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The following code allows to create a font with different weights.
func makeFont(weight: CGFloat, size: CGFloat) -> UIFont {
var attributesDict = [String: Any]()
attributesDict["Weight"] = weight
/* Rubik-Light - is a variable font */
let fontDescriptor = UIFontDescriptor(
fontAttributes: [
UIFontDescriptor.AttributeName.name : "Rubik-Light",
kCTFontVariationAttribute as UIFontDescriptor.AttributeName : attributesDict
]
)
return UIFont(descriptor: fontDescriptor, size: size)
}
It works fine on ios 13 and below, but doesn't work on iOS 14. Is there any solution?
Solved.
iOS 14 expects attribute ID instead of its name ("Weight").
So, attributeDict should look like this:
var attributesDict = [NSNumber: Any]()
attributesDict[NSNumber(value: 2003265652)] = weight
Attribute ID can be obtained as follows:
let variationAxes = (CTFontCopyVariationAxes(ctFont)! as Array)
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How can I check if the string is base64 encoded in swift?
Input = "tNC6umcfBS/gelbo2VJF3i4LAhUKMp4oDHWN5KyYUTWeJIQKKYx6oAcQnGncIrPJNC1tUYMKV4kJQj3q9voIOrxc1n7FmRFvDXeRgWGNcGYO66dH3VjoEgF0oxZOpfzwSZKSv3Jm7Q=="
let base64Regex = "^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$"
let predicate = NSPredicate(format: "SELF MATCHES %#", base64Regex)
let result = predicate.evaluate(with: "InputString")
You can also try to decode using the built-in Data:
let inputString = "..."
let isBase64Encoded = Data(base64Encoded: inputString) != nil
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what is wrong with xcode? Get nil for key 9.0
#IBAction func sliderAction(_ sender: UISlider) {
speed = round(sender.value / step) * step
sender.value = speed
speedLabel.text = modeDict[sender.value]
print(sender.value)
print(speedLabel.text)
}
let modeDict : [Float : String] = [ 0.8 : "Pls delete game, you noob", 0.9 : "Pff, girl", 1.0 : "Optimal", 1.1 : "Very Hard", 1.2 : "Almost Unreal"]
let step : Float = 0.1
var speed : Float = 0.0
//
Print so, why 9.0 -> nil ?
0.8
Optional("Pls delete game, you noob")
0.9
nil
1.0
Optional("Optimal")
1.1
Optional("Very Hard")
1.2
Optional("Almost Unreal")
It's better to shift keys by 10
let modeDict : [Float : String] = [ 8 : "Pls delete game, you noob", 9 : "Pff, girl", 10 : "Optimal", 11 : "Very Hard", 12 : "Almost Unreal"]
and use
speedLabel.text = modeDict[sender.value*10]
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I have the following object:
(rates)
{
EUR: "1"
RON: 4.5
USD: 1.3
.
.
.
n: INT/STRING
}
Is there any function that does this?
if you care about the index, you can use a 'traditional' for loop - although #Eric points out this will soon be completely removed
for var i = 0; i < rates.count; i++
{
let rate = rates[i]
// do stuff with rate
}
The enumerate approach looks like this
for (index, rate) in rates.enumerate()
{
print("Do stuff with \(rate) at position \(index)")
}
if you just need each object in turn it's a bit easier
for rate in rates
{
// do stuff with rate
}
Because it's a dictionary, no enumerate() required:
var aDictionary: [String: Float] = ["EUR": 1, "RON": 4.5,
"USD": 1.3]
for (index,item) in aDictionary{
print(index,item)
}
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I would like to validate an email textfield, to make sure that the only email it accepts ends only by (.edu) (ex: example#uwf.edu or example.students#uwf.edu). Anything else like (.com)(.co)(.net) or so are not acceptable.
Try this (Swift 2.0):
func endsWithEdu(str : String) -> Bool {
let regex = try! NSRegularExpression(pattern: "\\.edu$", options: [.CaseInsensitive])
return regex.numberOfMatchesInString(str, options: [], range: NSMakeRange(0, str.characters.count)) > 0
}
print(endsWithEdu("john#university.edu")) // true
print(endsWithEdu("john#university.com")) // false
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In swift ,I need to show “10月02日”**but not **"10月2日",how to transfer "2"to "02"?
Now ， i have wrote these codes,but it will show "2",but not "02":
var publishLastDate:NSDate = momentLast.created_on
println(publishLastDate)
componentsLast = NSCalendar.currentCalendar().components(NSCalendarUnit.CalendarUnitDay | NSCalendarUnit.CalendarUnitMonth | NSCalendarUnit.CalendarUnitYear, fromDate: publishLastDate)
lastDay = componentsLast.day
lastMonth = componentsLast.month
lastYear = componentsLast.year
It looks like you're grabbing the components and printing the string yourself. You can format it like so:
let string = String(format: "%02d月%02d日", lastMonth, lastDay)