Financial messaging standards sit at the heart of virtually all economic activity, from executing the smallest retail transactions to managing massive global institutional businesses; they play a key role in enabling modern society to function effectively.
Since its genesis in the s, SWIFT has played an important role in standardisation, by creating and maintaining financial messaging standards and reference data standards. Use of standardised messages and reference data ensures that data exchanged between institutions is unambiguous and machine friendly, enabling efficient automation and so reducing industry costs and risk.
Financial institutions send structured electronic messages to one another to perform common business processes, such as making payments or confirming trades.
These standards specify the data elements that can be included in the messages, document the meaning and format of those data elements and specify which of the elements are mandatory, which are optional, and which are only required in specific business scenarios.
The standardised messages also describe the actions expected of the message receivers, and, because some business processes require several messages to be exchanged, they also specify the order in which messages should be sent and received.
The role of ISO is twofold: it is a methodology for creating financial messaging standards, and it is a related body of content which includes definitions of common industry terms, and message definitions addressing an expanding range of business areas, including payments, cash management, treasury, cards and securities. SWIFT Standards works with the user community to specify and publish market practice - rules and best-practice advice on how standards should be deployed to meet particular business needs or to comply with regulation.
RAs are appointed by the International Organisation for Standardisation ISO to ensure the integrity of the reference data defined by ISO standards, and to publish the data in an accessible form for the benefit of the user community. Financial messaging standards include these codes wherever possible to minimise the ambiguity of data.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. In Swift For Swift 2 rendition, see previous revision of this answer. Here's what I'm using:. I can't find it documented anywhere, but Apple truncate fractional seconds to the microsecond 3 digits of precision on both input and output even though specified using SSSSSSS, contrary to Unicode tr I should stress that this is probably not necessary for most use cases.
Dates online do not typically need millisecond precision, and when they do, it is often better to use a different data format. But sometimes one must interoperate with a pre-existing system in a particular way. In the future the format might need to be changed which could be a small head ache having date. Use a class and protocol to wrap the implementation, changing the date time format call in one place will be simpler.
Use RFC if possible, its a more complete representation. DateFormatProtocol and DateFormat is great for dependency injection. For backwards compatibility I used an old C-library. I hope this is useful for someone.
If you're targeting iOS To complement the version of Leo Dabus, I added support for projects written Swift and Objective-C, also added support for the optional milliseconds, probably isn't the best but you would get the point:. Learn more. Ask Question. Asked 5 years, 2 months ago. Active 22 days ago. Viewed k times. The goal is a string that looks like this: "T Best case: Swift source code that is simple, short, and straightforward.
No need to use any additional framework, subproject, cocoapod, C code, etc. I've searched StackOverflow, Google, Apple, etc. SSS'Z'" formatter. Rob k 60 60 gold badges silver badges bronze badges. Fattie And - how can it handle that last. Answer: Matt Longs stackoverflow.
I had no clue there were "options on a formatter", weird and wild! I'm looking for a solution that works on linux.
Active Oldest Votes. Leo Dabus Leo Dabus k 43 43 gold badges silver badges bronze badges. Just an note that this looses a bit of precision so it's important to make sure equality of dates is compared via the generated string and not timeInterval.
XCTAssertEqual now.Posted on September 22, by Steven Lipton. When you set an appointment in the calendar app there is a contr ol used for time measurements called the UIDat ePicker. While not one of the most popular controls, it is very handy for working with dates. We also will cover some of the important date-related methods and classes you should know when you works with dates and times.
Create a new project named SwiftDatePickerDemo from the single view template. On the storyboard set up like this:. Open the assistant editor. Close the assistant editor and go to the viewcontroller. UIDatePicker has a few properties you can set to control the behavior of the picker.
The picker will default to the current date and time, but we can set it. We can also set a minimum time on the picker. We will set if the date will show on the picker. Line 4 uses the datePickerMode property to set the mode to. Time We then get a new instance of a NSDatewhich is the current time. We set that time in the minimumDate property and the date property. Build and Run. When we set the date property, we did so as a NSDate Class.
What we would like to do is display the time on the label, but for that we need a String. Apparently one of the best kept secrets AKA poorly documeted in Xcode is how to do this.
There is a special class for this, NSDateFormatterwhich is not quite intuitive to use. To get a string of the date, you make a instance of NSDateFormatter ,then set the properties for the instance.Convert UTC date to local timezone date - swift 4 + ios sdk
You use the instance method stringFromDate to return a string from a date. The reason for all this is localization. Line 3 creates a date formatter.
Both date and time are in a date, so we need to set how we want to show the date and time. In line 5 and 6 we set this for the time and date. In line 11, we use the stringFromDate method to return a string and directly send it to the label. Generally if there is one date on something, there is more than one date or time. Consider this scene from Interval RunCalcan App I wrote for calculating pace and distance given running intervals.
There are four times here: two in each table cell, one in the header and one in the footer. This is the common case, and having a date formatter around actually speeds up the process, since you set the style only once and then use the same stringfromDate for all the occurrences.
The T in the middle of it really throws off what I am used to when working with dates. Just your passing your dateformate and your date then you get Year,month,day,hour. Extra info. Please use an ISO parsing library for doing this.
There are too many ways how the string could be encoded. Don't rely on a specific format and don't rely on the server sending always the same.
The problems start with the 'Z' at the end and it will extend through all varieties of the standard. A parsing library will handle all cases and will always provide a safe conversion - whereas a fixed formatting string is likely to fail in the future.
With regards to the question: You can pull out the date components from the date using NSDateComponents. The example on the website covers exactly your case. Please be aware, that converting your date will take into account the time zone. You might want to set the 'locale' of the NSCalendar explicitly. Learn more. Convert string to date in Swift Ask Question. Asked 3 years, 11 months ago. Active 1 month ago.
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Hawken Rives 1, 18 18 silver badges 25 25 bronze badges. You want just Yearmonthdayhour right? Active Oldest Votes. Sneha If you don't want the hour just omit. Try the following date Format. Swift 4. Sunil Targe 6, 5 5 gold badges 37 37 silver badges 64 64 bronze badges. Balaji Ramakrishnan Balaji Ramakrishnan 1, 8 8 silver badges 17 17 bronze badges. Tried it, and date return nil after this. In Swift 4. Spipau Spipau 3, 1 1 gold badge 28 28 silver badges 40 40 bronze badges.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. You have to declare 2 different NSDateFormattersthe first to convert the string to a NSDate and the second to print the date in your format.
How To Format Date Time In Swift
Try this code:. This may be useful for who want to use dateformater. This is also helpful when you want to localize your App. See also the Apple Documentation. Swift 3 version with the new Date object instead NSDate :.
EDIT: after mitul-nakum suggestion. SSS'Z' e. Pass date and format as whatever way you want. Learn more. Date Format in Swift Ask Question. Asked 4 years, 1 month ago. Active today. Viewed k times. How will I convert this datetime from the date? Jack 9, 4 4 gold badges 50 50 silver badges 78 78 bronze badges. Sydney Loteria Sydney Loteria 5, 12 12 gold badges 41 41 silver badges 64 64 bronze badges.
Active Oldest Votes. LorenzOliveto LorenzOliveto 5, 1 1 gold badge 13 13 silver badges 37 37 bronze badges.
Swiftly getting a human-readable date with NSDateFormatter
What happens if the dateFormatterGet dateFormat needs to accept 2 different formats - one containing milliseconds and one without milliseconds? I think you have to declare two different DateFormatters to get the date: if the first one fails it will return niluse the second. I am getting this format in a JSON. I am not sure wether this is valid string, can you please help me. BatyrCan BatyrCan 2, 2 2 gold badges 8 8 silver badges 19 19 bronze badges. Your answer has been so illuminating and fixed my issue.
Thank you. Jonas Deichelmann Jonas Deichelmann 1, 15 15 silver badges 23 23 bronze badges. If you want to localize your app, just use Locale. Swift - 5. Jonathan Cravotta Jonathan Cravotta 1 1 silver badge 2 2 bronze badges. Swift 4, 4. Akbar Khan Akbar Khan 8 8 silver badges 12 12 bronze badges. This is a good, short solution with just a single DateFormatter! Something to be aware of: The DateFormatter also takes the application region set in the scheme into account!Posted on November 14, by Steven Lipton.
Working with dates in iOS10 can be a bit confusing. There are several different types associated with dates. You can use them for telling time, scheduling time and setting the differences between two times. You can download here the full lesson as a zip file if you wish, or just type along. The file has the entire lesson, so if you load it on iPad Playgrounds, it will format like this post.
The simplest date representation is from the type Date. For the current date, instantiate a variable with the constructor like this:. On the other hand, you might want a measure of time. For this, use the type TimeInterval.
They are of Double type. You can set a date based on the time interval. If you want a time interval different from now, use the constructor Date timeIntervalSinceNow:. If you want a date where you add or subtract a time interval, use Date timeInterval:since:. The date looks ugly. Start with initializing a date formatter. Date formatters need you to set a style for the date using the dateStyle property and time property timeStyle.
You have a choice of. Change the styles to. If you want only a date or a time, use. Prints just the time AM Date formatters are locale dependent. They use the current locale by default. For example If I want the time for some where with really authentic pizza. This is good for relative dates from a time frame.
What if you want an absolute date? A date component provides a way to add components for a date. Initialize DateComponents like this:.You should be aware that using a custom dateFormat comes with a risk of falling into some fallacies. Especially, you need to realize that the user can use different Localesand that date formats are different for different locales, regions and user settings. For example one date formatted with a dateFormat that fits the US might become confusing for anyone in Europe.
Apple already has a dedicated paragraph in their documentation about best practices for formatting a date to present to the user in a locale-aware way.
Below is just the TL;DR. The main recommendation to follow is to prefer using dateStyle and timeStyle over dateFormat. This is because those are locale-aware and account for a lot of edge cases that you can otherwise miss when using a custom and hardcoded dateFormat. I would even advise you to convince your designer against using a custom format and explain them that Date and Time is a tricky subject with lots of edge cases and that it's generally not worth using a custom format that might fit their assumptions about the locale and region they're used to use but might not fit a lot of other's.
If you still need to use a custom dateFormatbe sure that you use dateFormatter. Apple Documentation also has a dedicated section about those cases here. This class is dedicated to handle the ISO standard and all its possible variants and edge cases better than using a custom dateFormat would. Tip: One of the little-known options of ISODateFormatter is that it is also able to handle fractional seconds if you set it up using formatter.
For more information about those commonly overlooked cases, you can read Apple's TN It uses the Vapor web application framework and deployed is to Heroku. The site is open sourceso if you want to fix a bug or submit an enhancement, feel free to submit a pull request.
You can find Ben on Twitter or his blog. Want to see how to use DateFormatter in Swift? Parsing and Formatting Dates. Date Input ISO format. Format String. Characters Example Description Year y Year, no padding yy 08 Year, two digits padding with a zero if necessary yyyy Year, minimum of four digits padding with zeros if necessary Quarter Q 4 The quarter of the year.
Use QQ if you want zero padding. A single M will use '1' for January. MM 12 The numeric month of the year. A double M will use '01' for January. A single d will use 1 for January 1st.
A double d will use 01 for January 1st. HH 16 The hour hour padding with a zero if there is only 1 digit. Second s 8 The seconds, with no padding for zeroes. SSS The milliseconds. Falls back to GMT hour offset if the name is not known.