change it back to false anyways.
As you code this, I don't believe you fully understand how it works, and to make the code you first of all have to understand COMPLETELY or rather fluently how it works. So let's start off with that!
How do we do this? Let's see:
-- Perhaps put the script INSIDE of the Cardpack, and then do it from here.
-- Also, I'm not sure why you've put an "inventory.Frame" here, if it's a screengui then it should go in StarterGui, however if it's a billboardgui then please ignore me.
local Cardpack = script.Parent -- I've added it inside the cardpack as said.
local Prompt = Cardpack.ProximityPrompt
local Label = workspace.Inventory.Frame.X1 -- using the original directory as I don't know how your explorer looks.
local CanBeVisible = false -- if you want to toggle it.
Prompt.Triggered:Connect(function() -- make sure to look up on devforum about this.
if not CanbeVisible then -- "not CanBeVisible" is equivalent to "CanBeVisible==false".
CanBeVisible = true
Label.Visible = true
else -- if it's true and not false:
CanBeVisible = false
Label.Visible = false
end
end)
This is a more..."Acceptable" way of coding. People have their preferences, but this is generally how I'd do it based on how you did it. IF you don't understand much I'm always here to help, of course! :D
FINAL NOTES:
local A,B = "A", "B" -- you can assign multiple variables on a single line!
A,B = "B", "A" -- and you can also change more than one on the same line too.
local A = "A";print(A) -- that's how ; is used if you want to do more than one thing on the same line (but not done at the the same time on the same line!). ; Seperates the code without needing to add spaces, though adding/casting variables you should stick to using the comma(s) to separate them assigning new values and whatnot.
Also, you don't even need that ProximityPromptService variable as you never even use it! And you can't just do game.GetService(..), you IDEALLY do it as game:GetService(..).
I hope this helped you and if it did, mark this as the answer! Though this is my first time trying to help people I tried my best lol.
The 1..T function is not working for me, and I don't know why. My code looks like this:
set TIME;
data;
set TIME = 1..8760 by 3;
display TIME;
Here I want it to display 1, 4, 7, 10, and so on, but it just goes 1..8760 by 3. How can I fix this so that I don't have to write 8,760 different numbers?
Thankful for answers!
I don't find any error in your code. I tried in my AMPL IDE:
AMPL IDE
I suppose that when you write "data" is that your code is in the .dat file and when you write "display" is your .run file
What are you using to write your model?? NEOS SERVER or the IDE??
Regards!
Try deleting the first two lines of your code.
It looks as if the format you're using to specify TIME only works in "model" mode; in "data" mode, the same text is interpreted as declaring a set of literals "3", "by", and "1..8760". (Quick test: if you type display card(TIME); you get a value of 3, telling you that there are exactly 3 members in this set.)
Section 5.2 of the AMPL Book recommends using a "x..y by z" type declaration in the model (with x, y, z as declared params) and then specifying values for x, y, z in the data.
Note that starting at 1 and increasing in steps of 3 won't actually get to 8760 exactly, so you might want to change your start to 0 or 3, or your end to 8761, if you want equal gaps between the numbers.
I'm trying to figure this out and I must be overlooking something basic. (It took me WAAAY longer than it should have just to realize I hadn't added the trigger.)
When forms are submitted, if that page runs out of rows, it automatically expands. I have a reconciliation page where it is pulling the submitted data over line by line and analyzing it for discrepancies (the form collects billable time and tasks.)
So while the Form Responses 1 page will expand, I want to use a trigger on form submit to add a line to the reconciliation page and copy the formulas down. I can't seem to get the line to add though. Looking at the google page for expanding the number of rows, I'm not sure what I am doing wrong there either but I THINK I need to add more java features to my computer.
If I simply copy and paste the example into a new sheet, most of the code is black instead of the standard editor colors. Saving pops up "Missing ; before statement. (line 1, file "Code")"
Line one is simply "import com.google.gdata.client.spreadsheet.*;"
So zerothly: Whats the most basic code I can use to add that blank row?
Then first: Do I need to import a bunch of stuff to get this (adding rows) to work?
Second: If so, and I transfer ownership of the sheet to someone, do they need to do the imports also?
Third: If so, and I want to do edits on another device, will I need to do imports there too?
Fourth: The example uses Update() but I can't seem to find an Update() function in javascript or googlesheets api documentation.
This is the code I am trying and variations commented out which doesn't seem to work:
function onFormSubmit(e) {
Logger.log('form submit triggered')
var sheet = SpreadsheetApp.getActive()
var sss = sheet.getSheetByName('Reconciliation')
var col2 = sss.getRange("B:B");
var col2val = col2.getValues();
var counter = 0;
var sssrange = sss.getDataRange();
// sss.Rows = sss.getLastRow() + 1 //Object does not allow properties to be added or changed if I uncomment - this seems to match the google example line though
Logger.log(sss.getLastRow());//=8
var newsssrange = sssrange.offset(1,0); // didn't actually think this would work (since it also had the .update() part that previously didn't work for me) but came across it and was getting desparate.
// sss.setRowCount(sss.getLastRow() + 1); // TypeError: Cannot find function setRowCount in object Sheet.
Logger.log(sss.getLastRow()); //=8
// sss.Update();//TypeError: Cannot find function Update in object Sheet.
}
Sigh... I am still wondering how to add more rows but I did answer my original need of adding a single line since form submits only add a single line. So I'm going to answer it since I had done so many searches and for some reason this never came up, maybe someone will find this useful if they are having the same issue.
function onFormSubmit(e) {
var sheet = SpreadsheetApp.getActive()
var sss = sheet.getSheetByName('Reconciliation')
sss.appendRow(['']);
}
Note that this adds a single blank line. If you run it a second time it won't add a second blank line as appendRow() adds after the last line with data. If you put a string in there or something and run it over and over you will get multiple lines.
I really would like to know about adding multiple lines though also since that will come up and I still seem to be missing something, probably obvious.
Did you know that arrayformula woluld make new lines automatically.? If you paste this formula in Sheet2:
=OFFSET(Sheet1!A1,,,counta(Sheet1!A:A))
and then paste new values in Sheet1 range A:A, then new rows would be added on Sheet2.
I'm trying to activate a running application, but can't seem to get the app.activateWithOptions call correct as each of the four attempts below result in compile time errors.
import AppKit
var ws = NSWorkspace.sharedWorkspace()
var apps = ws.runningApplications
var app :NSRunningApplication
for app in apps {
if (app.activationPolicy == NSApplicationActivationPolicy.Regular) {
app.activateWithOptions(options: ActivateIgnoringOtherApps)
app.activateWithOptions(options: NSApplicationActivateIgnoringOtherApps)
app.activateWithOptions(options: NSRunningApplication.ActivateIgnoringOtherApps)
app.activateWithOptions(options: NSRunningApplication.NSApplicationActivateIgnoringOtherApps)
println(app.localizedName)
}
}
The declaration var app : NSRunningApplication is pointless, because the app in the for...in line declares a different app. You should just delete that line, as it is misleading you and is utterly pointless and confusing.
Thus, it is that app, the one in the for...in that you need to specify the type of. You won't get any further in this attempt to compile until you fix that:
for app in apps as [NSRunningApplication] {
Now you can begin to fix your errors, one by one. I'll just give you a hint for the first one; it should be:
app.activateWithOptions(.ActivateIgnoringOtherApps)
The remaining three lines are left as an exercise for the reader! Even then you will still be in some trouble, though, because you are not combining the options - instead, you are activating the same app four separate times, which is silly and not at all what you want. You should combine the options first and then active the app once.
On the whole, it looks from your code as if you do not know Swift at all. You really should stop and learn it before you try to use it. Otherwise you'll just be flailing (as you clearly are now).
Thanks for the answer Matt. I'll add that if you are looking for just your application (rather than you can add a line before activating it. The following two lines will assign your application to the constant "app" and then activates it. This is useful for when yo want to get an NSAlert on the screen from an app running in the background.
let app = NSRunningApplication.currentApplication()
app.activateWithOptions(.ActivateIgnoringOtherApps)
let user_choice = alert.runModal()
According to my understanding of the documentation, this should be correct:
var cookies: [NSHTTPCookie] = NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies as [NSHTTPCookie]
where I'm creating an array of NSHTTPCookie objects. The interpreter does not like this syntax, however, giving me "Expected type after 'as'" and putting a little pointer at the opening bracket of the [NSHTTPCookie] at the end.
However, this works:
var cookies:NSHTTPCookie[] = NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies as NSHTTPCookie[]
From the documentation, it seems like the first version is more correct, however.
Here's another example, this time with someone else's code. No one else using this code has reported the same behavior I get. (This is just a snippet; if the context is relevant let me know and I'll post more)
func asDict(x: AnyObject) -> [String:AnyObject]? {
return x as? [String:AnyObject]
}
In this case the playground interpreter objects in both places [String:AnyObject] is used. It just doesn't seem to be recognizing it as a type.
I double-checked to make sure I have the most recent beta of Xcode 6, but it seems much more likely to me that the problem is in my understanding rather than in the tool, since this would be a mighty big bug for only me to experience.
You must be using an old beta, this works in Beta 5 playground:
import Foundation
println("hello")
var cookies:[NSHTTPCookie] = NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies as [NSHTTPCookie]
println("goodbye")