I'm making an app that will eventually have a second view controller that displays a grid of information from results of previous days. I've already worked out the app to gather the information I need, which would look as follows:
var s = 0
var d = 0
var h = 0.0
var m = 0.0
var date = NSDate()
So I'm wondering how I can run a function to prep these numbers to be used in a grid in a different view controller later on. There may be no other way to do it than to send it to an outside database, but I'd rather not do that. I think I'm going to want to use either a struct or a class maybe. Maybe I only need a dictionary? I don't know, but I'm going to want to save this information at the end of every day. I could write some psuedo code, but I'm not sure how to do this.
func saveDailyResults() {
??? date = {
s, d, h, m
}
allDates.append(){
date
}
}
I think what I'm looking for would be a way to make some thing like this:
var allResultsFromAllDays = [(2016-08-08, 2, 302, 2.3, 4.5),(2016-08-07, 1, 247, 2.4, 4.7),(2016-08-06, 3, 345, 2.9, 6.5)]
...Which I could append every day when new results come in.
I'd like to be able to later on build something that looks like this from the information.
Thanks for any help you can give me!
Related
I made a few functions with GoogleSheets using AppsScripts for simple task a few times in previous years. I always had problems when taking dates from cells/ranges and processing them, but somehow alwaays found a workaround, so that I did not have to deal with it. Well, this time I can not find a workaround, so I will try to explain my problems with the following code:
function getDates(){
var s = SpreadsheetApp.getActiveSpreadsheet();
var sht = s.getSheetByName('Dates');
var date = sht.getRange(2,1).getValues();
Logger.log(date[0][0]); //output is Tue Jun 08 18:00:00 GMT-04:00 2021
var datumFilter= Utilities.formatDate(date[0][0], "GMT+1", "dd/mm/yy");
Logger.log(datumFilter); //output is 08/00/21
var outrng = sht.getRange(25,1);
outrng.setValue(date);
}
The first targeted cell ('var date') has a value of "9.6.21" in the spreadsheet. The cell is formatted as a date and it opens a calendar when double-clicked. When I set the new cells values (with 'outrng.setValue(date);'), the result is OK, with the same date as in the original cell.
But I do not need to simply transfer the values, I want to implement them in some loops and I have no idea how to simply get the date in the same format or at least the same date in the script as it is in the cell. As you can see from the logger, the values there are different. A simple d/m/yy format would be sufficient.
My spreadsheet settings are set to my local time (Slovenia, GMT+1).
I am guessing that I am missing some basics here. I have spent many hours trying to understand it, so any help is highly appreciated!
Cooper already answered all your questions in the comment. I'd like to add on and show you an example on what it would like and add some modifications.
Code:
function getDates() {
var s = SpreadsheetApp.getActiveSpreadsheet();
var sht = s.getSheetByName('Dates');
// get last row of the sheet
var lastRow = sht.getLastRow();
// get your sheet's timezone
var timezone = SpreadsheetApp.getActive().getSpreadsheetTimeZone();
var output = [];
// getValues is mostly used for multiple cells returning a 2D array
// use getValue for single cells to return its actual value
// but since function name is getDates, I assume column A is all dates
// so we fetch the whole column (A2:A[lastRow]) except the header
var dates = sht.getRange("A2:A" + lastRow).getValues();
// for each date on that column, we format the date to d/M/yy
// m/mm = minute
// M/MM = month
dates.forEach(function ([date]){
Logger.log(date);
var datumFilter= Utilities.formatDate(new Date(date), timezone, "d/M/yy");
Logger.log(datumFilter);
// collect all dates in an array
output.push([datumFilter]);
});
// assign all the dates in the array onto range B2:B
sht.getRange(2, 2, output.length, 1).setValues(output);
}
Sample data:
Logs:
Output:
Note:
The output on sheets is not equal to logs due to the formatting of my sheet.
I am currently building an app to teach myself Swift so am still very new. I’ve encountered a problem. The app is a timetable creator. I have up to twelve subjects that all have points. These points are then spread across days. I have a concept for code that will allocate the points fine using loops but wondered whether there was something to reduce the amount of code rather than, what I currently have, something like this for each subject:
subject1.monpts = 20
subject1.tuepts = 20
subject1.wedpts = 20
subject1.thurpts = 20
subject1.fripts = 20
subject1.satpts = 20
subject1.sunpts = 20
This, x12, is a lot of code. But I need it so that each subject has an option for points for each day of the week (which the app will then allocate time based on these points). To print the timetable, I am putting each subjectX.daypts together but this means I’m writing out 12 subjects for each day.
I also need to only display something if the variable actually has a value. I plan to do this using if statements but that means writing a statement for every single variable which at the moment is 12 x 7 = 48! E.g. (ignore the formating - just for concept)
if subjects1.monpts = 0 {
subjects1monLabel = isHidden.false
// or just a print / don't print statement
}
I feel as if I'm missing an easier way to do this!
Here is a picture that explains the concept a bit better:
If you want to save information about those fields you can have a dictionary with keys of a enum and values of ints like so:
enum WeekDay: CaseIterable {
case monday, tuesday, wednesday, thursday, friday, saturday, sunday
}
struct Subject {
var pointsForWeekDay: [WeekDay: Int]
}
Now you could do:
var pointsForWeekDay = Dictionary(uniqueKeysWithValues:
WeekDay.allCases.map { weekDay in
return (weekDay, 20)
}
)
var subject = Subject(pointsForWeekDay: pointsForWeekDay)
CaseIterable allows you to access all values of your enum.
Map takes every weekDay and creates an array of tuples with your Int values.
And finally you can combine that to have a complete Dictionary with uniqueKeysWithValues initializer, which takes an array of the produced tuples.
Your whole vision of how to organize this material is upside down. Start by thinking about what all your subjects have in common: points for each of the seven days, label hidden for each of the seven days, and so forth. Now incorporate that into a type (a struct): Subject. Now instead of subjects1..., subjects2... and so forth, you have an Array of Subject.
So: any time you have variables named with a number, that should be an array instead. Any time you have clumps of repeated concepts, that should be a type instead.
Even the notion of the seven days of the week could itself be condensed in the same way. If all we're talking about is points per day, an array of seven numbers would do.
So we'd end up with a skeleton like this:
struct Subject {
var dayPoints : [Int]
}
var myTwelveSubjects : [Subject]
...and you can build that out as more requirements come online, such as whether a day is hidden.
I was playing with swift's Data in the following a small code:
var d = Data(count: 10)
d[5] = 3
let d2 = d[5..<8]
print("\(d2[0])")
To my surprise, this code throws exception on print() while the following code does not:
var d = Data(count: 10)
d[5] = 3
let d2 = d.subdata(in: 5..<8)
print("\(d2[0])")
I somehow understand why this happens, but I don't get why this is designed like this. When I use subdata() I get a whole copy of range, so indexing is valid from 0. But when I use range subscribe [], I get access to the requested range while indexing is the same as before. So in my first example d2[5] is 3.
But I wonder why it is designed like this? I don't want to make a copy of my data by using subdata() method. I just wanted to access a portion of my data with better indexing.
This is especially creates unexpected behaviors if you pass it to a function. For example, following code creates unexpected results and exceptions and you may not find out easily why:
func testit(idata: Data) {
if idata.count > 0 {
print("\(idata.count)")
print("\(idata[0])")
}
}
//...
var d = Data(count: 10)
d[5] = 3
let d2 = d[5..<8]
testit(idata: d2)
This code is really strange. Because if you debug your code, you see that print("\(idata.count)") prints 3 as size of idata which is correct, but accessing it with idata[0] creates exception.
Is there any reason for this design? I was expecting that I could access resulting Data from subscribe starting index 0 while it is not true. Can I do this without using subdata() which creates copy of data or using additional arguments to pass base of data slice?
d[5..<8] returns Data.Slice – which happens to be Data. Generally, slices share the indices with their base collection, as documented in Slice.
One possible reason for this design decision is that it guarantees that subscripting a slice is a O(1) operation (adding an offset for accessing the base collection is not necessarily O(1), e.g. not for strings.)
It is also convenient, as in this example to locate the text after the second occurrence of a character in a string:
let string = "abcdefgabcdefg"
// Find first occurrence of "d":
if let r1 = string.range(of: "d") {
// Find second occurrence of "d":
if let r2 = string[r1.upperBound...].range(of: "d") {
print(string[r2.upperBound...]) // efg
}
}
As a consequence, you must never assume that the indices of a collection are zero-based (unless documented, as for Array.startIndex). Use startIndex to get the first index, or first to get the first element.
I am using version 3.1.1 of the popular charts library for iOS. I have run into an issue with x-axis labeling that I can't seem to find the answer for online:
Let's say I want to have a chart with one x-axis label for every day of the week (namely: S, M, T, W, T, F, S). Lots of forums I've read suggest taking the approach of setting a custom value formatter on the x-axis as suggested here: https://github.com/danielgindi/Charts/issues/1340
This works for calculating labels on days for which I have data. The issue I'm running into with this approach is that if I don't have data for a specific day, then the label for that day won't get generated.
For example, if I were to use a custom value formatter that looked like this:
public class CustomChartFormatter: NSObject, IAxisValueFormatter {
var days: = ["S", "M", "T", "W", "T", "F", "S"]
public func stringForValue(value: Double, axis: AxisBase?) -> String {
return days[Int(value)]
}
}
and my backing data looked like this: [(0, 15.5), (1, 20.1), (6, 11.1)] where 0, 1, and 6 are representations of days, and 15.5, 20.1, and 11.1 are the data points on those days, then when stringForValue is called, some of the days will never get labels generated for them.
Since value is always based on that backing data, it will never be equal to 2, 3, 4, or 5 in this scenario. As such, labels for "T", "W", "T", and "F" are never generated.
Does anyone know how to force the library to generate 7 labels, one for each day of the week, regardless of what my backing data is? Thank you kindly.
Ok so thanks to #wingzero 's comment, I have been able to get this working. There are a few things required to do so. For simplicity's sake, I am going to explain how to get the "days of the week" labels working as I originally asked. If you follow these steps, however, you should be able to tweak them to format your chart however you like (for example, with months of the year).
1) Make sure that your chart's x-axis minimum and maximum values are set. In this case, you'd want to say: chartView.xAxis.axisMinimum = 0.0 and chartView.axisMaximum = 6.0. This is important for step 2.
2) As Wingzero alluded to, create a subclass of XAxisRenderer that allows us to grab the minimum and maximum values set in step one and determine what values should be passed to our IAxisValueFormatter subclass in step three. In this case:
class XAxisWeekRenderer: XAxisRenderer {
override func computeAxis(min: Double, max: Double, inverted: Bool) {
axis?.entries = [0, 1, 2, 3, 4, 5, 6]
}
}
Make sure to pass this renderer to your chart like this: chartView.xAxisRenderer = XAxisWeekRenderer()
3) Create a subclass of IAxisValueFormatter that takes the values we passed to the chart in step two ([0, 1, 2, 3, 4, 5, 6]) and gets corresponding label names. This is what I did in my original question here. To recap:
public class CustomChartFormatter: NSObject, IAxisValueFormatter {
var days: = ["S", "M", "T", "W", "T", "F", "S"]
public func stringForValue(value: Double, axis: AxisBase?) -> String {
return days[Int(value)]
}
}
4) Set the labelCount on your graph to be equal to the number of labels you want. In this case, it would be 7. I show how to do this, along with the rest of the steps, below the last step here.
5) Force the labels to be enabled
6) Force granularity on the chart to be enabled and set granularity to 1. From what I understand, setting the granularity to 1 means that if the data your chart passes to stringForValue is not in round numbers, the chart will essentially round said data or treat it like it is rounded. This is important since if you passed in 0.5, it's possible that your stringForValue might not produce the right strings for your labels.
7) Set the value formatter on the xAxis to be the custom formatter you created in step 3.
Steps 4-7 (plus setting the formatter created in step 3) are shown below:
chartView.xAxis.labelCount = 7
chartView.xAxis.forceLabelsEnabled = true
chartView.xAxis.granularityEnabled = true
chartView.xAxis.granularity = 1
chartView.xAxis.valueFormatter = CustomChartFormatter()
First, have you debugged return days[Int(value)] on your side? From your screenshot, it seems obvious that your value after int cast looses the precision. e.g. 2.1 and 2.7 will be 2, which always shows you T. You have to look at your value first.
If you are sure you only get 7 xaxis labels all the time, a tricky way is to force computeAxisValues to have [0,1,2,3,4,5,6] all the time.
Meaning, you make sure your data x range is [1,7] (or [0,6]), and in #objc open func computeAxisValues(min: Double, max: Double), you should be able to see min is 1 and max is 7.
Then you override this method to set axis.entries = [Double]() to be [0,1,2,3,4,5,6], without any calculation. This should gives you the correct mapping.
However, before doing this, I suggest you take some time to debug this method first, to understand why you didn't get the expected values.
I have a series of sales records which are in an RDD like so,
case class salesRecord(startDate: Int, startTime: Int, itemNumber: Int)
val transactions: RDD[salesRecords]
each day is separated by a startDate and startTime which are the seconds since midnight. I need to be able to filter the start time between two bands which have been input by the user.
so imagine the user has input
val timeBandStart: Int //example 100
val timeBandEnd: Int // 5000
and they only want the records of each day between these bands, so to do this I've tried the following.
val timeFiltered = transactions.filter { record =>
record.startTime >= timeBandStart && record.startTime <= timeBandEnd
}
the issue i'm facing is that I get nothing on my output, I know for sure the records are within these time bands, so should appear on my output. To try and debug this I've tried extract what the timebands which i'm trying to filter on, with this.
val test = transactions.map( (record.startTime, timeBandStart, timeBandEnd)
My output of this is the following (32342, 0, 0), (32455, 0, 0).
Why are my timeBands not being set within the filter? I thought this could be something to with the variables not being broadcast to all of the nodes, so I tried placing the timebands with a broadcast variable. But that didn't work....
Probably something really stupid, can somebody point out what i'm doing wrong?
Cheers!
I've fixed my bug, it's related to this issue. https://issues.apache.org/jira/browse/SPARK-4170
I'm now not extending from App and instead using the main method. My filter is now being applied correctly.
Thanks for your help!