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Max length UITextField
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With Swift 5 and iOS 12, try the following implementation of textField(_:shouldChangeCharactersIn:replacementString:) method that is part of the UITextFieldDelegate protocol:
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementStri...
Set element focus in angular way
After looking for examples of how set focus elements with angular, I saw that most of them use some variable to watch for then set focus, and most of them use one different variable for each field they want to set focus. In a form, with a lot of fields, that implies in a lot of different variables.
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Are list-comprehensions and functional functions faster than “for loops”?
...re rough guidelines and educated guesses based on experience. You should timeit or profile your concrete use case to get hard numbers, and those numbers may occasionally disagree with the below.
A list comprehension is usually a tiny bit faster than the precisely equivalent for loop (that actually ...
What is the default height of UITableViewCell?
... @antony: view.bounds.size.height
– samvermette
Nov 4 '10 at 9:51
4
@MikeyWard: You pr...
Shell script while read line loop stops after the first line
... is to loop thru each line of the target file (whose path is the input parameter to the script) and do work against each line. Now, it seems only work with the very first line in the target file and stops after that line got processed. Is there anything wrong with my script?
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“rm -rf” equivalent for Windows?
...h is aliased to del, erase, rd, ri, rm and rmdir) and takes a -Recurse argument that can be shorted to -r
rd -r "path"
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400 vs 422 response to POST of data
... now seem to be the best HTTP/1.1 status code for your use case.
At the time of your question (and my original answer), RFC 7231 was not a thing; at which point I objected to 400 Bad Request because RFC 2616 said (with emphasis mine):
The request could not be understood by the server due to mal...
support FragmentPagerAdapter holds reference to old fragments
...a problem because you are instantiating and keeping references to your fragments outside of PagerAdapter.getItem, and are trying to use those references independently of the ViewPager. As Seraph says, you do have guarantees that a fragment has been instantiated/added in a ViewPager at a particular t...
Simple state machine example in C#?
...types of state transitions (Begin Command, End Command, Pause Command, Resume Command, Exit Command).
You can convert this to C# in a handful of ways, such as performing a switch statement on the current state and command, or looking up transitions in a transition table. For this simple state mach...