I'm using scala version 2.10.4 and it appears that a collection.mutable.Queue inside a Map isn't mutable. However a tuple of key to collection.mutable.Queue does appear to be mutable.
scala> scala.util.Properties.scalaPropOrEmpty("version.number")
res0: String = 2.10.4
scala> import scala.collection.mutable.{ Queue => MutableQueue }
import scala.collection.mutable.{Queue=>MutableQueue}
scala> (1 to 50).groupBy(_ % 5).mapValues(nums => MutableQueue(nums:_*))
res1: scala.collection.immutable.Map[Int,scala.collection.mutable.Queue[Int]] = Map(0 -> Queue(5, 10, 15, 20, 25, 30, 35, 40, 45, 50), 1 -> Queue(1, 6, 11, 16, 21, 26, 31, 36, 41, 46), 2 -> Queue(2, 7, 12, 17, 22, 27, 32, 37, 42, 47), 3 -> Queue(3, 8, 13, 18, 23, 28, 33, 38, 43, 48), 4 -> Queue(4, 9, 14, 19, 24, 29, 34, 39, 44, 49))
scala> res1(0).dequeue
res2: Int = 5
scala> res1(0)
res3: scala.collection.mutable.Queue[Int] = Queue(5, 10, 15, 20, 25, 30, 35, 40, 45, 50)
scala> (1 to 50).groupBy(_ % 5).mapValues(nums => MutableQueue(nums:_*)).toSeq
res4: Seq[(Int, scala.collection.mutable.Queue[Int])] = ArrayBuffer((0,Queue(5, 10, 15, 20, 25, 30, 35, 40, 45, 50)), (1,Queue(1, 6, 11, 16, 21, 26, 31, 36, 41, 46)), (2,Queue(2, 7, 12, 17, 22, 27, 32, 37, 42, 47)), (3,Queue(3, 8, 13, 18, 23, 28, 33, 38, 43, 48)), (4,Queue(4, 9, 14, 19, 24, 29, 34, 39, 44, 49)))
scala> res4.find(_._1 == 0).get._2.dequeue
res5: Int = 5
scala> res4.find(_._1 == 0).get._2
res6: scala.collection.mutable.Queue[Int] = Queue(10, 15, 20, 25, 30, 35, 40, 45, 50)
I would expect that res1(0) should reflect the dequeue.
This is because mapValues returns a view, so a new mutable Queue is being created every time you access res1.
You can fix this by using a strict map.
scala> (1 to 50).groupBy(_ % 5).map { case (_, nums) => MutableQueue(nums:_*) }.toList
res20: List[scala.collection.mutable.Queue[Int]] = List(Queue(5, 10, 15, 20, 25, 30, 35, 40, 45, 50), Queue(1, 6, 11, 16, 21, 26, 31, 36, 41, 46), Queue(2, 7, 12, 17, 22, 27, 32, 37, 42, 47), Queue(3, 8, 13, 18, 23, 28, 33, 38, 43, 48), Queue(4, 9, 14, 19, 24, 29, 34, 39, 44, 49))
scala> res20(0).dequeue
res21: Int = 5
scala> res20(0)
res22: scala.collection.mutable.Queue[Int] = Queue(10, 15, 20, 25, 30, 35, 40, 45, 50)
Related
I have the weekly avg from last 5 years, last year, and the year to date.
I would like to show them in a line graph, but showing the respective months in the xaxis...
for example and based on this year:
January has 4 weeks, so xaxis shows jan and there are 4 marks in the chart representing weeks 1,2,3 and 4;
February also has 4 weeks, so xaxis shows feb and there are 3 marks in the chart representing week 5,6,7 and 8;
and so on;
i'm using:
VueJs: 2.6.10
Echarts: 4.9.0
here is my code:
// var motnhNames = [
// 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
// 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'
// ]
var monthNames = [
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52
]
var options = {
title: {
text: 'My data'
},
tooltip: {
trigger: 'axis'
},
legend: {
data: ['5 Years', 'Last Year', 'YTD']
},
toolbox: {
show: true,
feature: {
dataZoom: {
yAxisIndex: 'none'
},
dataView: {
readOnly: false
},
magicType: {
type: ['line', 'bar']
},
restore: {},
saveAsImage: {}
}
},
xAxis: {
type: 'category',
boundaryGap: false,
data: monthNames
},
yAxis: {
type: 'value',
},
series: [{
name: '5 Years',
type: 'line',
data: [
19, 46, 34, 33, 16, 3, 6, 33, 20,
25, 5, 29, 48, 36, 1, 28, 48, 1,
34, 22, 50, 38, 11, 11, 37, 11, 28,
15, 14, 5, 7, 2, 46, 3, 12, 10,
20, 50, 39, 17, 50, 7, 27, 6, 5,
11, 35, 25, 50, 18, 40, 30, 35
],
lineStyle: {
type: 'dashed',
width: 5
}
},
{
name: 'Last Year',
type: 'line',
data: [
17, 48, 30, 6, 29, 27, 8, 50, 28,
34, 38, 48, 28, 41, 24, 27, 15, 17,
13, 50, 9, 15, 18, 41, 43, 49, 19,
1, 22, 20, 27, 1, 18, 26, 48, 17,
25, 38, 1, 29, 28, 1, 42, 21, 7,
8, 6, 6, 47, 50, 6, 46, 41
],
lineStyle: {
type: 'dotted',
width: 5
}
},
{
name: 'YTD',
type: 'line',
data: [
17, 48, 30, 6, 29, 27, 8, 50, 28,
34, 38, 48, 28, 41, 24, 27, 15, 17,
13, 50, 9, 15, 18, 41, 43, 49, 19,
1, 22, 20, 27, 1, 18, 26, 48, 17,
25, 38, 1, 29, 28, 1, 42, 21, 7,
8, 6, 6, 47, 50, 6, 46
],
lineStyle: {
type: 'solid',
width: 5
}
}
]
};
thanks in advance
[UPDATE 1]
I added a function that translate the week number to the respective month:
getDateOfWeek(week: number, year: number): string {
let date = (1 + (week - 1) * 7);
let dateOfYear = new Date(year, 0, date)
let month = dateOfYear.toLocaleString('pt-BR', { month: 'short' });
month = month.charAt(0).toUpperCase() + month.slice(1).replace('.', '')
return month;
}
also added a axisLabel:
options: {
...,
axisLabel: {
formatter: (param: number) => {
return this.getDateOfWeek(param, 2021)
},
},
...,
}
Now i have the month name on xaxis as expected... Only need to suppress duplicated names or maybe define a limit for 12 ticks.
I've tried to use xaxis.splitNumber property, but as the docs says, it is not allowed for category axis...
I was wondering, if i could change the week number to a date object, like:
firstWeek = '2021-01-01'
secondWeek = '2021-01-08'
should i change it to time series and work with real dates on X Axis?
not sure if it would solve the problem or bring another :|
here is the result so far:
Solved adding a new xaxis layer and hide the first one...
xAxis: [
{
type: "category",
boundaryGap: false,
data: this.generateData(false, 51),
axisLabel: {
formatter: (param) => {
return this.getMonthFromWeek(param, 2021);
}
},
show: false
},
{
position: "bottom",
type: "category",
data: [
"Jan",
"Fev",
"Mar",
"Abr",
"Mai",
"Jun",
"Jul",
"Ago",
"Set",
"Out",
"Nov",
"Dez"
],
xAxisIndex: 2
}
],
here is sandbox code result!
I want to display a large output of an ipython command line-by-line on the screen, instead of in a column. Now I have:
In [9]: range(25)
Out[9]:
[0,
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15,
16,
17,
18,
19,
20,
21,
22,
23,
24]
I want to have like in python terminal:
>>> range(25)
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24]
This question already has answers here:
Split list into multiple lists with fixed number of elements
(5 answers)
Closed 5 years ago.
Just to say I have a list with 100 elements. I would like to extract lists with length = 5(i.e., there will be 20 extracted lists, which is element 0-4, 5-9, ... ). Is there any elegant way to do this?
you need to group by how many elemes you want in each chunk
scala> (0 to 99).toList.grouped(5).toList
res5: List[List[Int]] = List(List(0, 1, 2, 3, 4), List(5, 6, 7, 8, 9), List(10, 11, 12, 13, 14), List(15, 16, 17, 18, 19), List(20, 21, 22, 23, 24), List(25, 26, 27, 28, 29), List(30, 31, 32, 33, 34), List(35, 36, 37, 38, 39), List(40, 41, 42, 43, 44), List(45, 46, 47, 48, 49), List(50, 51, 52, 53, 54), List(55, 56, 57, 58, 59), List(60, 61, 62, 63, 64), List(65, 66, 67, 68, 69), List(70, 71, 72, 73, 74), List(75, 76, 77, 78, 79), List(80, 81, 82, 83, 84), List(85, 86, 87, 88, 89), List(90, 91, 92, 93, 94), List(95, 96, 97, 98, 99))
see - Split list into multiple lists with fixed number of elements
I am getting these errors and i dont even know why
1: Type view controller does not conform with UIViewPickerDataSource
2: method pickerview(pickerView:numberOfRowsInComponent:) has different argument names from those required
Here is my code!
Any help will be appreciated. Thanks
import UIKit
class ViewController: UIViewController,UIPickerViewDataSource,UIPickerViewDelegate {
#IBOutlet weak var timePicker: UIPickerView!
var timePickerData:[[Int]] = [[Int]]()
override func viewDidLoad()
{
super.viewDidLoad()
self.timePicker.delegate = self
self.timePicker.dataSource = self
timePickerData = [[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,52, 53, 54, 55, 56, 57, 58, 59], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,52, 53, 54, 55, 56, 57, 58, 59]]
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int
{
return timePickerData.count
}
// The number of rows of data
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int
{
return timePickerData[component].count
}
// The data to return for the row and component (column) that's being passed in
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> Int?
{
return timePickerData[component][row]
}
}
It seems like you are using XCode 8, but your code uses old Swift 2.2 UIPickerView API. My suggestion for correction:
class ViewController: UIViewController,UIPickerViewDataSource,UIPickerViewDelegate {
#IBOutlet weak var timePicker: UIPickerView!
var timePickerData:[[Int]] = [[Int]]()
override func viewDidLoad()
{
super.viewDidLoad()
self.timePicker.delegate = self
self.timePicker.dataSource = self
timePickerData = [[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,52, 53, 54, 55, 56, 57, 58, 59], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,52, 53, 54, 55, 56, 57, 58, 59]]
}
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return timePickerData.count
}
// The number of rows of data
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int
{
return timePickerData[component].count
}
// The data to return for the row and component (column) that's being passed in
private func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> Int?
{
return timePickerData[component][row]
}
}
If there's a quick fix for this, apologies in advance. In the IPython shell, if I have this:
In [1]: x = [i for i in range(100)]
then I get a list printed with each element on a new line if I call it:
In [2]: x
Out[2]: [0
1,
2,
and so on down to 100. Irritating as hell because often I'm calling objects and don't know how long they'll be (and don't want to check beforehand, and don't want my last commands to get pushed up and out of the way). How can I get it to print that result the way it would in regular python? I.e.:
>>> x
[1,2,3,4,5,6,7,8,....
9,10,11, ..... 100]
What you want is to disable pretty print.
$ ipython --help
[...]
--no-pprint
Disable auto auto pretty printing of results.
[...]
Which gives :
$ ipython --no-pprint
[...]
In [1]: x = [i for i in range(100)]
In [2]: x
Out[2]: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99]